An analytical algorithm for skew-slit collimator SPECT with uniform attenuation correction.
An analytical algorithm for skew-slit collimator SPECT with uniform attenuation correction.
复制标题
具有均匀衰减校正的斜缝准直器 SPECT 的分析算法。
DOI：
10.1088/0031-9155/51/23/018
复制
发表时间：
2006
影响因子：
3.5
通讯作者：
Huang,Qiu
中科院分区：
文献类型：
--
作者：
Tang,Qiulin;Zeng,GengshengL;Huang,Qiu
为了取代传统的针孔（正常锥束）准直器，一种新的斜缝准直器先前提出了一种Novikov型算法开发使用斜缝几何重建图像。本文的目标是开发一种重建算法，具有更好的噪声控制比Novikov型算法。新算法能够补偿均匀衰减，计算机仿真结果表明，重建图像噪声较小。
To replace the conventional pinhole (normal cone-beam) collimator, a novel skew-slit collimator was previously proposed and a Novikov-type algorithm developed to reconstruct images using the skew-slit geometry. The goal of this paper is to develop a reconstruction algorithm that has better noise control than the Novikov-type algorithm. The new algorithm is able to compensate for uniform attenuation, and computer simulation results show that reconstructed images are less noisy.