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This document provides proprietary calibration and adjustment instructions for Access CT scanners, specifically for 0-Level operations. It includes safety guidelines, installation requirements, and detailed calibration procedures, emphasizing the need for trained personnel and adherence to legal and safety standards. The document is confidential and intended solely for authorized Philips Healthcare personnel and licensed customers.

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0% found this document useful (0 votes)

65 views85 pages

调试说明

Uploaded by

紫泰

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Access CT

Calibration and Adjustment

Instructions for 0-Level

459800863521
Revision C

This document and the information contained in it is proprietary and confidential information of Philips Healthcare ("Philips") and may not be
reproduced, copied in whole or in part, adapted, modified, disclosed to others, or disseminated without the prior written permission of the Philips
Legal Department. Use of this document and the information contained in it is strictly reserved for current Philips personnel and Philips customers
who have a current and valid license from Philips for use by the customer’s designated in-house service employee on equipment located at the
customer’s designated site. Use of this document by unauthorized persons is strictly prohibited. Report violation of these requirements to the
Philips Legal Department. This document must be returned to Philips when the user is no longer licensed and in any event upon Philips’ first
written request.
This document and the information contained in it is strictly reserved for current Philips Healthcare (“Philips”) personnel, Philips licensed
representatives and Philips customers who have purchased a valid service agreement for use by the customer’s designated in-house service
employee on equipment located at the customer’s designated site. Use of this document by unauthorized persons is strictly prohibited. This
document must be returned to Philips when the user is no longer licensed and in any event upon Philips’ first written request.

© 2015 Koninklijke Philips N.V. All Rights Reserved. CSIP Level 0

Access CT Calibration and Adjustment Instructions for 0‐Level

Safety and Legal Information

To the User of This Manual
The user of this manual is directed to read and carefully review the instructions, warnings and cautions contained herein
prior to beginning installation or service activities. While you may have previously installed or serviced equipment similar
to that described in this manual, changes in design, manufacture or procedure may have occurred which significantly
affect the present installation or service.

Legal Manufacturer
Philips Medical Systems (Cleveland), Inc.
A Philips Healthcare Company
595 Miner Road
Cleveland, OH 44143
USA

Warranty Disclaimer
Philips provides this document without warranty of any kind, implied or expressed, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose.

Limitation of Liability
Philips has taken care to ensure the accuracy of this document. However, Philips assumes no liability for errors or
omissions and reserves the right to make changes without further notice to any products herein to improve reliability,
function, or design. Philips may make improvements or changes in the product(s) or program(s) described in this
document at any time.

Password Notice
The PASSWORD is the property of Philips Healthcare and is provided for the exclusive purpose of providing access to
selected service utilities which are described in this service manual as being associated with the password. Use of this
password for any purpose other than for the access to the selected services utilities is strictly prohibited.

Safety

WARNING: In addition to the warnings listed above, follow all safety guidelines as described in the
Safety Manual. Failure to do so can result in severe personal injury.

Installation and Environment

Except for installations requiring certification by the manufacturer, see that a radiation protection survey is made by a qualified expert
in accordance with NCRP 102, section 7, as revised. Perform a survey after every change in equipment, workload, or operating
conditions which might significantly increase the probability of persons receiving more than the maximum permissible dose
equivalent.

Diagnostic Imaging Systems - Mechanical-electrical Warning

WARNING: Before initiating a movement of the patient table or gantry, ensure that the area is free of
obstructions such as tools, boxes, chairs, and step stools. Physical injury or damage can
occur.
All of the moveable assemblies and parts of this equipment should be operated with care and routinely inspected in accordance with
the manufacturer’s recommendations contained in the equipment manuals.
Only properly trained and qualified personnel should be permitted access to any internal parts. Live electrical terminals are deadly; be
sure line disconnects are opened and other appropriate precautions are taken before opening access doors, removing enclosure
panels, or attaching accessories.

Do not under any circumstances remove the flexible high tension cables from the x‐ray tube housing or high tension generator and/or
the access covers from the generator until the main and auxiliary power supplies have been disconnected. Failure to comply with the
above may result in serious or fatal bodily injuries to the operator or those in the area.

Prior to any service and maintenance activities inside components:

• Switch off the system at the main power supply, and the uninterruptible power supply (UPS).
• Make sure that no other person can switch on power or switch off any safety measures, when installation, maintenance or service
work on the system is performed.
• Always use an ESD protection wrist strap when servicing any component in the system.

Electrical-grounding Instructions
The equipment must be grounded to an earth ground by a separate conductor. The neutral side of the line is not to be considered the
earth ground. On equipment provided with a line cord, the equipment must be connected to a properly grounded, three‐pin
receptacle. Do not use a three‐to‐two pin adapter.

Diagnostic Imaging Systems - Radiation Warning

X‐ray and Gamma‐rays are dangerous to both operator and others in the vicinity unless established safe exposure procedures are
strictly observed.

The useful and scattered beams can produce serious or fatal bodily injuries to any persons in the surrounding area if used by an
unskilled operator. Adequate precautions must always be taken to avoid exposure to the useful beam, as well as to leakage radiation
from within the source housing or to scattered radiation resulting from the passage of radiation through matter.

Those authorized to operate, participate in or supervise the operation of the equipment must be thoroughly familiar and comply
completely with the current established safe exposure factors and procedures described in publications, such as: Subchapter J of Title
21 of the Code of Federal Regulations, ʺDiagnostic X‐ray Systems and Their Major Componentsʺ, and the national council on radiation
protection (NCRP) no. 102, ʺMedical X‐ray And Gamma‐ray Protection For Energies Up To 10 Mev‐equipment Design and Useʺ.

Those responsible for planning of x‐ray and gamma‐ray equipment installations must be thoroughly familiar and comply completely
with NCRP no. 49, ʺStructural Shielding Design and Evaluation for Medical of X‐rays and Gamma‐rays of Energies Up to 10 Mevʺ.
Failure to observe these warnings may cause serious or fatal bodily injuries to the operator or those in the area.

Symbol Descriptions

Warning symbol Radiation warning symbol

Laser warning symbol Biohazard warning symbol

Magnetism warning symbol Projectile warning symbol

Electrical warning symbol Do not touch

Recycle Label
Dispose of in accordance with your country’s
requirements. This label indicates that there is
Crush warning symbol material in the system that you must separately
collect and recycle in accordance with the
requirements of the European Waste Electrical
Equipment (WEEE) Directive.

