Related Experiment Video
Updated: May 21, 2026
08:34
Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
Magnetic resonance imaging-based treatment planning for prostate brachytherapy
Jeffrey M Albert1, David A Swanson, Thomas J Pugh
1Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
Brachytherapy
|June 26, 2012
Summary
Standard body array coil MRI (sMRI) offers advantages for prostate brachytherapy planning over transrectal ultrasound (TRUS) and endorectal coil MRI (erMRI). sMRI provides better soft-tissue delineation without the distortions seen with erMRI.
Area of Science:
- Urology
- Medical Imaging
- Radiation Oncology
Background:
- Transrectal ultrasound (TRUS) is the standard for prostate brachytherapy planning.
- Magnetic resonance imaging (MRI) offers superior anatomic detail compared to TRUS.
Purpose of the Study:
- To compare prostate brachytherapy treatment plans generated using TRUS, endorectal coil MRI (erMRI), and standard body array coil MRI (sMRI).
Main Methods:
- Retrospective analysis of treatment plans from 20 patients undergoing permanent seed brachytherapy.
- Re-planning treatments using sMRI and erMRI images by blinded investigators.
- Comparison of prostate volume, radioactivity-to-volume ratio, and dosimetric parameters.
Main Results:
- Endorectal coil MRI (erMRI) demonstrated anatomic distortions compared to TRUS.
- Standard MRI (sMRI) plans showed a 7.5% lower activity per volume than TRUS plans.
- sMRI plans achieved similar planning target volume coverage and improved dose homogeneity.
Conclusions:
- Endorectal coil MRI is not recommended for routine treatment planning due to distortions.
- Standard body array coil MRI may offer advantages for prostate brachytherapy planning due to superior soft-tissue visualization.
More Related Videos
Related Concept Videos
01:27Imaging Studies IV: Magnetic Resonance Imaging
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
01:24Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...