摘要
目的:探讨射波刀颅骨追踪俯卧位与仰卧位治疗精度的差异,为射波刀颅骨追踪俯卧位治疗提供理论依据。方法:分别对安装有EBT3免冲洗胶片的头颈模体采用俯卧位与仰卧位进行CT扫描、计划设计和模拟射波刀治疗。采用E2E软件分析曝光后的EBT3免洗胶片,对比射波刀颅骨追踪俯卧位与仰卧位治疗精度。结果:头颈模体俯卧位与仰卧位的治疗精度分别为0.81和0.72 mm,均满足ACCURAY公司提供的0.90 mm的治疗标准,两者治疗精度仅差0.09 mm,可认为头颈模体颅骨追踪俯卧位与仰卧位具有同等的照射精度。结论:当患者无法进行仰卧位颅骨追踪射波刀治疗时,可以采用俯卧位颅骨追踪方式进行治疗。
Objective To compare the differences in skull tracking accuracy between prone and supine positions in Cyberknife treatment, and to provide the theory basis for Cyberknife treatment in prone position for skull tracking. Methods CT scans were performed, and the treatment plans were designed and executed for the head and neck phantom with EBT3 film in prone and supine positions, respectively. The EBT3 films after exposure were analyzed with E2 E software to compare the Cyberknife treatment accuracy between prone and supine positions for skull tracking. Results The treatment accuracies for head and neck phantom in prone and supine positions were 0.81 and 0.72 mm, respectively, better than the treatment standard provided by ACCURAY company（0.90 mm）. The treatment accuracy difference between prone and supine positions was only 0.09 mm,therefore, the treatment accuracies of prone and supine positions were considered equal. Conclusion When patients cannot receive Cyberknife treatment for skull tracking in supine position, Cyberknife treatment can be applied for patients in prone position.
出处
《中国医学物理学杂志》
CSCD
2017年第8期790-793,共4页
Chinese Journal of Medical Physics
关键词
射波刀
颅骨追踪
俯卧位
仰卧位
治疗精度
Cyberknife
skull tracking
prone position
supine position
treatment accuracy
