中国医疗设备2018，Vol.33Issue(5)：90-92,3.DOI:10.3969/j.issn.1674-1633.2018.05.024
射波刀放疗中相关螺旋CT定位条件的探讨
Discussion of the Location Conditions of Spiral CT in Cyberknife Radiotherapy
陈国梁 1赵瑞 1李俊杰 1李莎1
作者信息
- 1. 解放军兰州总医院 放疗科,甘肃 兰州 730050
- 折叠
摘要
Abstract
Objective To investigate the location conditions of spiral CT in Cyberknife radiotherapy. Methods Siemens big bore 64 slice spiral CT was used to scan the chest tumor phantom with different pitch and reconstruction slice thickness. The tumor phantom volume, length and CT value with the software of Siemens CT workstation was measured and the changes of the tumor volume, length and CT value was observed. Results Different scanning pitch had no effect on tumor volume, tumor length and CT value. The tumor volume and CT value decreased with the increase of the thickness of the reconstructed layer. The tumor size increased with the thickness of the reconstructed layer. When the slice thickness was more than 1.5 mm, the tumor volume was significantly decreased with the thickness of the reconstructed layer. When the reconstruction slice thickness was 5 mm, the tumor volume changeed up to 23%. Conclusion In order to ensure the quality of cyberknife radiotherapy, the CT location condition should be executed strictly in cyberknife locating requirements.关键词
射波刀/放射治疗/重建层厚/螺距/肿瘤Key words
cyberknife/radiotherapy/reconstruction slice thickness/pitch/tumor分类
医药卫生引用本文复制引用
陈国梁,赵瑞,李俊杰,李莎..射波刀放疗中相关螺旋CT定位条件的探讨[J].中国医疗设备,2018,33(5):90-92,3.