ECO # Revision Date Comments

E‐056163 A May 2015 New Release
Updated the section including the following chapters:
A‐Plane Pre‐adjustment on page 33
E‐056831 B May 2015 HCOR Calibration on page 65
Vertical Moveable Patient Table Vertical Adjustment on
page 75

459800863521 Revision C CSIP Level 0 WARNING: THIS PAGE CONTAINS COPYRIGHTED MATERIALS THAT ARE CONFIDENTIAL AND OR PROPRIETARY. ANY RELEASE OR DISTRIBUTION OF THIS MATERIAL, WITHOUT PERMISSION, IS A VIOLATION OF LAW. 6
ECO # Revision Date Comments
Updated the following section of Software Calibration:
• Added the note information about calibration process
for 0‐level users of Note: on page 16.
• Added the descriptions of the rotor balancing positions
in theFigure 8 on page 21 ;
• Added the Note: on page 22 about rotor balancing kit;
• Updated the figure with warning symbol of Figure 27 on
page 36 ;
• Updated the instructions in the section of A‐Plane Pre‐
adjustment on page 33;
• Updated the instructions in the section ofTube
Mechanical Alignment on page 40;
E‐064470 C November 2015
• The figure with warning symbol of Figure 81 on page 66;
• Updated the instructions and figures in the section
ofVertical Moveable Patient Table Vertical Adjustment
on page 73;
• Updated the figure for the Horizontal Motion Control
Switch for Vertical Moveable Patient Table on page 76;
• Updated the figure and description for theHorizontal
Motion Control Switch for Fixed Patient Table on page
78;
• Updated the parameter information inTable 1 on
page 81;
• Deleted the section of Adjusting HV Setting.

This document was prepared by CT/AMI Service Innovations.

For any additions, corrections, or suggestions, contact your next level of support.

Contents
Section 1 Calibration Manual Overview: ............................................................ 11
1.0.1 CT Terms ........................................................................................................12

Section 2 Software Calibrations: ....................................................................... 13

2.1 Safety Overview Before Starting Calibrations.................................................................13
2.2 Auto-Calibration ........................................................................................................15
2.2.1 Estimated Time................................................................................................15
2.2.2 Auto-Calibration Procedure ................................................................................15
2.3 Phantom Holder ........................................................................................................16
2.3.1 Overview ........................................................................................................16
2.3.2 Configuration and Function................................................................................17
2.3.3 Initial Parameters Setting..................................................................................18
2.4 Registering a New Tube..............................................................................................19
2.4.1 Estimated Time................................................................................................19
2.4.2 Register New Tube Procedure ............................................................................19
2.5 Rotor Balancing.........................................................................................................21
2.5.1 Estimated Time................................................................................................21
2.5.2 Overview ........................................................................................................21
2.5.3 Rotor Balancing Calibration Procedure.................................................................22
2.6 Filament Pre-adjustment ............................................................................................29
2.6.1 Estimated Time................................................................................................29
2.6.2 Overview ........................................................................................................29
2.6.3 Pre-adjustment Calibration Procedure .................................................................29
2.7 Tube Conditioning .....................................................................................................31
2.7.1 Estimated Time................................................................................................31
2.7.2 Overview ........................................................................................................31
2.7.3 Tube Conditioning Procedure .............................................................................31
2.8 Filament Calibration...................................................................................................32

Contents
2.8.1 Estimated Time................................................................................................32
2.8.2 Overview ........................................................................................................32
2.8.3 Filament Calibration Procedure...........................................................................33
2.9 A-Plane Pre-adjustment .............................................................................................33
2.9.1 Estimated Time................................................................................................33
2.9.2 Tools Required.................................................................................................33
2.9.3 A-Plane Pre-adjustment Procedure .....................................................................35
2.10 Tube Mechanical Alignment .......................................................................................40
2.10.1 Estimated Time ..............................................................................................40
2.10.2 Tools Required ...............................................................................................40
2.10.3 Overview ......................................................................................................40
2.10.4 Tube Mechanical Alignment Procedure...............................................................42
2.11 A-Plane Calibration ..................................................................................................51
2.11.1 Estimated Time ..............................................................................................51
2.11.2 A-Plane Calibration Procedure ..........................................................................51
2.12 Nonlinearity Calibration ............................................................................................52
2.12.1 Estimated Time ..............................................................................................52
2.12.2 Nonlinearity Calibration Procedure ....................................................................52
2.13 Crosstalk Calibration ................................................................................................57
2.13.1 Estimated Time ..............................................................................................57
2.13.2 Crosstalk Calibration Procedure ........................................................................57
2.14 Beam Hardening Calibration ......................................................................................61
2.14.1 Estimated Time ..............................................................................................61
2.14.2 Beam Hardening Procedure..............................................................................61
2.15 HCOR Calibration .....................................................................................................65
2.15.1 Estimated Time ..............................................................................................65
2.15.2 HCOR Calibration Procedure.............................................................................65
2.16 Air Calibration .........................................................................................................69

Contents
2.16.1 Estimated Time ..............................................................................................69
2.16.2 Air Calibration Procedure .................................................................................69

Section 3 Hardware Calibrations: ...................................................................... 72

3.1 Hardware Calibration Reasons Matrix ...........................................................................72
3.2 Vertical Moveable Patient Table Vertical Adjustment .......................................................73
3.2.1 Tools Required.................................................................................................73
3.3 Vertical Moveable Patient Table Horizontal Adjustment ...................................................76
3.3.1 Horizontal Motion Control Switch for Vertical Moveable Patient Table .......................76
3.4 Fixed Patient Table Horizontal Adjustment ....................................................................78
3.4.1 Horizontal Motion Control Switch for Fixed Patient Table ........................................78
3.5 Adjusting Belt Tension ...............................................................................................80
3.5.1 Tools Required.................................................................................................80
3.5.2 Overview ........................................................................................................80
3.5.3 Parameter Setup..............................................................................................81
3.5.4 Measuring Belt Tension .....................................................................................82

Appendix A Calibration Phantoms: .................................................................... 85

Section 1 Calibration Manual Overview

This manual provides calibration procedures and methods for the Access CT Scanners.
It is divided into the following sections:
• Section 2 Software Calibrations on page 13
The calibration procedures are mostly automatic, but some require manual intervention on the part of
the service engineer. Follow the on‐screen instructions that guide you through the entire process.
Additionally, any of the calibrations can be run independently by manual selection. To run a
calibration manually, click Custom Calibration Process in the Select Process list.
During auto‐calibration it is necessary to change phantoms for different calibrations.
Refer to Appendix A Calibration Phantoms on page 85 for phantom description.
• Section 3 Hardware Calibrations on page 72
The specific calibration to be performed is determined by the system component replaced.
Calibrations and associated reasons are listed in the 3.1 Hardware Calibration Reasons Matrix on
page 72.

