Geometric Sensitivity of a Pinhole Collimator.
Geometric Sensitivity of a Pinhole Collimator.
复制标题
针孔准直器的几何灵敏度。
DOI：
10.1155/2010/915958
复制
发表时间：
2010
影响因子：
1.2
通讯作者：
Metzler,ScottD
中科院分区：
文献类型：
--
作者：
Jacobowitz,Howard;Metzler,ScottD
单光子发射计算机断层扫描（SPECT）的几何灵敏度是由检测平面上的二重积分给出的。能够明确地评估这个数量将是有用的。本文表明，在针孔孔径周围材料没有伽马射线穿透的情况下，可以计算内积分。这是通过将积分转换为复平面上的积分，并使用柯西定理将其替换为可以根据椭圆函数计算的积分来完成的。
Geometric sensitivity for single photon emission computerized tomography (SPECT) is given by a double integral over the detection plane. It would be useful to be able to explicitly evaluate this quantity. This paper shows that the inner integral can be evaluated in the situation where there is no gamma ray penetration of the material surrounding the pinhole aperture. This is done by converting the integral to an integral in the complex plane and using Cauchy′s theorem to replace it by one which can be evaluated in terms of elliptic functions.