MR Imaging System
Model AIRIS Series / MRP Series
Latchable Joint Coil
MR-JCL
TECHNICAL GUIDE
--- Installation & Adjustment ---
HITACHI MEDICAL CORPORATION
Tokyo, Japan
LZE-BM5136-4
CONFIDENTIALITY This material contains proprietary information of Hitachi
Medical Corporat,ion and it shall not be disclosed to the third party or reproduced
without the prior written permission of Hitachi Medical Corporation.
Copyright 0 Hitachi Medical Corporation. 1996, 1997, 1999,ZOOO. All rights reserved.
CONTENTS
Page
1. Adjustment of the MR-JCL Coil . . . . . . . . . . . . . . . . . . . .._.............................................................................. 1
2. Registration of Coil Data ................................................................................................................ 2
2.1 AIRIS Series .......................................................................................................................... 2
2.2 AIRIS-II Series ...................................................................................................................... 3
2.3 MRP-7000 Series.. ................................................................................................................. 4
2.4 MRP5000AD.. ....................................................................................................................... 4
2.5 AIRIS-mate.. .......................................................................................................................... 4
3. Check of S/N Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5
3.1 AIRIS and MRP-7000 Series.. .............................................................................................. 5
3.2 AIRIS-II ................................................................................................................................. 6
3.3 MRP5000AD.. ....................................................................................................................... 7
3.4 AIRIS-mate.. .......................................................................................................................... 8
4. Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~.. 9
5. Recording Sheet . . . . . . ..._.................................................................................................................... 9
I. Adjustment of the MR-JCL Coil
The coil adjustment is effected in the same manner as described in the Technical Guide -
Installation & Adjustment. Only the different jobs from those in the Technical Guide will be
described here.
(1) Check the TUNE value and adjust the impedance with the phantom supplemented to the
system (nickel solution phantom No.2)
(2) The trimmer capacitors Cm and Cr for adjusting this coil are located as shown below.
Adjust the capacitors similarly to the other coils.
Cr
Cm
(3) Set the phantom and coil to the gantry.
Example Setup of Phantom
(4) The coil adjustment values should be as follows.
Tuned voltage Range of tuned value Adjustment
System name Phase
to be set to be checked impedance
AIRIS
OC - 36
MRP-7000 (1 Fl)
3002 100 Q
AIRIS-II 12 - 54
(G-l)
ot30°
MRP-5000AD OC-36
(1 ‘i,
2002 100Q
AIRIS-mate 12 - 54
2. Registration of Coil Data
2.1 AIRIS Series
Model: AIRIS- Coil: MR-JCL-52
Start the coil data entry of service mode and enter the coil name. Enter “3” for LINE in this i
case.
Coil name Coil No.
LATCH JOINT 24
Model: AIRIS- Coil: MR-JCL-62
Start the coil data entry of service mode and enter the coil name. Enter “3” for LINE in this
case.
I Coil name 1 Coil No. 1
1 LATCH JOINT 1
2.2 AIRIS-II Series
Model: AIRIS II-2 Coil: MR-JCL-52
After starting the system table editor and selecting the coil data entry, enter each parameter
referring to the table below:
Coil Name LATCH JOINT I
NO. 1 Any No. not reserved
Physical Coil No. 62 I
Attenuation Value I 00 I
Tuning Measure Points 22
RF Gain Start Value OeO
RF Gain Adjustment Step 16
Adjustment Average 1
Sensitivity Correction Coefficient 64
First Modulate Decoupling 64
Second Modulate Decoupling
- - 00
Third Modulate Decoupling 2f
Forth Modulate Decoupling 00
Selector I 1 I
Number of Channels I 1 I
Shading Correction I No I
Bed Movement I No I
Recen tion Line I 1 I
QD Attenuation Value I 0 I
Method A I
Model: AIRIS II-1 Coil: MR-JCL-62
After starting the system table editor and selecting the coil data entry, enter each parameter
referring to the table below:
Coil Name LATCH JOINT I
NO. Any No. not reserved
Physical Coil No. 75
Attenuation Value 00
Tuning Measure Points 22
RF Gain Start Value OeO
RF Gain Adjustment Step 16
Adjustment Average 1
Sensitivity Correction Coefficient 64
First Modulate Decoupling 64
Second Modulate Decoupling 00
Third Modulate Decoupling 2f
Forth Modulate Decounline 00
Selector 1
Number of Channels 1
Shading Correction No
Bed Movement I No I
Reception Line 1
BD Attenuation Value 0
Method A
2.3 MRP-7000 Series
Model: MRP-7000 Series Coil: MR-JCL-42
Start the coil data entry of service mode and enter the coil name. Enter “3” for LINE in this
case.
Coil name Coil No.
LATCH JOINT 17
2 . 4 MRPdOOOAD
Model: MRP-5000AD Coil: MR-JCL-32A
Start the coil data entry of service mode and enter the coil name. Enter “3” for LINE in this
case.
Coil name Coil No.
LATCH JOINT 15
2.5 AIRIS-mate
Model: AIRIS-mate Coil: MR-JCL-72
After starting the system table editor and selecting the coil data entry, enter each parameter
referring to the table below:
Coil Name LATCH JOINT
NO. Any No. not reserved
Physical Coil No. 61
Attenuation Value 00
Tuning Measure Points 22
RF Gain Start Value OeO
RF Gain Adjustment Step 16
Adjustment Average 1
Sensitivity Correction Coefficient 64
First Modulate Decounline: 64
3. Check of S/N Ratio
3.1 AIRIS and MRP-7000 Series
(1) Adjust the RF gain in the similar manner to that described in the Technical Guide -
Installation &Adjustment of the main unit.
