小肝癌CT增强动脉期时间密度曲线特征及其病理分析  

The Characteristics of the Time-density Curve and Pathological Analysis of the SHCC in the Arterial Phase of CT Scan

作　　者：涂备武[1] 周康荣[2] 

机构地区：[1]上海411医院放射科,上海200081 [2]复旦大学中山医院放射科

出　　处：《实用放射学杂志》2005年第9期926-928,976,共4页Journal of Practical Radiology

摘　　要：目的分析SHCC动脉期强化的特征和原因。方法动脉期均做同层动态扫描。测量病灶、肝动脉和肝实质的CT值作时间密度曲线图。再测其开始强化、强化峰值及病灶最佳强化时间。结果病灶与肝实质曲线的关系有3种:①2次交叉者(73%)。病灶强化曲线上升超过肝实质形成第1交叉,由顶点下降到低于后者形成第2交叉。②没有第2次交叉者(19.2%)。③曲线始终位于肝实质曲线以下者(7.7%)。结论SHCC在(21.6±6)s开始强化,最佳强化时间是(36±8)s,持续时间为30.9(6～46)s。引起不强化常见原因是坏死。Objective To analyze the time - density curve of the small HCCs in the arterial phase and to find out its unique features. Methods All lesions were imaged with single - level serial SCT. The attenuations of the lesion,hepatic artery and hepatic parenchyma were measured. The time - density curve was built with these CT values and their corresponding times. Results The time - density curves of the lesion and liver parenchyma were divided into three kinds：the first kind had two intersects （73% ）. The first one was seen at the time when the curve of the lesion went up over the one of the parenchyma and the second was seen at the point the curve came down below the parenchyma＇ s. There was no second intersecting point in the second type（ 19.2% ） and the curve of the lesion was below that of the parenchyma in the third （7.7% ）. Conclusion The initial time of the enhancement of small SHCC is （21.6 ± 6 ） s. The optimal time of the enhancement of SHCC is （36±8） s.

关 键 词：小肝癌 体层摄影术 X线计算机 增强 动脉期 

分 类 号：R735.7[医药卫生—肿瘤] R814.42[医药卫生—临床医学]