Briere Tina Marie, Beddar A Sam, Gillin Michael T
Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.
Med Phys. 2005 Nov;32(11):3346-9. doi: 10.1118/1.2065447.
We have studied the response of factory calibrated implantable MOSFET detectors to absorbed doses from 100 to 400 cGy. The average measured dose is quite close to the true delivered dose, with the standard deviation falling between 1.4 and 3.6%. The measured dose tends to be slightly underestimated for smaller doses, while it tends to be slightly overestimated for larger doses. Thus, although the calibration of the detector is most accurate for doses close to the calibration dose of 200 cGy, it may be used over the range of commonly used doses in fractionated radiotherapy.
我们研究了工厂校准的植入式MOSFET探测器对100至400 cGy吸收剂量的响应。平均测量剂量与实际 delivered 剂量非常接近，标准偏差在1.4%至3.6%之间。对于较小剂量，测量剂量往往会略有低估，而对于较大剂量，则往往会略有高估。因此，尽管探测器的校准在接近200 cGy校准剂量的剂量下最为准确，但它可用于分割放疗中常用剂量的范围。