!
CAUTION The Phantoms used in calibration procedures must be filled with pure water and should not
contain any (or minimal) air bubbles. When positioning the phantom, make sure that any
trapped air bubble is behind the 'bubble catcher'.

!
CAUTION Collision hazard! when mounting the phantom make sure that it is positioned so that it will
not come in contact with the gantry covers or the Rotor.

1.0.1 CT Terms
Name Description

ADM Array Detector Module

DMS Data Measurement System

HCOR Hounsfield Unit Value Correct

PM Planed Maintenance

XRT X‐ray Tube

Section 2 Software Calibrations

2.1 Safety Overview Before Starting Calibrations

!
CAUTION: The 7 Inch Water Phantom used in the calibration procedures must be filled with pure water
and should not contain any (or minimal) air bubbles. When positioning the phantom, make
sure that any trapped air bubble is behind the 'bubble catcher' (see Figure 2).

!
CAUTION: The vertical adjustment for the vertical moveable couch should be carried out with the
phantom holder.

!
CAUTION: Collision hazard! Before carry out calibration, lift the vertical moveable couch to 340cm to
avoid collision with the Gantry.

!
CAUTION: Collision hazard! When mounting the phantom make sure that it is positioned so that it will
not come in contact with the gantry covers or the Rotor.

WARNING: Before the system enters the state of scanning, make sure that there are no personnel in the
scanner room.

!
CAUTION: If an error was reported as shown in Figure 1 on page 14 while performing a Calibration
process, restart the computer and perform the calibration again.

Figure 1: Disk Space Error on Calibration Process

2.2 Auto-Calibration
2.2.1 Estimated Time
• 280 Minutes (currently)

2.2.2 Auto-Calibration Procedure

1. Before starting the calibration procedure, perform Tube Warm Up, if the anode heat is less than 20%.

Note: Make sure the anode heat is more than 20%, otherwise the calibration process can not be performed normally.
2. Double click the Access CT icon on desktop, and log On as olevel_service.
3. From the main menu, click Service, select the Advanced Service tab.
4. From the Advanced menu, click Auto. Cali. to view the Calibration window (see Figure 2)
.

Figure 2: Main Calibration Interface

5. In the Calibration Process list, click the Calibration List; the applicable calibrations appear in the
window to the right.
6. Click Next to start running the selected calibration sequence in the prescribed order.

Note: If the calibration is interrupted and can not continue for any reason, the whole calibration have to be restarted from
the very beginning
7. Follow the on‐screen instructions to perform the calibration.

2.3 Phantom Holder

2.3.1 Overview
The following figure show the contents of the Access CT phantom holder.

Phantom Auxiliary Connection Part

Note: The Phantom Auxiliary

Connection Part used in the
Nonlinearity Calibration.

Figure 3: Phantom Holder

2.3.2 Configuration and Function

1 3

5
2

Figure 4: Side View

Figure 5: Front View

NO Name Note
1. Vertical Position Scale
2. Tilt Adjustment Screw
3. Horizontal Adjustment Screw
4. Vertical Adjustment Screw In Vertical
5. Phantom Auxiliary Connection Part Used In Nonlinearity Calibration
6. Holder Fixing Screw

2.3.3 Initial Parameters Setting

You need to set some phantom height manually firstly by Phantom Initial Mounting Position before carry
on some calibrations. The following table shows the detailed information about parameters setting.
Table 1: Initial Parameters Setting

Calibration Initial Height And Order Phantom And Others

Tube Mechanical Alignment ‐50mm 7 Inch Water Phantom With Pin

Step phantom and Phantom Auxiliary

Nonlinearity Calibration ‐150mm
Connection Plate

Crosstalk Calibration ‐50mm,‐105mm,‐165mm 7 Inch Water Phantom

Beam Hardening Calibration ‐190mm 7 Inch Water Phantom

HCOR Calibration 0mm 7 Inch Water Phantom

2.4 Registering a New Tube

2.4.1 Estimated Time
• 3 minutes

2.4.2 Register New Tube Procedure

1. In the main Calibration Process interface, check the option Register New Tube and click Next.

Figure 6: Register New Tube

2. Type in all the necessary information into the table as shown in (see Figure 7), and click OK.

Note: Values with an * are required.

3. Register New Tube Calibration Completed Successfully message appears.

Figure 7: Register New Tube

2.5 Rotor Balancing

!
CAUTION: Always perform the Rotor Balancing Calibration when instructed by the Software Calibration
Reasons Matrix on page 3. Do not select Skip.

2.5.1 Estimated Time

• 40 minutes

2.5.2 Overview
There are three balancing positions on the Gantry for adding or removing weights from Gantry( see
Figure 8 and Figure 9).

Position 1 Position 2

Position 3
Position 2 Position 1

Figure 8: Balancing Positions Figure 9: Balancing Positions

• There are three balance plate weights: 1kg, 0.5kg and 0.25kg.

Note: The Rotor Balance Kit can be ordered as FRU, if there is not enough balance plates in hospital.

Figure 10: Balance Plate Weights

2.5.3 Rotor Balancing Calibration Procedure

Note: Verify the following aspects before you start the procedure.
1. Verify the Manual Switch on Gantry left side is in Auto position (see Figure 11).
2. Verify the Gantry Cover Switch on Gantry left side is pulled out (see Figure 12).
3. Verify that all weights on Rotor are installed and secured: Use a torque of 40N.m to secure all weights.
4. Make sure you released the Rotor Locking Pin before rotating the Gantry (see Figure 13).

!
WARNING: Before you add or remove weights to the Rotor, make sure that the slipring cover is installed.

Figure 12: Pull out Gantry Cover Switch

Figure 11: Auto Position

Figure 13: Release The Rotor

WARNING: Before you add or remove weights to the Rotor, make sure that all power to the system on
the gantry right side is turned off, the QF 102 is switched off, the Rotor is locked.

1. In the main Calibration Process

interface, check the option Rotor
Balancing and click Next.
2. Make sure the Manual Switch is in
Auto position. Click Confirm to
start the Rotor Balancing
Calibration (see Figure 14).

