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后装机治疗 (brachytherapy)是将封装好的放射源 ,通过施源器或输源导管 ,用计算机将放射源植入患者的肿瘤部位进行照射治疗的 1种方法。由于放射源贴近肿瘤组织 ,源的到位精度及到位重复性直接影响肿瘤的辐射剂量分布。后装机1 92 Ir源的到位精度及重复性也是常规质量控制 (QC
Brachytherapy (brachytherapy) is a packaged radioactive source, through the source device or the source catheter, the computer will be the source of radioactive tumor implantation in patients with a method of irradiation treatment. Due to the proximity of the radioactive source to the tumor tissue, the accuracy of the source in place and the repetitiveness in place directly affect the radiation dose distribution of the tumor. Post-installed 1 92 The accuracy and repeatability of the Ir source are also routine quality control (QC