螺旋CT三期增强扫描在肝血管瘤诊断中的价值分析

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。

The Value of 3-phase Contrast-enhanced Spiral CT Scanning in Diagnosing Hepatic Hemangioma

Objective To investigate the imaging features of 3-phase contrast-enhanced spiral CT scanning and the value of diagnosis in hepatic hemangioma. Methods 50 cases of hepatic hemangioma scanned by 3-phase contrast-enhanced spiral CT after common scan . Scan region: whole hepatic, thickness 5 mm~8 mm, p=1.2; all used single phase to inject Ultravist (300 mgI/l) 80 ml~100 ml, injected rate 2.5 ml/s~3.5 ml/s.delayed time: hepatic arterial phase,25 s~30 s,portal venous phase,65 s~70 s,delayed phase 3 min~10 min. Results 49/58(84.5%) of hepatic hemangiomas had potentialization at hepatic arterial phase (HAP), and centripetal oriented enlargement of the regions at portal venous phase (PVP), 9 hepatic hemangiomas begin potentialization. In delayed phase, 48/58(82.6%) of the hepatic hemangiomas showed completely homogenenous patentialization or iso-density filling, others 10/58(17.2%) presented part filling. Conclusion majority hepatic hemangiomas have typical exhibition in 3-phase contrast-enhanced spiral CT scanning,and the 3-phase contrast-enhanced spiral CT scanning has an important value for the diagnosis of hepatic hemangiomas and compare with primary liver cancer.