Figure 14: Rotor Balancing Calibration

3. The Rotor starts to rotate, and the software calculates the changes to make in the weights and displays
the balancing instructions (see Figure 16) as well as the result plot (see Figure 15). This takes about 2
minutes.

Note: Figure 15 shows the result plot of a Rotor Balancing test that requires weight corrections.

Figure 15: Rotor Balancing Plot (not accepted)

Note: If Rotor Balancing Calibration is unsuccessful, perform the procedures as the following.

4. Work according to the Balance Scanning

Instructions:
• If weights cannot be added to one of the rotor
balance positions and must be ignored, type the
position number into the Rotor Balance Position
to text box to ignore this position and then click
Recalculate to calculate again.
• If there is no balance position to be ignored, click
Continue.
• “‐1“ is a default value as no point need to be
ignored.

Figure 16: Balance Scanning Instruction

5. Click Disconnect to interrupt the connection
between the Console Host Computer and Gantry
(see Figure 17).
6. Power Off the Gantry.
7. Switch off QF102.
8. Lock the Rotor.

!
WARNING: Make sure the Power is Off and the
Rotor is locked.

Figure 17: Disconnect

9. Add or remove the recommended

weights at the recommended position(s)
that appear in the Rotor Balancing
Calibration dialog box (see Figure 18).
10. Make sure the weights are tightly
secured. Tighten the bolts securing the
weights with a torque of 40Nm.
11. Unlock the Rotor.
12. Power On the Gantry.
13. Click Connect.

Figure 18: Balance Instruction

WARNING: Make sure no one is in the scanner room, and the scanner room door is
closed.
14. Click Confirm to continue the calibration.
15. Click Confirm to zero the couch in the
dialog box (see Figure 19).

Figure 19:

16. The software repeats the Rotor Balancing calibration to verify whether the Gantry is balanced. If it is
not balanced, repeat the Add/Remove procedure according to the prompt.

17. When the Rotor Balancing plot is accepted, the plot will be similar to Figure 20 and the weight
balancing calibration is done.
18. Click Exit to close Rotor Balancing Calibration.

Figure 20: Rotor Balancing Plot (accepted)

2.6 Filament Pre-adjustment

2.6.1 Estimated Time
• 2 minutes

2.6.2 Overview
Filament Pre‐adjustment is necessary for the following reasons:
• New System Installation
• New X-ray tube Installation.

2.6.3 Pre-adjustment Calibration Procedure

Perform Filament Pre‐adjustment Calibration as follows:
1. In the main Calibration Process interface, check
Filament Pre‐adjustment Calibration and click
Next.
2. Click Confirm to continue (see Figure 21).

Figure 21: Filament Pre‐adjustment Calibration

WARNING: Make sure no one is in the scanner

room, and the scanner room door
is closed.
3. Click Confirm to start the calibration process.
4. After the Filament Pre‐adjustment Calibration
finished, click Exit to close the Filament Pre‐
adjustment Calibration. Figure 22:

2.7 Tube Conditioning

2.7.1 Estimated Time
• 60 minutes

2.7.2 Overview
Tube Conditioning is necessary for the following reasons:
• New X-ray tube Installation.
• The system has not been used for seven days or more.
• When Tube arcing is reported, the first troubleshooting technique should always be tube conditioning.
• When performing the half year Planned Maintenance procedure, check whether arcing was reported
in error log. If Yes, and the error was not repaired, perform tube conditioning.

2.7.3 Tube Conditioning Procedure

Note: Make sure the anode heat is less than 20%, before starting tube conditioning.
1. In the main Calibration Process interface, check Tube Conditioning and click Next.

Note: In the event of arcing shutting down the generator, make sure that wait for 5 minutes and the anode heat is less than
20%before restarting tube conditioning.

Note: If the tube conditioning is interrupted incidentally because of special event, restart the tube conditioning from the
previous protocol when the arcing occurred.

WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.
2. Click Confirm to continue the process.

3. After the Tube Conditioning finished, click Exit to exit.

!
CAUTION: Stopping the Tube Conditioning before the process has completed may result in damaging
the Tube. Perform tube conditioning when the system is idle (not in use).

2.8 Filament Calibration

2.8.1 Estimated Time
• 10 minutes

2.8.2 Overview
Filament Calibration is necessary for the following reasons:
• New X-ray tube Installation.
• HV Generator Replacement
• PM

2.8.3 Filament Calibration Procedure

1. In the main Calibration Process interface, check
Filament Calibration and click Next.

WARNING: Make sure no one is in the scanner

room, and the scanner room door
is closed.
2. Click Confirm to continue the process (see
Figure 23). Figure 23: Filament Current Calibration

!
WARNING: Make sure no one is in scanner
room, and the scanner room door is closed.
3. Click Confirm to continue the process.
4. After the Filament Calibration finished, click Exit.

2.9 A-Plane Pre-adjustment

2.9.1 Estimated Time
• 20 minutes

2.9.2 Tools Required

• Standard FSE tool kit

• A-Plane Pre-adjustment kit, the kit 12NC is 454110636191.

Fix Bracket
Reference Block Dial Gauge

Figure 24: A‐plane Pre‐adjustment tools

2.9.3 A-Plane Pre-adjustment Procedure

Perform A‐Plane Pre‐adjust as follows:
1. In the main Calibration Process interface, check A‐Plane Pre‐adjustment Calibration and click
Next(see Figure 25).

Figure 25: A‐Plane Pre-adjustment

2. Click Confirm to start the A‐plane Pre‐adjustment Calibration.

3. Click Confirm to continue the calibration

(see Figure 26).

Figure 26:

!
WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.

4. Click Confirm in the pop‐up dialog box (see Figure 27).

5. Choose Disconnect in the pop‐up dialog box to turn off
the machine(see Figure 28).
6. Follow the instructions in the pop‐up dialog box see
(Figure 28) and (Figure 29).

Figure 27:

Figure 28:

Figure 29:

a. Power off the gantry

b. Switch off QF102.
c. Lock the Rotor.
d. Remove the cover of A‐Plane by detaching 7 screws(see Figure 30).
e. Install the Dial Gauge Fix Bracket.
Note: The Reference Block should be set up very close to the A‐plane Bracket. If the space is too small to place the Reference Block,
adjust the Z‐position Flag or Z‐position Detection Board.
f. Tighten the screw to secure the Dial Gauge.
g. Position the Reference Block between the A‐Plan Grid and the test head of Dial Gauge.
h. Reset the Dial Gauge by pressing the “Zero” button (see Figure 31).

