肝细胞癌与腹主动脉强化峰值时间的相关性

Correlation of the time to peak enhancement between hepatocellular carcinoma and abdominal aorta

目的探讨肝细胞癌强化峰值时间与腹主动脉强化峰值时间的相关性。方法对43例确诊为肝细胞癌的患者,应用64层螺旋CT行常规肝脏平扫,选取肿瘤最大径层面,再以该层面为中心行持续动态增强扫描,取肿瘤强化最高区域和同层面腹主动脉中心分别作为感兴趣区(ROI),绘制二者的时间-密度曲线(TDC)并计算其强化峰值时间。结果43例患者肝细胞癌的强化峰值时间为(30.04±6.36)s,腹主动脉的强化峰值时间为(23.38±4.92)s;肝细胞癌的强化峰值时间与腹主动脉的强化峰值时间呈正线性相关(r=0.662,P<0.05);肝细胞癌的强化走势有三种形式,23.26%与腹主动脉相似。结论肝细胞癌的强化峰值时间与腹主动脉的强化峰值时间具有一定的相关性。

Objective To assess the correlation between the time to peak enhancement of hepatocellular carcinomas （HCC） and the aorta at 64 slice CT. Methods Forty-three patients with HCC underwent dynamic abdominal CT examination. The region of interest （ROD was located at HCC and abdominal aorta, respectively. The time-density curves （TDC） of the HCC and the aorta were drawn. The time to peak enhancement of the HCC and the aorta were recorded, and the correlation between the time to peak enhancement of the HCC and the aorta was analyzed. Results The time to peak enhancement of the aorta and the HCCwere （23.38±4.92）sand （30.04±6.36）s, respectively. The time to peak enhancement of theHCCwas positively and linearly correlated with the time to peak aortic enhancement （r=0. 662, P〈0.05）. There were 3 types of the enhancement of HCC, only 23.26% of which was similar to the aorta. Conclusion The time to peak enhancement of the a orta and the HCC has substantial relationship.