(2) Set the following scan parameters and make a scan.
SLICE PLANE : TRS SEQUENCE : SE
2D/3D : 2D SEQ No. : 3
REPHASE : OFF PHASE DIR : A-P
REJECTION : OFF RECTANG : OFF
ANTI-WRAP : OFF PRESAT : OFF
ADAPTIVE IMAGE : OFF C. POSITION : 0
FOV : 260 TR : 500
TE : 40 THICKNESS : 5
MULTI SLICE : 1 ECHO : 1
NSA : 2 PROJECTION : 256
(3) Check if the S/N ratio is within the range shown below:
270
250
230
210
.g
g 1 9 0
i -3
170
150
130 . . . . . ...-.r--------------.---------,------------------------*,____-___________
110 -~---‘----:‘---‘------------------~------------------------.---------.----.-
..
:
\\ I I I
)I
20 25 30
Phantom temperature (“C)
3.2 AIRIS-II
(1) Set the following scan parameters and make a scan.
Basic group Technique group
Slice Plane : TRS S. Presat : Off Matrix group
Sequence : 2D SE Rephase : off Gating group
FOV : 260mm Phase Dir : A-P Dynamic group
TR : 500 AM1 : 25 Filter group
TEl : 40 Half Echo : off Rect.FOV : Off
FA : 90 Bandwidth : 7.2 Anti. Aliasing : off
Multi Slice : 1 MTC : off Reconmatrix : Auto
Multi Echo : 1 Gating : off
Angle# : 1 Particular group Cont. Agent : Off
Thickness : 5mm Multi Echo : 1 Breath-hold : off
Interval : 50mm Dynamic Scan : off
Dual Slice : Off Trancation : off
Freq# : 256 T2 Correction : off
Phase# : 128 Shading : off
Half Scan : Off Adaptive : off
NSA : 1
(2) Check if thc : S/N ratio is within the range shown below:
1YCI - ;8 ; I
1110/--
170
1.60
.s t 1
i!! 1.50 ---------:---------------~---------------~-----------
I
I I
? I I
t t
0 I I I
I
1 ,
I 1 :
6 8 8
---------~--------------- +-------- ----+-----------
0 It 20 25 30
Phantom temperature (“C)
3.3 MRP-5000AD
(1) Adjust the RF gain in the similar manner to that described in the Technical Guide -
Installation &Adjustment of the main unit.
(2) Set the following scan parameters and perform a scan.
SLICE PLANE : TRS SEQUENCE : SE
2D/3D : 2D SEQ No. :3
REPHASE : OFF PHASE DIR : A-P
REJECTION : OFF RECTANG : OFF
ANTI-WRAP : OFF PRESAT : OFF
ADAPTIVE IMAGE : OFF C. POSITION : 0
FOV : 260 TR : 500
TE : 40 THICKNESS : 10
MULTI SLICE : 1 ECHO : 1
NSA : 2 PROJECTION : 256
(3) Check if the S/N ratio is within the range shown below:
290
280
270
260
.o
E
2 250
a
240 . . . ------.------------------------.---------.--------~~---~;-~~~.-.---------.
230
m ::::::::~~~:::::::::::::::::
220
j Lower limit I
210
\\
\\ I I I
20 25 30
Phantom temperature (“C)
3.4 AIRIS-mate
(1) Set the following scan parameters and make a scan.
Basic group Technique group
Slice Plane : TRS S. Presat :. Off Matrix group
SecIuence : 2D SE Rephase : Off Gating group
FOV : 260mm Phase Dir : A-P Dynamic group
TR : 500 AM1 : 25 Filter group
TEl : 40 HalfEcho : Off Rect.FOV : Off
FA : 90 Bandwidth : 7.2 Anti. Aliasing : Off
Multi Slice : 1 MTC : Off Reconmatrix : Auto
Multi Echo : 1 Gating : Off
Angle# : 1 Particular group Cont. Agent : Off
Thickness : 1Omm Multi Echo : 1 Breath-hold : Off
Interval : 50mm Dynamic Scan : Off
Dual Slice : Off Trancation : Off
Frecl# : 256 T2 Correction : Off
Phased : 128 Shading : Off
Half Scan : Off Adaptive : Off
NSA : 1
(2) Check if the S/N ratio is within the range shown below:
22C
210
200
190 1” . . . . r~ ,._.,.__._..._____.._ _ ___.___ TI ..-..__..l._._” --..--_---_ i ------.--._.--...
i
0
‘3 1 8 0
z
3
170
160
150 ..-. “I _....I . ..- “...“.““” . .. I “...“_’,“..----..-----..--.-....~......~.-------..
&\\ !
140 ..,.“.....: WI
.._. _ -...Ai.....-.. _ __.. ;- .-.- _ _.____.._______ ---A.-.....-.
__ .-___.
\ Ldwer llmrt I
\I
-“.J~L--J-.--.*.---L
20 25 30
Phantom temperature (“C)
4. Operation Check
Check if normal images can be acquired for the human body.
5. Recording Sheet
( 1 ) MR-JCL-
l Impedance (MRP-7000, AIRIS, AIRIS II: 3001fr 100 Sz)
(MRP5000AD, AIRIS-mate: ZOO& 100 Q)
0 Phase o (O-t-30”)
0 Tuned value (MRP5000AD, MRP-7000, AIRIS: OC-4E)
(AIRIS II, AIRIS-mate: 12-54)
(2) S/N ratio check
l S/N (MRP-7000, AIRIS: 190+ 40)
(MRP5000AD: 250*25)
(AIRIS II: 145 i- 30)
(AIRIS-mate: 180+ 35)
l Scan room “C
temperature