Reference Block

Fix Bracket

Reset Button

Figure 30: A‐Plane Covers Figure 31: A‐Plane Pre‐adjust Dial Gauge

i. Adjust as the instructions with slight tapping (see

Figure 32).
Note: keep the adjust accuracy the same as the Dial Gauge.
j. Remove the Gauge Block to release the Dial Gauge
tip(see Figure 32).
k. Multiply the result by 100 and type the value in the
text box(see Figure 29).
7. Click Confirm to continue the calibration (see Figure 29).

Figure 32:
8. A dialog box appears, follow the instructions in the pop‐
up dialog box(see Figure 33).
a. Remove the Dial Gauge and the bracket.
b. Install the cover of the A‐Plane by securing 7 screws
with torque.
c. Unlock the Rotor.
d. Switch on the QF102.
e. Power on the gantry.
9. Click Connect to continue the calibration.
Figure 33:

!
WARNING: Make sure no one is in the scanner
room, and the scanner room door is closed.
10. In the pop‐up dialog box, click Confirm to continue the
calibration (see Figure 34).
Figure 34:

Figure 35: A‐plane Pre‐adjustment Calibration Complete (for example)

11. After the A‐Plane Pre‐adjustment finished, click Exit.

2.10 Tube Mechanical Alignment

2.10.1 Estimated Time
• 30 minutes

2.10.2 Tools Required

• Standard FSE tool kit
• Allen Wrench

2.10.3 Overview
There are six screws that secure the Tube on right and left side.

Note: The four M12 screws are for Z and X positon; the two M5 screws are only for X positon.

Figure 36: Figure 37:

Figure 38: Tube Left Securing Screws Figure 39: Tube Right Securing Screws

2.10.4 Tube Mechanical Alignment Procedure

Note: Protect the DMS from accidentally dropping any object with a mat.
1. In the main Calibration Process interface, check the Tube Mechanical Calibration, and click Next.
2. A dialog box appears, follow the instructions to position the Phantom(see Figure 40).

Figure 40: Tube Mechanical Alignment

a. If the couch is vertical movable type, manually adjust the couch to 340 display height.
b. Install the phantom holder.
c. Position the 7inch Water Phantom in ‐50mm as shown in Figure 41 (see 2.3.3 Initial Parameters
Setting on page 18).
d. Adjust the holder to level the phantom against the ground.
e. Open laser light. Center the laser beam on the center of the pin (see Figure 42).
f. Move the table top until the middle position of metal rod aligns with the X‐ray plane.
3. After positioning the Pin, click Confirm to continue the calibration(see Figure 40).

!
WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.

Figure 42: Pin Position

Figure 41: 7 Inch Water Phantom (For Example)

4. If the Phantom position is not accepted, adjust the
Phantom position when prompted to do so (see
Figure 43), and click Confirm to continue the
calibration.

Figure 43: Phantom Position Adjust

5. If the Pin position is accepted, a plot is displayed as shown in Figure 44 and Figure 45, and the scan
continues.

Figure 44: Pin Position Plot Figure 45: Pin Position Plot

!
WARNING: The Gantry power must be shut down, and the Rotor must be locked before performing any
adjustments.

6. If the Tube X&Z direction needs to be adjusted, the

result is displayed.
7. Click Disconnect to interrupt the connection between
the Host and the Gantry.
8. Adjust the Tube X direction and Tube Z direction
according to the instructions in the Tube Mechanical
Alignment dialog box as shown in (see Figure 46).
a. Power Off the Gantry.
b. Power Off the QF102
c. Lock the Rotor.
d. Loosen the 4 screws which secure the Tube as shown
in Figure 49 and Figure 50.

Figure 46: Tube Mechanical Alignment Adjust

Figure 47: Tube Left Securing Screws Figure 48: Tube Right Securing Screws

Note: when you adjust X‐Direction, following Step e on page 46 firstly.

Note: When you adjust Z‐Direction, NO Need to loosen the 2 M5 screws, directly continue with Step g on page 46.
e. Loosen the two M5 screws which is connected cross plate and collimator on both sides (see Figure 51).
f. Adjust the X‐Direction lead screw (see Figure 51) according to the prompt.
g. Adjust the Z‐Direction lead screw (see Figure 52) according to the prompt.

Figure 49: Figure 50: M5 Screws for Z Direction

Figure 51: X‐direction Adjust Screw Figure 52: Z‐direction Adjust Screw

h. After the adjustment is complete, tighten the 4 screws (Toqure=70 N.m/52 lbf‐bt) to secure the
Tube.
i. Tighten the two M5 screws (Toqure=5 N.m) which is connected cross plate and collimator
j. Unlock the Gantry Rotor.

!
WARNING: Do not forget to Unlock the Rotor.
9. Switch on QF102.
10. Power On the Gantry, and click Connect to get connect with Gantry.
11. Click Confirm to return the couch to its original position (see Figure 53).
12. Check the pin position if it is in the scan field, click Confirm (see Figure 54).

Figure 53: Couch Back To The Original Position Figure 54: Pin In The Scan Field

!
WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.

13. If no one is in the scanner room, and the scanner

room door is closed, click Confirm (see Figure 55).

Figure 55:

14. After Tube Mechanical Calibration successfully, the scan information turn green (see Figure 56).

Note: If Tube Mechanical Calibration is not successful, the system will repeat from Step 7 on page 45 automatically.

Figure 56:

Note: If the Tube X&Z Direction adjustment is not successful, perform the adjustment again according to the instructions.

Notes: If you are unable to correct the Tube X&Z direction: Return the tube to it’s original location and repeat the Tube
Mechanical Alignment procedure.
• Adjust the X‐direction to the Original position, make the tick mark align with the line on the tube base (see
Figure 57).
• Adjust the Z‐direction to the Original position, make the tick mark align with the line on the tube base (see
Figure 57).

X-position Tick Mark

Z-position Tick Mark

line
line

Figure 57: Tube X&Z Original Position

15. Click Exit to exit.

2.11 A-Plane Calibration

2.11.1 Estimated Time
• 10 minutes

2.11.2 A-Plane Calibration Procedure

Perform A‐Plane Calibration as follows:
1. In Custom Calibration, select the A‐Plane
Calibration check box and click Next.
2. Make sure there are no objects in the scan field, then
click Confirm to continue the calibration (see
Figure 58).
Note: Do not move the Patient Table during the calibration
procedure.

