一种用于具有均匀衰减校正的斜缝准直器单光子发射计算机断层扫描的分析算法。
An analytical algorithm for skew-slit collimator SPECT with uniform attenuation correction.
作者信息
Tang Qiulin, Zeng Gengsheng L, Huang Qiu
机构信息
Department of Physics, University of Utah, Salt Lake City, UT 84112, USA.
出版信息
Phys Med Biol. 2006 Dec 7;51(23):6199-211. doi: 10.1088/0031-9155/51/23/018. Epub 2006 Nov 9.
Abstract
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.
摘要
为了替代传统的针孔（常规锥束）准直器，之前提出了一种新型斜缝准直器，并开发了一种诺维科夫型算法来使用斜缝几何结构重建图像。本文的目标是开发一种比诺维科夫型算法具有更好噪声控制的重建算法。新算法能够补偿均匀衰减，计算机模拟结果表明重建图像的噪声更小。
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