Unfolding Method with X-ray Path Length-Dependant Response Functions for Computed Tomography Using X-ray Energy Information
Unfolding Method with X-ray Path Length-Dependant Response Functions for Computed Tomography Using X-ray Energy Information
复制标题
利用 X 射线能量信息进行计算机断层扫描的 X 射线路径长度相关响应函数的展开方法
DOI：
10.1080/18811248.2010.9711672
复制
发表时间：
2010
影响因子：
1.2
通讯作者：
H. Onabe
中科院分区：
文献类型：
--
作者：
Ryo Imamura;Kenta Mikami;Yuko Minami;I. Kanno;Masahiko Ohtaka;M. Hashimoto;K. Ara;H. Onabe
用TransXend探测器测量X射线作为电流并给出相应的X射线能量信息的能量减法得到的CT(CT)值显示出CT值依赖于均匀体模的厚度的缺点。为了获得均匀材料的恒定CT值，提出了一种新的解折叠方法，该方法利用TransXend探测器的响应函数根据体模中的X射线路径长度而变化。讨论了用新的展开方法测量的CT值与展开过程中使用的能量范围、分段检测器的数目和分段检测器的衬底的关系。
The computed tomography (CT) values obtained by the energy subtraction method with a transXend detector, which measured X-rays as current and gave the corresponding X-ray energy information, show the disadvantage that the CT values are dependent on the thickness of a homogeneous phantom. In order to obtain constant CT values for a uniform material, a new unfolding method is proposed using variable response functions of the transXend detector according to the X-ray path length in the phantom. The CT values measured using the new unfolding method are discussed with respect to the energy range used in the unfolding process, the number of segment detectors, and the substrate of the segment detectors.