Figure 58: A‐Plane Calibration

WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.
3. Click Confirm to continue the process.
4. After the A‐Plane Calibration finished, click Exit to exit.

2.12 Nonlinearity Calibration

2.12.1 Estimated Time
• 15 minutes

2.12.2 Nonlinearity Calibration Procedure

!
CAUTION: Do not move the Patient Table during the calibration process.
• It is recommended to close the Gantry Cover and replace the Mylar during the calibration
process.
• Ensure no collision between phantom and gantry. Be sure the step phantom not on the
lowest height of the holder.
Perform NonLinearity Calibration as follows:

1. In the main Calibration Process interface, check

Nonlinearity Calibration and click Next.
2. A dialog box appears, follow the instructions to
position the Phantom(see Figure 61).
a. If the couch is vertical movable type, manually
adjust the couch to 340 display height.
b. Install the assisted connection on the holder and
then install the step phantom(see Figure 59).
c. Adjust the holder height to‐150mm position as
shown in Figure 61 (see 2.3.3 Initial Parameters
Setting on page 18).
d. Adjust the holder to level the phantom against the
ground.
e. Move the table top until the mark on the higher
layer of the phantom aligns with X‐ray plane(see
Figure 60). Figure 59: step phantom

Figure 60: Set the Mark

Figure 61: Nonlinearity Calibration

!
WARNING: Make sure no one is in the scanner room, and the scanner room door is closed.
3. Click Confirm to continue the calibration.

4. Make sure there is no one in the scanner

room, and the scanner room door is
closed (see Figure 62).
5. Click Confirm to start the scanning for
calculating the phantom position.
6. If the phantom position is not accepted,
adjust the phantom position according to
the system prompts (see Figure 63), then
click Confirm to continue the calibration.
7. If the Phantom position is accepted, click
Confirm to continue (see Figure 64). Figure 62:

Figure 64:

Figure 63: Adjust the Position

8. Check all the scan protocol (see Figure 65), and click
Confirm to continue.

WARNING: Make sure no one is in the scanner

room, and the scanner room door is
closed.

Figure 65: Nonlinearity Protocols

9. During the Nonlinearity calibration, the calibration

result plot is displayed.
There are tabs at the top of the window. The first tab is
a plot of Coordinate system0 (see Figure 66).
Click Coordinate system1 and Coordinate system2 to
verify the other plots (see Figure 67 on page 56 and
Figure 68 on page 56).

Note: If the calibration result plot is not accepted,

repeat the calibration.
10. After the Nonlinearity Calibration finished, click
Exit.

Figure 66: Nonlinearity curve0 (for example)

Figure 67: Nonlinearity curve1 (for example) Figure 68: Nonlinearity curve2 (for example)

2.13 Crosstalk Calibration

2.13.1 Estimated Time
• 15 minutes
2.13.2 Crosstalk Calibration Procedure

!
CAUTION: Make sure there are no bubbles in the Phantom. Bubbles may corrupt the calibration results.
• Do not move the Patient Table during the calibration process.
• It is recommended to open the Gantry Cover and replace the Mylar during the calibration
process.

Perform Crosstalk Calibration as follows:

1. In the main Calibration Process interface, check
Crosstalk Calibration and click Next.
2. A dialog box appears, follow the instructions to
position the Phantom(see Figure 69).
a. If the couch is vertical movable type, manually
adjust the couch to 340 display height.
b. Install the assisted connection on the holder and
then install the 7 inch water phantom.
c. Adjust the holder height to ‐50mm position as
shown in Figure 69(see 2.3.3 Initial Parameters
Setting on page 18).
d. Adjust the holder to level the phantom against
the ground. Figure 69: Crosstalk Calibration Instruction For ‐50mm
Position (For Example)
e. Move the table top until the mark on the
phantom aligns with the X‐ray plane.
3. Click Confirm to continue.

!
WARNING: Make sure no one is in the scanner
room, and the scanner room door is closed.
4. Click Confirm to start the scan for calculating phantom
position(see Figure 70).

Figure 70:
5. If the phantom position is not accepted, adjust the phantom position according to the system prompts.
6. After adjustment, click Confirm (see Figure 71).
Note: It needs 3‐5 minutes to generate calibration parameters after scans below.

Figure 71:
7. After the ‐50mm phantom position calibration is accepted, shift the phantom to the rest two positions as the
instruction (see Figure 7 and Figure 73).

Figure 72: ‐105mm Phantom Position Figure 73: ‐165mm Phantom Position

8. Make sure there is no person in the scanner room, and

the scanner door is closed, click Confirm to continue
the process (see Figure 74).

Figure 74:

9. During the CrossTalk calibration process a plot of Coordinate system0 (see Figure 75) of the results is
displayed.
10. If the calibration result plot is not accepted, after the calibration finished, repeat the calibration using
this scan protocol.

11. After the Crosstalk Calibration finished, click Exit.

Figure 75: CrossTalk Plot (for example)

2.14 Beam Hardening Calibration

2.14.1 Estimated Time
• 15 minutes

2.14.2 Beam Hardening Procedure

!
CAUTION: Make sure there are no bubbles in Phantom, it may affect the calibration results.
• Do not move the Patient Table during the calibration process.
• It is recommended to close the Gantry Cover and replace the Mylar during the calibration
process.
Perform Beam Hardening Calibration as follows:
1. In the main Calibration Process interface, check Beam Hardening Calibration and click Next.
2. A dialog box appears, follow the instructions to position the Phantom(see Figure 76).
a. If the couch is vertical movable type, manually adjust the couch to 340 display height.
b. Install the 7inch Water phantom.
c. Adjust the holder height to ‐190mm position (see 2.3.3 Initial Parameters Setting on page 18).
d. Adjust the holder to level the phantom against the ground.

3. Click Confirm to continue(see Figure 76).

Figure 76: Beam Hardening Instruction

WARNING: Make sure there is no one in the scanner room, and the scanner room door is closed.
4. Click Confirm to start the scan for calculating the phantom position.
5. If the phantom position is not accepted, adjust the phantom position according to the system
prompts, and then click Confirm to continue the process.
6. When the phantom position is accepted click Confirm to continue.

7. Check all the scan protocols, include Voltage and Collimation(see Figure 77 and Figure 78), and click
Confirm to continue.

