目的 探讨肝脏硬化性血管瘤的 CT、MRI影像学特征。方法 收集我院收 治的80例肝脏硬化性血管瘤患者临床资 料。所有患者首先接受CT扫描，层厚及层 间相隔5mm，CT扫描后进行重建，重建层 厚与层间距离为5mm，5例患者行增强扫 描，静脉注射典比乐60-75ml，动脉期后 行门脉期及延迟期扫描。CT扫描结束后， 静休4-5h，再接受MRI扫描。收集肝脏的 横断位T1WI、T2WI，并行脂肪抑制序列， 注射扎喷酸葡胺0.1mmol/kg，进行增强扫 描，参数同上，层厚约为6mm，图像采集 矩阵为256×256。结果 平扫结果显示， 所有病灶均为低密度，门脉期病灶未有强 化影像，延时扫描结果发现98%的病灶无 强化，2%病灶强化明显，不均匀强化。 MRI病灶部位：有96个病灶，其中85.42% 病灶在肝右叶，10.42%病灶在肝左叶， 3.13%在尾叶，3.13%在方叶。单发病灶有 78.13%，多发病灶有11.46%。25.00%的 肿瘤直径<2cm，5.21%肿瘤直径2-3cm， 97.29%肿瘤直径4-5cm，8.33%肿瘤直径 ＞5cm。边界不清T1WI低信号，T2wI则为 不均匀高、低混杂信号，且内部仍见低 信号区。MRI微小病灶检出率显著高于 CT(P<0.05)，误诊率低于CT(P<0.05)。结 论 肝脏硬化性血管瘤病灶多分布于肝右 叶，MRI较CT更能检出微小病灶，从而提 高肝脏硬化性血管瘤病灶检出率。

Objective To investigate the CT and MRI imaging features of hepatic sclerosing hemangioma. Methods The clinical data of 80 patients with hepatic sclerosing hemangioma admitted to our hospital were collected. All patients received the CT scan with 5mm slice thickness and reconstructed 5mm slice thickness, followed by the enhanced scan. After receiving intravenous injection of 60~75ml iopamidol, the enhancement pattern at hepatic arterial phase, portal venous phase and delayed phase were carried out. 4~5h later, patients received the MRI examinations. Thereafter, the appearance on the transversal T1WI and T2WI with and without fat suppression was obtained. Then the enhanced scan was performed after the injection of glucosamine glucosamine 0.1 mmol/kg with the same parameters as above, the thickness was 6mm and the matrix was 256×256. Results The plain scan showed that all lesions were of low density, and no enhanced image was found at the portal venous phase; While at the delayed phase, 98% of lesions were not enhanced, 2% lesions were unevenly enhanced. The MRI showed that there were 96 lesions, of which 85.42% lesions were located in the right lobe of the liver, 10.42% lesions were in the left lobe of the liver, 3.13% were in the caudate lobe and 3.13% were in the quadrate lobe. The single lesions were found in 78.13% and the 11.46% were multiple lesions. The tumor diameter of <2cm, 2~3cm, 4~5cm and >5cm accounted for 25.00%, 5.21%, 97.29% and 8.33%, respectively. The edge was unclear with low signal on T1WI and uneven mixed signal on T2WI. The detection rate of microcarcinoma was significantly higher in MRI than that of CT (P<0.05), and the misdiagnosis rate was lower than that of the CT (P<0.05). Conclusion The lesions of hepatic sclerosing hemangioma are mostly distributed in the right lobe of the liver. Compared with the MRI, the CT has high detection rate of the microcarcinoma.