PHOTON BEAM AUDITS FOR RADIATION THERAPY CLINICS: A PILOT MAILED DOSEMETER STUDY IN TURKEY


YEĞİNGİL Z. , DEWERD L. A. , DAVIS S. D. , HAMMER C., KUNUGI K.

RADIATION PROTECTION DOSIMETRY, cilt.148, ss.249-257, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 148 Konu: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1093/rpd/ncr017
  • Dergi Adı: RADIATION PROTECTION DOSIMETRY
  • Sayfa Sayıları: ss.249-257

Özet

A thermoluminescent dosemeter (TLD) mailed dose audit programme was performed at five radiotherapy clinics in Turkey. The intercomparison was organised by the University of Wisconsin Radiation Calibration Laboratory (UWRCL), which was responsible for the technical aspects of the study including reference irradiations, distribution, collection and evaluation. The purpose of these audits was to perform an independent dosimetry check of the radiation beams using TLDs sent by mail. Acrylic holders, each with five TLD chips inside and instructions for their irradiation to specified absorbed dose to water of 2 Gy, were mailed to all participating clinics. TLD irradiations were performed with a 6 MV linear accelerator and Co-60 photon beams. The deviations from the TL readings of UWRCL were calculated. Discrepancies inside the limits of +/- 5 % between the participant-stated dose, and the TLD-measured dose were considered acceptable. One out of 10 beams checked was outside this limit, with a difference of 5.8 %.