Figure 78: Beam Hardening Protocols (for 16‐slice)

Figure 77: Beam Hardening Protocols (for 6‐slice)

8. Click Confirm to continue the process.

WARNING: Make sure no one is in the scanner room and the scanner room door is closed.
9. During the Beam Hardening calibration process, the screen shows the calibration result plot.
10. The plots are displayed for Coordinate system 0, Coordinate system 1, Coordinate system 2, and
Coordinate system 3 (see Figure 79). If the calibration result plot is not accepted, wait for the
calibration scan to finish and then repeat the calibration for this scan protocol.

11. After the Beam Hardening Calibration finished, click Exit.

Figure 79: Beam Hardening Result Plot (for example)

2.15 HCOR Calibration

2.15.1 Estimated Time
• 30 minutes

2.15.2 HCOR Calibration Procedure

!
CAUTION: Make sure there are no bubbles in the Phantom; it may affect the calibration results.
• Do not move the Patient Table during the calibration process.
• It is recommended to open the Gantry Cover and replace the Mylar during the calibration
process.
Perform HCOR Calibration as follows:
1. In the main Calibration Process interface, check HCOR Calibration and click Next.
2. A dialog box appears, follow the instructions to position the Phantom(see Figure 80).
a. If the couch is vertical movable type, manually adjust the couch to 340 display height.
b. Install the 7inch Water phantom.
c. Adjust the holder height to 0mm position (see 2.3.3 Initial Parameters Setting on page 18).
d. Adjust the holder to level the phantom against the ground.

3. Click Confirm to continue the process.

Figure 80: HCOR Instruction

WARNING: Make sure there is no one in the scanner room and the scanner room door is closed.

4. A warning dialog box appears, click Confirm to start

the scan for calculating the phantom position(see
Figure 81).
5. If the phantom position is not accepted, adjust the
phantom position according to the system prompts,
then click Confirm.
6. When the phantom position is accepted, click Confirm
in the dialog box to continue (see Figure 82).

Figure 81:

Figure 82:
7. Check all the scan protocols, include Voltage and Collimation (see Figure 83 and Figure 84), and click
Confirm.

Figure 84: HCOR Protocols (for 16‐slice)

Figure 83: HCOR Protocols (for 6‐slice)

!
WARNING: Make sure no one is in the scanner room and the scanner room door is closed.
8. A warning dialog box appears, click Confirm to continue the process.
9. While the HCOR calibration is in progress, the screen shows the calibration result plot.
10. The plots are displayed for Coordinate system 0 (see Figure 85). If the calibration result plot is not
accepted, wait for the calibration scan to finish and then repeat the calibration for this scan protocol.
11. Once the HCOR Calibration is complete, click Exit.

Figure 85: HCOR Result Plot (for example)

2.16 Air Calibration

2.16.1 Estimated Time
• 30 minutes

2.16.2 Air Calibration Procedure

1. In Custom Calibration, check Air Calibration and click Next.

Figure 86: Air Calibration

!
CAUTION: Make sure:
• The Gantry covers are closed and the Mylar is in place.
• For Vertical Moveable Couch the vertical position is higher than 300mm.
• No objects are in the scan field.

WARNING: Make sure no one is in the scanner room and the scanner room door is closed.

2. Click Confirm to continue the process(see Figure 86).

Note: Do not move the Patient Table during the calibration process.
3. Select the check boxes for all scan protocols, including Speed, Collimation, Resolution, Voltage(see
Figure 87 and Figure 88).
4. Click Confirm to start calibration.

Figure 87: Air Calibration (for 6‐slice) Figure 88: Air Calibration (for 16‐slice)

5. While Air calibration is in progress the screen shows the calibration result plot.
If the calibration result plot is not accepted, repeat the calibration for the failed scan protocol.
6. Once the Air Calibration is complete, click Exit.
The whole Auto Calibration procedure is completed.

Note: After the whole Auto Calibration is completed successfully, restart console software and open tube history to check
the new tube information.

Section 3 Hardware Calibrations

3.1 Hardware Calibration Reasons Matrix

Calibration Process

Patient Table Horizontal

Patient Table Vertical

Adjust Belt Tension

Adjust HV Setting
Adjustment

Adjustment
New System Assembly (production only) Y Y Y

Stator Control Board Replacement

Gantry Rotor Replacement Y

Power Control Box Replacement Y

Gantry Rotation Belt Replacement Y

Patient Table Vertical Encoder Replacement (for vertical

Y Y
moveable Patient Table)

Patient Table Vertical Limit Switch Replacement (for vertical

Y
moveable Patient Table)

Patient Table Horizontal Motor Replacement Y

3.2 Vertical Moveable Patient Table Vertical

Adjustment
3.2.1 Tools Required
• Tape measure

!
WARNING: Follow all safety guidelines as described in the Safety Guidelines Manual when performing
the procedures listed in this section. Failure to do so can result in severe personal injury!
Remove the Vertical Moveable Patient Table covers when performing Vertical Moveable Patient Table
Vertical Adjustment. Refer to the Access CT Patient Table Replacement and Repair Manual.
Perform the Vertical Moveable Patient Table vertical adjustment as following procedures:

Note: Perform all height measurements listed in the Patient Table Vertical Adjustment procedure with a tape measure.

1. Raise the Vertical Moveable Patient Table using Control Panel and measure the height of the Vertical
Moveable Patient Table (from ground to upper side frame) (see Figure 1) until the height to 909.5±1
mm.
2. Use a M3 Allen Key to push the Reset Switch on Height encoder.
The encoder turns red and then turns green(see Figure 2), the Height display on the CTBOX is 462.

Measure the
Height from the Floor
Figure 2: Reset Switch

Figure 1:

3. Lower the Vertical Moveable Patient Table using

Control Panel, and measure the height of the Vertical
Moveable Patient Table (from ground to upper side
frame) (see Figure 1) until the height to 722.5±2mm.
4. Adjust the position of the Down Limit Switch to make
it release. It may be in closed status before adjustment
(see Figure 3).

Figure 3: Adjust the Down Limit Switch

5. Raise the Vertical Moveable Patient Table using
Control Panel and measure the height of the Vertical
Moveable Patient Table (from ground to upper side
frame) until the height to 937.5±2 mm.
6. Adjust the position of the Up Limit Switch to make it
release. It may be in closed status before adjustment
(see Figure 4).

