摘要
多源静态CT的构架在临床医学精准诊疗领域有着广阔的应用前景。但其特殊几何结构衍生了有别于螺旋CT的几何尺寸误差标定、稀疏角重建等一系列实际问题。文章提出了一种基于双环结构(探测器环、射线源环)多源静态CT系统的几何校正。该系统的双环结构是探测器分布式排列为一圈,射线源分布式排列为一圈,射线源与探测器一一对应,增加了几何校正的难度。文章详细介绍了静态CT系统的系统设计以及基于该系统的几何校正方法。结果显示,该几何校正方法可以达到同水平螺旋CT成像标准,为深入研发临床应用打下坚实基础。
The architecture of multi-source static CT has broad application prospects in the field of precise diagnosis and treatment in clinical medicine.However,its special geometric structure leads to a series of practical problems,such as geometric error calibration and sparse angle reconstruction,which are different from spiral CT.This paper proposes a geometric correction of a multi-source static CT system based on a double-ring structure(detector ring,ray source ring).The double-ring structure of the system is that the detectors are distributed in a circle,the ray sources are distributed in a circle,and the ray sources and the detectors are in one-to-one correspondence,which increases the difficulty of geometric correction.The article introduces the system design of the static CT system and the geometric correction method based on the system in detail.The results show that the geometric correction method can reach the same level of spiral CT imaging standards,laying a solid foundation for further research and development of clinical applications.
作者
王程
崔志立
高建
Wang Cheng;Cui Zhili;Gao Jian(Nanovision Technology(Beijing)Co.,Ltd.,Beijing 100094,China)
出处
《无线互联科技》
2022年第16期145-147,共3页
Wireless Internet Technology
基金
北京市科技计划项目,项目编号:Z191100007619035。
关键词
多源静态CT
静态CT
全身扫描
几何校正
偏心校正
multi-source static CT
static CT
whole body scan
geometric correction
eccentricity correction
