192Ir高剂量率后装治疗剂量准确性的质量控制
Quality control of 192Ir high dose rate afterloading brachytherapy dose veracity
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摘要: 目前,192Ir高剂量率后装治疗技术应用越来越广泛。与其他低剂量率放射源相比,用它进行后装治疗时间短、分次剂量高。为确保治疗剂量的准确性,介绍了一些对治疗机位置精度、时间精度和剂量精度进行质量控制的要求和方法。Abstract: Recently, 192Ir high dose rate(HDR) afterloading are widely used in brachytherapy. The advantage of using HDR systems over low dose rate systems are shorter treatment time and higher fraction dose. To guarantee the veracity of the delivery dose, several quality control methods are described in this work. With these we can improve the position precision, time precision and dose precision of the brachytherapy.
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Key words:
- Iridium radioisotope /
- Brachytherapy /
- Radiation dosage /
- Quality control
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