论文部分内容阅读
目的探讨腹部肿瘤锥形束计算机断层扫描(CT)图像引导放射治疗的最优图像配准方法。方法选取收治的腹部肿瘤患者18例,在线引导下均行千伏特锥形束CT(KVCBCT)体位校正,收集校正图像,分别采用基于灰度自动配准、骨性结构自动配准、人工图像配准及自动+手动配准方法对计划CT图像及KVCBCT图像配准,选择与评价最优配准方法。结果与其他配准方法比较,自动+手动配准方法图像配准评分较高,配准较准确,差异有统计学意义(P<0.05)。结论腹部肿瘤在线引导下以自动+手动配准方法配准度较高,且重复性较强,临床值得普及。
Objective To investigate the optimal image registration method for pyramidal tract computed tomography (CT) image guided radiotherapy of abdominal tumors. Methods Totally 18 patients with abdomen tumor were enrolled in this study. The KVCBCT was performed under the guidance of the line, and the corrected images were collected. The images were automatically graded based on grayscale automatic registration, bony structure automatic registration, Quasi-automatic + manual registration method for planning CT images and KVCBCT image registration, selection and evaluation of the optimal registration method. Results Compared with other registration methods, the auto + manual registration method had higher image registration score and more accurate registration, the difference was statistically significant (P <0.05). Conclusion The online registration of abdominal tumor with automatic + manual registration method with a high degree of registration, and repeatability, clinically worthy of popularity.