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Digital Breast Tomosynthesis

Digital Breast Tomosynthesis (DBT), or 3D mammography, enhances breast cancer detection by acquiring multiple low-dose images from different angles, allowing for improved visibility of lesions and reduced false positives compared to traditional 2D mammography. While it offers significant advantages such as better localization and increased detection rates, DBT also has limitations including higher costs and slightly increased radiation exposure. Overall, DBT is a promising advancement in breast imaging that improves early diagnosis and patient outcomes.

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Malik Asad Raza Chap
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16 views13 pages

Digital Breast Tomosynthesis

Digital Breast Tomosynthesis (DBT), or 3D mammography, enhances breast cancer detection by acquiring multiple low-dose images from different angles, allowing for improved visibility of lesions and reduced false positives compared to traditional 2D mammography. While it offers significant advantages such as better localization and increased detection rates, DBT also has limitations including higher costs and slightly increased radiation exposure. Overall, DBT is a promising advancement in breast imaging that improves early diagnosis and patient outcomes.

Uploaded by

Malik Asad Raza Chap
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPTX, PDF, TXT or read online on Scribd
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Digital Breast

Tomosynthesis
Presented By
•
• Asad Raza 204
• Sanwar ud din 208
• Asim Javed 216
• Sehran asghar 220
• Qrar Hussain 222
Introduction
• Breast cancer is a leading cause of cancer deaths in
women.
• Early detection is crucial for better prognosis.
• Imaging plays a central role in screening and diagnosis.
• Conventional 2D mammography has limitations:
• Overlapping tissues can hide or mimic lesions.
What is Digital Breast
Tomosynthesis (DBT)?
• Also known as 3D mammography.
• Acquires multiple low-dose images at different angles.
• Images are reconstructed into thin, 1 mm slices.
• Allows layer-by-layer examination of breast tissue.
• Reduces tissue overlap and improves lesion visibility.
DBT vs 2D Mammography
• 2D Mammography:
• •Flat image.
• Prone to false positives due to tissue overlap.
• •DBT:
• Produces a 3D view of the breast.
• Higher accuracy and lesion detectability.
• Better for women with dense breast tissue.
• Fewer recalls and false positives.
Principles of DBT
• X-ray tube moves in a limited arc (15–50°).
• Multiple low-dose projections are captured.
• Digital detector records each projection.
• Images reconstructed using special algorithms.
• Output: A stack of thin-section images.
Equipment and Technology
• •Key components:
• Movable X-ray tube.
• Digital flat-panel detector.
• Compression paddle and gantry.
• Workstation with reconstruction software.
• Brands include Hologic, GE, Siemens.
Clinical Applications
• Screening tool for breast cancer.
• Diagnostic tool for:
• Masses.
• Calcifications.
• Asymmetries.
• Architectural distortions.
• Used in preoperative planning.
• Useful in monitoring response to therapy.
Advantages of DBT
• Better lesion visibility.
• Reduces overlapping tissue artifacts.
• Increased cancer detection rate.
• Lower false-positive rate.
• Improved localization of abnormalities.
• Higher confidence in diagnosis.
Limitations of DBT
• Slightly higher radiation dose than 2D.
• Longer time to acquire and interpret images.
• More expensive equipment.
• Requires trained staff and radiologists.
• Not yet universally available.
Radiation Dose Considerations
• DBT + Synthesized 2D images ≈ 2D mammography
dose.
• Synthesized 2D eliminates the need for separate 2D
images.
• Dose remains within ACR and FDA safety standards.
Conclusion
• DBT is a transformative tool in breast imaging.
• Enhances accuracy and detection.
• Reduces unnecessary follow-ups.
• Improves outcomes through early diagnosis.
• Represents the future of breast cancer screening.

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