原发性肝癌的螺旋CT三期增强特征及其诊断价值

目的：探讨肝癌螺旋CT多期扫描影像特征和临床应用价值。方法：对拟诊为肝癌的56例患者先行全肝CT平扫,其中46例不论肿瘤大小先作病灶动脉期扫描,再作全肝静脉期扫描,最后进行病灶延迟扫描。10例仅行动脉期及静脉期扫描。结果：56例中37例为巨块型,10例为结节型,10例为弥漫型。46例中CT平扫、动脉期、静脉期及延迟期病灶的显示率分别为89%、98%、92%、98%。结论：螺旋CT三期扫描能获得肿瘤在各期增强征象,为肝癌的定性定量诊断提供更多的影像诊断信息;尤其在早期肝癌诊断,动脉期扫描可得到非常重要的诊断依据。

The value of three-phase helical CT in the diagnosis of hepatocellular carcinoma

Objective： To study the clinical application value of three-phase helical CT scan in describing the chameterisdos of hepato- cellular eareinoma （HCC）. Methods：Precontrast CT scan was performed on 56 fiver cancer patients, of which 46 patients （including 11 nodular type） finished arterial, venous and equilibrium phase CT scan, and the other 10 cases were only perform ed with arterial, venous phase CT scan.Results：In the 56 cases, 37 cases showed a dominant mass, 10 eases were nodular type HCC, and 10 eases were diffuse type HCC. The percentage of clearly displayed HCC of 46 patients in precontrast CT scan, arterial, venous and equilibrium phase CT scan were 89%, 98%, 92%, and 98%, respectively. Conclusion：Three-phase helical CT scan could acquire truly the enhanced signs in each s of tumors in each phase, and could provide more inform action about qualitative and quantitative diagnosis of HCC. Especially in the early stage of the HCC, the arterial phase CT Scan could give the most important evidence for diagnosis.