The geometric error of axial image reconstruction increases with the increase of CT scan slice thickness, due to CT partial volume effect.
重建CT图像的前后方向的几何误差是随着扫描层厚增加而增加，主要是由于CT扫描的部分容积效应影响。
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Objective To evaluate the diagnostic value of the multi-slice ct urography (CTU) in ureteral carcinoma by means of analyzing axial ct and CTU features.
Methods the 42 patients were checked for use of 16-slice helical CT, the images passed on an independent workstation for MPR and SSD technique, and compared with axial 2d imaging of CT.