Single-use MOSFET radiation dosimeters for the quality assurance of megavoltage photon beams
Single-use MOSFET radiation dosimeters for the quality assurance of megavoltage photon beams
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DOI：
10.1088/0031-9155/51/5/006
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发表时间：
2006-03-07
影响因子：
3.5
通讯作者：
Beddar, AS
中科院分区：
文献类型：
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作者：
Briere, TM;Lii, J;Beddar, AS
我们研究了一次性使用的MOSFET探测器作为质量保证器件的适用性。利用我们研究所提供的10台加速器，我们在光子辐照下进行了水和固体体模的输出测量。MOSFET探测器的性能符合制造商的规范，对于6 mV和18 mV的束流，平均偏差分别为2.1%和0.7%。探测器的强大设计，包括其无线设置、工厂校准和直接读出，使该系统成为一种可接受的独立质量保证装置，用于验证机器输出在+/-5%的精度内。MOSFET探测器提供对机器输出的快速检查，这可以有效地检测机器校准中的严重误差。
We investigated the applicability of single-use MOSFET detectors as quality-assurance devices. Using ten accelerators available at our institution, we performed output measurements in both water and solid phantoms under photon irradiation. The MOSFET detectors performed well within the manufacturer's specifications, with average deviations of 2.1% and 0.7% for the 6 and 18 MV beams, respectively. The strength of the detector's design, including its wireless set-up, factory calibration and direct read-out, makes the system an acceptable independent quality-assurance device for use in verifying machine output within an accuracy of +/- 5%. The MOSFET detectors provide a quick check of machine output, which can be efficacious in detecting gross errors in machine calibrations.