The Journal of Korean Society for Radiation Therapy (대한방사선치료학회지)

Korean Society for Radiation Therapy (대한방사선치료학회)
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Quality Assurance for High Dose Rate Brachytherapy

고선량율 근접치료의 정도관리

  • Bang, Dong-Wan (Dept. of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine) ;
  • Cho, Chung-Hee (Dept. of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine) ;
  • Park, Jae-Il (Dept. of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine)
  • 방동완 (연세의료원 암센터 방사선종양학과) ;
  • 조정희 (연세의료원 암센터 방사선종양학과) ;
  • 박재일 (연세의료원 암센터 방사선종양학과)
  • Published : 1998.12.01
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Abstract

Accurate delivery of doses using a high dose rate(HDR) brachytherapy, remote afterloading system(RALS) depends on knowing the strength of the radioactive source at the time of treatment, the precision and consistency of the timer, and the ability of the unit to position the source at the proper dwell location along the applicator. Periodic Quality Assurance(QA) on HDR machines is a part of the standard protocol of any user. The safety of the patient & staff, positional accuracy, temporal accuracy, and dose delivery accuracy are periodically(weekly, quarterly, monthly) estimated using HDR source(Ir-192), treatment planning devices, measurement devices, and overall treatment devices with regard to treatment delivery. The overall measurement results are estimated successfully and assessed its clinical significance. As a result, our HDR brachytherapy units has been very accurate until now. The QA program protocol permits routine clinical use and provides a high confidence level in the accurate operation of HDR units. Therefore, regular QA of HDR brachytherapy is essential for successful treatment.

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