【摘要】 目的 :研究螺旋CT三期扫描对肝脏肿瘤的检出率及诊断价值。方法 :选择经B超、MR、CT联合检查及病理证实 (手术及穿刺 )的病例 15 6例 ,病灶 34 0个 ,采用CT用非离子型造影剂 ,每人造影剂用量 10 0～ 12 0mL ,注射速率 (2 5～ 3 5 )mL/s ,动脉期延迟 2 0～ 30s ,门静脉期延迟 60～ 90s ,延迟期(平衡期 )延迟 2 4 0～ 360s。结果 :动脉期显示 2 65 (77 94 % )个病灶 ,门静脉期显示 2 0 4 (60 % )个病灶 ,延迟期显示 2 39(70 2 9% )个病灶 ,三期综合显示 32 3(95 % )个病灶。总正确诊断率 95 4 8%。结论 :CT三期扫描在肝脏肿瘤性病变的检出率及正确诊断明显高于单期相扫描和双期扫描更多还原

【Abstract】 Objective To evaluate the sensitivity and the value in diagnosis of liver neoplasm with three phase SCT scan.Methods 156 patients (340 lesions) with liver neoplasm confirmed by pathologically were included in this study.US,MRI and SCT scan were performed in all patients.The SCT scan started at 20-30 s (arterial phase),60-70 s (portal venous phase) and 240-360 s (delayed phase) after nonionic contrast medium injected introvenously (rate 2 5-3 5 mL/s,volume 100-120 mL per persion).Results 265 (77 94%) lesions were found at arterial phase,204(60%) lesions at portal venous phase and 239(70 29%) at delayed phase.Three phase SCT scan showed 323(95%) lesions totally.The accuracy of detection of liver neoplasm in three phase SCT scan was 95 48%.Conclusion The sensitivity and the accuracy of detection of liver neoplasm in three phase SCT scan are better than that in single phase or dual phase.更多还原