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[Brachytherapy for prostate carcinoma].

Atsunori Yorozu1

  • 1Department of Radiology, Tokyo Medical Center, National Hospital Organization.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|June 1, 2005
PubMed
Summary

This review outlines prostate brachytherapy guidelines, recommending specific doses for organ-confined disease and supplemental radiation for extraprostatic extension risk. It emphasizes dosimetric planning and standardized morbidity reporting for better patient outcomes.

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Area of Science:

  • Oncology
  • Radiation Oncology
  • Medical Physics

Context:

  • Prostate brachytherapy, including I-125 seed implants and Ir-192 high-dose-rate (HDR) techniques, is increasingly utilized in Japan.
  • Established consensus guidelines from the American Brachytherapy Society (ABS) provide a framework for treatment and reporting.

Purpose:

  • To review prostate brachytherapy techniques and disseminate consensus guidelines for optimal patient management.
  • To establish standardized dosimetric planning, post-implant evaluation, and morbidity reporting for prostate brachytherapy.

Summary:

  • Recommends brachytherapy for organ-confined prostate cancer, with supplemental external beam radiation for those at risk of extraprostatic extension.
  • Prescribes 145 Gy for monotherapy and 100-110 Gy boost doses after external beam therapy.
  • Mandates pre-implant dosimetric planning and post-implant evaluation, including dose-volume histograms and reporting of rectal and urethral doses.

Impact:

  • Standardizing reporting of prostate brachytherapy-related morbidities (urinary, rectal, sexual function) correlated with normal tissue doses.
  • Encourages the development of both permanent seed implant and HDR brachytherapy techniques in Japan to improve treatment efficacy and patient care.

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