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Radiation dose-volume effects of the urinary bladder
Akila N Viswanathan1, Ellen D Yorke, Lawrence B Marks
1Department of Radiation Oncology, Brigham and Women's Hospital, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02115, USA. aviswanathan@lroc.harvard.edu
International Journal of Radiation Oncology, Biology, Physics
|February 23, 2010
Summary
This study reviews normal tissue radiation tolerance in the urinary bladder. Whole-organ irradiation provides the most reliable data, while partial-organ studies are questionable due to motion and insufficient follow-up.
Area of Science:
- Radiation oncology
- Urology
- Medical physics
Background:
- Understanding normal tissue radiation tolerance is crucial for optimizing cancer treatment and minimizing side effects.
- The urinary bladder is a radiosensitive organ frequently exposed to radiation during pelvic cancer therapy.
Purpose of the Study:
- To provide a comprehensive overview of the normal-tissue radiation tolerance of the urinary bladder.
- To critically evaluate existing studies on bladder radiation tolerance and identify limitations.
Main Methods:
- Systematic review and critical analysis of published literature on urinary bladder radiation tolerance.
- Focus on studies employing whole-organ irradiation models.
- Assessment of methodological quality, including consideration of bladder motion and follow-up duration.
Main Results:
- Studies involving whole-organ irradiation offer the most reliable data on urinary bladder radiation tolerance.
- Data from partial-organ or nonuniform irradiation studies are considered suspect due to unaddressed bladder motion.
- Many existing studies lack adequate follow-up periods to fully assess long-term radiation effects.
Conclusions:
- Whole-organ irradiation studies are essential for accurately determining urinary bladder radiation tolerance.
- Further research with rigorous methodologies, including accounting for bladder motion and extended follow-up, is necessary.
- Improved understanding will aid in developing safer radiation treatment strategies for pelvic malignancies.
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