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目的 研究小肝癌 (SHCC)在螺旋CT三期 (动脉期、门脉期和延迟期 )增强扫描的表现 ,比较各期的病灶检出率 ,提高诊断水平。方法 70例SHCC患者行平扫及增强扫描 ,造影剂注射速率为 3ml/s ,然后开始动脉期、门脉期和延迟期的扫描。统计各期的病灶检出数 ,观察病灶在不同时期的特征。结果 共发现 82个病灶 ,动脉期、门脉期和延迟期的检出率分别为 92 .68% ,70 .73 %和 73 .17%。动脉期的敏感性高于延迟期和门脉期。三期联合检出率明显增加达 95 %。结论 SHCC增强扫描表现形式复杂 ,螺旋CT三期扫描可以充分显示SHCC各期的增强表现 ,正确评价其血流变化 ,提高了病灶的检出率和诊断的准确率
Objective To study the performance of small-cell carcinoma of the liver (SHCC) in enhanced spiral CT in the third phase (arterial phase, portal phase and delayed phase) and to compare the detection rate of each phase and improve the diagnostic level. Methods Seventy patients with SHCC underwent plain and enhanced scanning. The contrast agent injection rate was 3ml / s. The arterial phase, portal phase and delayed phase scanning were started. Statistics of the number of lesions detected in each period, observe the characteristics of lesions in different periods. Results A total of 82 lesions were detected. The detection rates of arterial phase, portal phase and delayed phase were 92.68%, 70.73% and 73.17% respectively. Arterial phase sensitivity than the delay and portal phase. Three joint detection rate increased significantly by 95%. Conclusions The enhancement manifestations of SHCC are complicated. Three-phase spiral CT can fully show the enhanced manifestations of SHCC, correctly evaluate the changes of blood flow, improve the detection rate of lesions and the accuracy of diagnosis