Sheridan W T, Keller M R, O'Connor C M, Brooks R A, Hanson K M
Med Phys. 1980 Mar-Apr;7(2):108-11. doi: 10.1118/1.594673.
A phantom is presented which permits the evaluation of streaking artifacts produced in CT reconstructions by abrupt edges. Its application is demonstrated by results obtained from nine CT scanners. It is observed that even in regions where streaking is not readily apparent, edge-induced artifacts can significantly increase the variance in the reconstruction.
本文介绍了一种体模，它可以评估CT重建中由陡峭边缘产生的条纹伪影。通过九台CT扫描仪获得的结果展示了其应用。据观察，即使在条纹不太明显的区域，边缘诱导的伪影也会显著增加重建中的方差。
