Objective: To evaluate the manifestations of liver metastasis by spiral ct with three-phase scanning.
前言：目的：分析肝转移瘤三期螺旋CT扫描的影像表现，并评价其诊断价值。
Methods Dual phase scanning of the liver in 98 patients with lesions was carried out with a helical CT scanner.
方法对98例肝内占位性病变的病人进行螺旋CT双期增强扫描。
Make the ruling experiments for VLS grating using the phase scanning method. Analyze the ruling error primarily.
采用相位扫描方法进行了变栅距光栅的刻划实验，并对刻划误差进行了初步的分析。
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