Sensitivities for contrast agent imaging in CT scans using single energy synchrotron radiation
Sensitivities for contrast agent imaging in CT scans using single energy synchrotron radiation
复制标题
使用单能同步辐射的 CT 扫描中造影剂成像的灵敏度
DOI：
10.1016/0168-9002(90)91586-z
复制
发表时间：
1990
影响因子：
1.4
通讯作者：
J. Fryar
中科院分区：
文献类型：
--
作者：
K. McCarthy;J. Fryar
两种基本方法可用于使用同步加速器或其他单色辐射对CT中的元素进行成像。通过在吸收边缘上切换X射线束的能量，可以产生图像，无论在扫描基质之后是否可以将分析物添加到基质中。如果可以扫描基质，然后添加分析物，如在一些使用造影剂的研究中，则不需要在扫描之间改变X射线束的能量。研究了在这种情况下元素成像的灵敏度，推导出了最小可检测分析物浓度的方程。
Two basic methods are available for the imaging of elements in CT using synchrotron or other monochromatic radiation. By switching the energy of the X-ray beam across an absorption edge, images can be produced whether or not the analyte can be added to the matrix after a scan of the matrix. If the matrix can be scanned and then the analyte added, as in some studies using contrast agents, the energy of the X-ray beam does not need to be changed between scans. A study is made of the sensitivity for elemental imaging in such cases and an equation which gives the minimum detectable analyte concentration is derived.