Vatnitsky S, Miller D, Siebers J, Moyers M
Department of Radiation Medicine, Loma Linda University Medical Center, California 92354, USA.
Med Phys. 1995 Apr;22(4):469-73. doi: 10.1118/1.597608.
A PTW Riga diamond detector and LiF TLDs have been evaluated for use in proton beam dosimetry by comparing results of proton beam calibration with those obtained using thimble ionization chambers. The thimble ionization chambers were calibrated in terms of exposure while the TLDs and diamond detector were calibrated in terms of absorbed dose in a 60Co beam. Absorbed doses to muscle in proton beams for ionization chambers were derived using the TG 20 charged particle protocol. Absorbed doses to muscle for solid state detectors were derived using absorbed dose proton beam quality correction factors. Differences between the derived doses for ionization chambers and solid state detectors were found to be within the uncertainties of measurements: 4.5% for ionization chambers and 5% for solid state detectors.
通过将质子束校准结果与使用指形电离室获得的结果进行比较，对用于质子束剂量测定的PTW里加金刚石探测器和LiF热释光剂量计进行了评估。指形电离室根据照射量进行校准，而热释光剂量计和金刚石探测器则在60Co束中根据吸收剂量进行校准。电离室在质子束中对肌肉的吸收剂量是使用TG 20带电粒子协议得出的。固态探测器对肌肉的吸收剂量是使用吸收剂量质子束质量校正因子得出的。发现电离室和固态探测器的导出剂量之间的差异在测量不确定度范围内：电离室为4.5%，固态探测器为5%。
