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目的：本文目的是确立快速动态增强ＣＴ对恶性肝肿瘤的诊断价值。材料和方法：有快速动态增强ＣＴ检查的３０例肝恶性肿瘤病人同平扫和延迟扫描进行回顾性比较研究。结果：平扫ＣＴ肿瘤呈低密度２２例，等密度８例。快速动态增强ＣＴ显示肿瘤２９例，１例肿瘤呈等密度强化。延迟扫描显示肿瘤２７例，３例肿瘤呈等密度强化。结论：对门静脉瘤栓、肿瘤包膜和原发肿瘤显示上，增强ＣＴ显示优于平扫，我们认为快速动态增强ＣＴ与平扫ＣＴ和延迟扫描比是发现肝肿瘤最敏感的方法，应该成为标准ＣＴ检查方法。
Objective: The purpose of this article is to establish the diagnostic value of rapid and dynamic contrast-enhanced CT in malignant liver tumors. Materials and Methods: A retrospective comparative study of 30 patients with hepatic malignancy who underwent rapid dynamic contrast-enhanced CT scans with plain and delayed scans. Results: Plain CT tumors showed low density in 22 cases and equal density in 8 cases. Fast dynamic contrast-enhanced CT showed 29 cases of tumors, and 1 case of tumors showed equal density enhancement. Delayed scanning showed tumors in 27 cases, and 3 tumors showed equal density enhancement. CONCLUSIONS: Enhanced CT is superior to plain scan in the visualization of portal vein tumor thrombi, tumor capsules, and primary tumors. We believe that the ratio of rapid dynamic contrast-enhanced CT to unenhanced CT and delayed scan is the most sensitive method for detecting liver tumors and should become Standard CT examination method.