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单光子发射计算机断层扫描中由不均匀性引起的伪影。

Non-uniformity induced artifacts in single-photon emission computed tomography.

作者信息

Axelsson B, Israelsson A, Larsson S

出版信息

Acta Radiol Oncol. 1983;22(3):215-24. doi: 10.3109/02841868309134034.

DOI:10.3109/02841868309134034
PMID:6312761
Abstract

Changes of gamma camera uniformity due to choice of flood source configuration and camera head orientation, and influence of these changes on the reconstructed image, have been analysed using phantom measurements. The transfer of defects in the projection data to the reconstructed image has also been investigated using computer simulations. The results indicate that the use of gamma cameras for emission computed tomography will impose higher demands on gamma camera uniformity than conventional scintigraphy.

摘要

已通过体模测量分析了由于泛源配置和相机头方向的选择导致的γ相机均匀性变化,以及这些变化对重建图像的影响。还使用计算机模拟研究了投影数据中的缺陷向重建图像的传递。结果表明,与传统闪烁扫描法相比,将γ相机用于发射计算机断层摄影术对γ相机均匀性的要求更高。

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