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目的:探讨螺旋CT三期增强扫描在肝血管瘤中的影像特点及诊断价值。方法:搜集46例肝血管瘤患者在螺旋CT平扫后进行螺旋CT三期增强扫描的资料。扫描范围为全肝;层厚为5mm~8mm,pitch=1.2,对比剂为优维显(300mgI/ml),采用单相期团注法注入剂量为80ml~100ml,流速2.5ml/s~3.5ml/s。延迟时间:动脉期(HAP)延迟25s~30s、门静脉期(PVP)延迟65s~70s、延迟期延迟3min~10min。结果:动脉期强化病灶49个(84.5%),门脉期对比剂逐渐向病灶中心充填,9个无明显强化病灶开始强化。延迟扫描见造影剂进一步向病灶中心填充,48个病灶(82.6%)完全填充为等密度,其余10个(17.2%)病灶部分充填。结论:肝血管瘤螺旋CT三期增强的各期大多数有典型特点,在诊断及鉴别诊断中具有重要的价值。
Objective: To investigate the imaging features and diagnostic value of three-phase enhanced spiral CT in hepatic hemangiomas. Methods: The data of 46 patients with hepatic hemangiomas who underwent helical CT three-phase enhanced scan after spiral CT scan were collected. The scanning range was whole liver; the layer thickness was 5mm ~ 8mm, pitch = 1.2, the contrast agent was Uvoxian (300mgI / ml), and the dosage was 80ml ~ 100ml ml / s. Delay time: arterial phase (HAP) delay 25s ~ 30s, portal vein (PVP) delay 65s ~ 70s, delayed delay 3min ~ 10min. Results: During the arterial phase, 49 lesions were enhanced (84.5%). The contrast agent in the portal phase was gradually filled into the focus of the lesion, and nine lesions without obvious enhancement began to strengthen. Delayed scan revealed that the contrast medium was further filled into the focus of the lesion, 48 lesions (82.6%) were completely filled with equal density, and the remaining 10 lesions (17.2%) were partially filled. CONCLUSION: Most of the three stages of hemangiomas with helical CT are typical features, which are of great value in the diagnosis and differential diagnosis.