Figure 4: Adjust the Up Limit Switch

3.3 Vertical Moveable Patient Table Horizontal

Adjustment

!
WARNING: Follow all safety guidelines described in the Safety Guidelines Manual when performing the
procedures listed in this section. Failure to do so can result in severe personal injury.

3.3.1 Horizontal Motion Control Switch for Vertical Moveable

Patient Table
• There are four Patient Table horizontal movement switches.
• One Limit Switch in the In horizontal position of the Patient Table.
• One Limit Switch in the Out horizontal position of the Patient Table.
• One Safety Switch in the rear.
• One Zero Switch in the rear.
• When the In or Out Limit Switch is engaged, the Patient Table stops moving horizontally.
• When the Safety Switch is not pressed, the Patient Table cannot be lowered below the DOWN
position.
• Pressing the Zero Switch resets the Horizontal Patient Table Code.

Position of each switch are displayed in Figure 5 on page 77:

Note: The positions of the switches

are fixed and do not need to
be adjusted.
Safety Position Switch (SL304)

In Limit Switch (SL301)

Zero Positon Switch (SL303)

Out Limit Switch (SL302)

Figure 5:

3.4 Fixed Patient Table Horizontal Adjustment

!
WARNING: Follow all safety guidelines described in the Safety Guidelines Manual when performing the
procedures listed in this section. Failure to do so can result in severe personal injury.

3.4.1 Horizontal Motion Control Switch for Fixed Patient Table

• There are four Patient Table horizontal movement switches.
• One Limit Switch in the In horizontal position of the Patient Table.
• One Limit Switch in the Out horizontal position of the Patient Table.
• One Safety Switch in the rear.
• One Zero Switch in the rear.
• When the In or Out Limit Switch is engaged, the Patient Table stops moving horizontally.
• When the Safety Switch is not pressed, the Patient Table cannot be lowered below the DOWN
position.
• Pressing the Zero Switch resets the Horizontal Patient Table Code.

Position of each switch are displayed in Figure 6 on page 79:

Note: The positions of the switches

are fixed and do not need to Safety Position Switch (SL304)
be adjusted.

In Limit Switch (SL301)

Zero Positon Switch (SL303)

Out Limit Switch (SL302)

Figure 6:

3.5 Adjusting Belt Tension

3.5.1 Tools Required
• Tension meter

3.5.2 Overview
Use the following procedure to accurately adjust the
tension of the rotation belts in the system. Measuring
This procedure requires the use of the tension meter (see Sensor
Figure 7) (listed as the Rotation Belt Stress Measurement
Device in the Installation/Service Tools list).
The tension meter stores the belt parameters and uses them
to calculate the tension created by the belt when it is
flicked.
For more information, refer to the tension meter user guide.

LCD Display

Power Key Measure Key

Weight, Width, Span Keys

Number
Keys Select Key

Figure 7:

3.5.3 Parameter Setup

Note: During the Object parameter setup, the values for each component (see Object column in Table 1) are stored in the
memory of the Rotation Belt Stress Measurement Device. Therefore, when it is necessary to tighten the same belt
again, you need only to select the Sequence Number stored in the device.
Set up the tension meter as follows:
1. Press on the Power key to turn ON the tension meter.
2. Setup the Sequence Number: press SELECT and the Number key of the desired sequence shown in
Table 1 on page 81.
3. Setup the parameters of the synchronous belt:
a. Press the WEIGHT key and set the unit mass according to cursor position on LCD display. For
example, to enter 2.5, press ʺ0025ʺ.
b. Press the WIDTH key and setup the belt width.
c. Press the SPAN key and setup the belt length.
T

Table 1:

Sequence Parameter Tension

Object Belt Type
Number Weight Width Span N lbf

0 Gantry Rotor 3600‐8M‐30 4.2g/m 30mm 832mm 240‐280 77

6 Patient Table Vertical Encoder HTD‐426‐3M 2.4g/m 6mm 115.5mm 10 7.4

3.5.4 Measuring Belt Tension

1. After setting up the Object parameters, select the Sequence Number corresponding to the belt to be
tightened.
2. Select the longest section of belt and be as close as possible to the center.
3. Place and Keep the distance within 10 ‐ 30mm between the measurementʹs sensor and the belt.
4. Press MEASURE.
The LCD display starts as ʺ‐‐‐‐ʺ and the green lamp at the bottom of the measurement device begins to
flicker.
5. Flick the belt and make it quiver. After 1.5sec. the result will appear on the LCD display.
If the red lamp turns ON, this indicates that the result exceeds the range, and it is necessary to repeat
the above steps until green lamp lights.
6. Adjust the tension of the belt until it meets the required measurements shown in Table 1 on page 81.
7. Turn OFF the tension meter by pressing and holding the POWER button until the display turns off.

Gantry Rotation Belt Tension Adjustment Procedure

1. Remove the Gantry Rear Cover (for details
Adjustment Bolt
see Gantry Repair and Replacement
Manual).
2. Loosen the two fixing screws (see Figure 8).
3. Turn the Adjust bolt clockwise to tighten the
belt.
Use the Sound Wave Belt Tensiometer to
measure tension of the belt according to
Table 1 on page 81 (see Figure 8).
4. Secure the belt tension screws with the two Fixing Bolts
fixing screws that were released in Step 2 on
page 83.
5. Install the Gantry Rear Cover.

Measuring Point
Figure 8: Rotation Belt Tension

Vertical Moveable Patient Table Vertical Belt Tension

Adjustment Procedure
1. Open the Left and Bottom Covers of the Patient
Table (for details see Patient Table Repair and
Replacement Manual).
Measuring
2. Release the two screws holding the Patient Table Point
Vertical Position Counter. See Figure 9 on
page 84. Tighten
Loosen
3. Push the Patient Table Vertical Position Counter:
• Out to tighten the belt.
• In to loosen the belt.
4. Use Sound Wave Belt Tensiometer to measure
the tension of belt according to Table 1 on page 81
(see Figure 9).
5. Secure the Position Adjustment screws with the
two screws released in Step 2 on page 84.
6. Replace the Left and Bottom Covers of the Patient
Table.

Figure 9:

The following Phantoms are used in the calibration procedure.

!
CAUTION: The 7 Inch Water Phantom needs to be filled with pure water and should not contain any (or
minimal) air bubbles. When positioning the phantom, make sure that any trapped air
bubbles are behind the 'bubble catcher'.

Bubble
Catcher

Figure 1: Step Phantom

Figure 2: 7 Inch Water Phantom

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