肝脏小血管瘤的螺旋CT四期表现及评价  

Small Hepatic Hemangioma:an evaluation of 4-phase Spiral CT findings

作　　者：张广源[1] 黄士强[1] 关惠英[1] 陈世稳[1] 

机构地区：[1]广东省开平市中心医院放射科,广东开平529300

出　　处：《海南医学》2008年第5期7-8,20,共3页Hainan Medical Journal

摘　　要：目的研究肝脏小血管瘤螺旋CT四期表现并进行评价。方法40例经手术和MR检查及病理确诊的肝脏小血管瘤进行回顾分析。结果40例患者共发现48个病灶,67%(32/48)具有公认典型血管瘤强化表现,25%(12/48)通过四期表现分析可以明确诊断,8%(4/48)四期扫描不能确诊。平扫48个病灶均为低密度。增强后动脉期扫描32(67%)个病灶边缘部强化,12(25%)个均匀显著强化,4(8%)个病灶不强化。门脉期32(67%)个病灶均匀强化,12(25%)个病灶强化范围由边缘向中央部扩大,4(8%)个病灶不强化,平衡期和延迟期44(92%)个病灶呈等密度,4(8%)个病灶不强化。结论肝脏小血管瘤的螺旋CT四期增强扫描表现具有典型和非典型改变,认识这些表现,可以与肝脏的其他常见占位性病变鉴别。Objective To study and evaluate the 4-phase spiral CT manifestations of the hepatic small hemangioma. Methods 40 cases hemangioma, diagnosed by operation or CT or MRI, were analyzed retrospectively. Results There were 48 lesions in all the 40 patients, 67% of these had typical enhanced aspects, 25% were diagnosed by 4 -phase enhanced scanning, besides 8% atypical cases. In unenhanced scan, 47 lesions were homogenous hypo-attenuation in hepatic parenchyma, and 1 lesion was equal with hepatic parenchyma. After the contrast media was injected, the peripheral enhancement was revealed in 32 lesions in arterial phase and completed enhancement in 12 lesions, while unenhancement in 4 lesions. In portal venous phase the enhancement involved the tumors from periphery to the center was revealed in 32 lesions and completed enhancement in 12 lesions, while unenhancement in 4 lesions. In delayed images, filled-in was completed in 44 lesions, while unenhancement was in 4 lesions. Conclusion The four-phase spiral CT manifestations of the hepatic small hemangioma were typical and atypical characteristic, which may help differentiating the hepatic small hemangioma from other liver neoplasms.

关 键 词：海绵状血管瘤 肝 体层摄影术 X线计算机 四期扫描 

分 类 号：R814.42[医药卫生—影像医学与核医学]