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目的：评价螺旋ＣＴ全肝双期动态扫描动脉期、门脉期对肝细胞癌的诊断价值。材料和方法：搜集４３例经活检、手术、血管造影证实的肝细胞癌全肝双期螺旋ＣＴ扫描资料，逐一对比动脉期、门脉期ＣＴｒ影像。结果：①双期扫描动脉期能充分反映肝细胞癌血供特点，瘤灶强化率达８８。４％（３８／４３）。②平扫边缘清楚的肿瘤，双期显示肿瘤边缘部三种形态的包膜。以动脉期显示率最高，③平扫边缘不清的肿瘤，动脉期瘤灶大小与平扫基本符合，门脉期多数有缩小，动脉期能更真实地反映肿瘤范围，④显示肿瘤肝内、外扩散双期优于单期。结论：螺旋ＣＴ全肝双期动态扫描更能全面显示肝细胞癌影像特征并更贴切反映其病理学基础。
OBJECTIVE: To evaluate the diagnostic value of hepatic carcinoma in arterial phase and portal vein phase with spiral CT whole liver dynamic scan. Materials and Methods: CT scans of hepatic carcinoma of the liver confirmed by biopsy, surgery, and angiography were performed in 43 patients. The CTr images of arterial phase and portal vein were compared one by one. Results: 1 The biphasic scan of arterial phase can fully reflect the characteristics of hepatocellular carcinoma blood supply, and the tumor enhancement rate was 88.4% (38/43). 2 Plainly scan the tumors with well-defined margins, and double-phasely display three types of envelopes at the edge of the tumor. The arterial phase showed the highest rate, 3 plain scan margins unclear tumors, arterial phase tumor size basically consistent with the plain scan, the majority of the portal phase is reduced, the arterial phase can more truly reflect the extent of the tumor, 4 shows the tumor intrahepatic, Outward diffusion is better than single period. Conclusion: Spiral computed tomography double-phase dynamic scanning can more fully display the image features of hepatocellular carcinoma and reflect its pathological basis more closely.