中国医学装备2018，Vol.15Issue(3)：26-29,4.DOI:10.3969/J.ISSN.1672-8270.2018.03.007
五种弹性配准方法在放射治疗CT图像配准中的应用比较
Comparison on application of five kinds of elastic registration methods in the CT image registration of radiotherapy
庞皓文 1孙小杨 1杨波1
作者信息
- 1. 西南医科大学附属医院肿瘤科放疗室 四川 泸州 646000
- 折叠
摘要
Abstract
Objective: To compare the applications of five kinds of routine elastic registration methods included of Horn-Schunck optical flow method, Demons algorithm, accelerated Demons algorithm, level set algorithm and fast free deformation algorithm in radiotherapy. Methods: 10 patients who underwent radiotherapy on pelvic cavity were enrolled in the research. And their CT images at the time of location and during radiotherapy were collected, and the five kinds of routine elastic registration methods were applied in the research, and through autonomic programming to implement elastic registration, and then the registered results were further compared. Results: The average minimum mean square error (MSE) of five kinds of routine elastic registration methods have been decreased 6.7%-26.0%, and the average correlation coefficient(CC) has been increased 2.6%-3.7%, and the average registration time was 107.5s-220.8s. Conclusions: All of the five kinds of elastic registration methods get better results, and it is recommended to use Horn-Schunck optical flow method for elastic registration of radiotherapy CT. And through using elastic registration model can more accurate simulate the movement of organ, and it is a direction of further study that monitor individual dosage of organ at risk.关键词
弹性配准/放射治疗/应用比较/CTKey words
Elastic registration/Radiotherapy/Application comparison/X-ray computed tomograph分类
医药卫生引用本文复制引用
庞皓文,孙小杨,杨波..五种弹性配准方法在放射治疗CT图像配准中的应用比较[J].中国医学装备,2018,15(3):26-29,4.
