影像引导下立体定向放射治疗肺癌的初步临床实践

Image-guided Stereotactic Radiotherapy for Lung Cancer: Preliminary Clinical Practice

本研究回顾性分析了我院使用SBRT技术治疗的3例转移性肺癌的疗效、不良反应等,并对摆位误差进行记录。共有3例患者,4个病灶纳入分析。使用5 Gy×10次的处方剂量照射。结果表明,摆位误差头脚方向上的平均误差为(2.6±1.2)mm,前后方向为(4.6±4.5)mm,左右方向为(3.1±1.3)mm,经过在线CT校准,误差均被缩小至3 mm以内。随访4～13月,1例CR,1例PR,1例SD,未发现2级及以上的不良反应,晚期不良反应有待进一步随访。

This study retrospectively analyzed the treatment effect and side effects of 3 cases of metastatic lung cancer treated with SBRT technique in our hospital. We also recorded the position error. There patients and 4 lesions were included in the analysis. The prescription dose were 5 Gy×10 Fracitons. The results showed that the average error of the head direction of the pendulum error was（2.6±1.2） mm, and the front and back direction was（4.6±4.5） mm, and the left and right direction was（3.1±1.3） mm. After the online CT calibration, the error was reduced to within 3 mm. After 4-13 months＇ follow-up, 1 case CR, 1 case PR, 1 case SD, no side effects of stage 2 or above. The late side effects need further follow-up.