CTvision技术在头颈部肿瘤放射治疗摆位中的应用

Application of CTvision technology in positioning of head and neck cancer radiotherapy

目的:评估CTvision技术对头颈部肿瘤放射治疗摆位的影响及应用价值。方法:对20例头颈部肿瘤患者放疗前采用CTvision完成放疗计划的图像采集,将CTvision扫描图像与CT平扫定位图像匹配,评估放疗摆位误差。结果:头颈部摆位误差:X(-0.02±0.14)cm,Y(-0.01±0.23)cm,Z(0.02±0.11)cm。结论:治疗前获取的即时图像,可以减少分次治疗间摆位误差,提高放疗的摆位精度,保证治疗计划的精确实施。

Objective：To evaluate the effect and application of CTvision in radiotherapy position of head and neck cancer.Methods：Before radiotherapy,20 cases of head and neck cancer patients received CTvision image and matched with CT simulation image,evaluating radiotherapy setup errors.Results：The accuracy of head and neck cancer post adjustment were X（-0.02±0.14）cm,Y（-0.01±0.23）cm,and Z（0.01±0.11）cm.Conclusion：Using CTvision before treatment can decrease positioning errors and increase positioning precision,to ensure accurate implementation of treatment plan.