螺旋CT多期增强扫描诊断小肝癌的价值

目的 :分析小肝癌的螺旋CT多期增强扫描的表现特征 ,评价其应用价值。材料和方法 :2 1例经手术病理或临床证实的小肝癌患者 ,全部接受螺旋CT多期增强扫描检查 ,以双盲法分析其各期的CT表现。结果 :2 1例共发现 2 4个病灶。平扫呈低密度或等密度 ;肝动脉期 87.5 %均匀或不均匀增强 ,12 .5 %无明显增强 ;门脉期均呈低或稍低密度 ;延迟扫描全部为低密度。病灶密度变化的主要形式是“低—高—低—低”的模式。结论 :多期螺旋CT增强扫描能反映小肝癌的血供变化特点 ,从而为准确诊断提供了可靠的影像学依据

The Value of Multi-phase Helical CT in the Diagnosis of Early Hepatocellular Carcinoma

Purpose: To analyze the characteristics of early hepatocellular carcinoma with multi phase helical CT, and assess the value of this method. Materials and methods: Multi phase helical CT findings were independently reviewed in a double blind method by radiologists. Results: Altogether 24 lesions were found in 21 cases. In plain CT the lesions were hypodense or isodense areas. After contrast enancement, 87.5% of lesions showed regular or irregular hyperdense enhancement while 12.5% demonstrated tumor vessels within the lesions during arterial phase, then they became hypodense or isodense nodules during portal phase, and all to be hypodense during delay phase. The prevalence model of density changes was low, hyper, low and low density pattern. Conclusion: Multi phase helical CT could reflect the blood supply of the early hepatocellular carcinoma, it is reliable method for the diagnosis of the disease.