slice thickness 层面厚度
- 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。 - Methods:CT slice thickness for 2 sets of computed tomography was measured using automated software, and the related parameters were analyzed.
方法:利用计算机辅助测试软件对2台CT设备的层厚进行自动测试,分析了自动测试的相关因素。 - The CT quality control phantom was employed to analyze the stair step artifact. Helical scan was done with different slice thickness, pitch, increment and phantom position.
采用螺旋扫描方式,对CT质控模体进行扫描,分别改变层厚、螺距、重建间隔和模体位置,对阶梯状伪影进行分析。
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