乙肝肝硬化背景小肝癌CT与MRI强化特征的比较分析

Comparative Analysis of CT and MRI Enhanced Features of Background Small Hepatocellular Carcinoma with Hepatitis B Cirrhosis

目的:观察CT与MRI强化检查乙肝肝硬化背景的小肝癌(SHCC)特征。方法:取本院收治SHCC者56例,均行增强CT、MRI检查,观察病灶检出率、病灶-肝脏对比率、相对强化率、时间-密度/信号强度曲线类型、病灶假包膜显示率。结果:(1)两种检查方式SHCC病灶检出率比较无意义(P>0.05);(2)增强CT检查各期TLCR低于增强MRI检查(P<0.05);(3)增强CT检查动脉期、平衡期rER低于增强MRI检查(P<0.05);两种方式门静脉期rER无意义(P>0.05);(4)增强CT检查速升缓降型率低于MRI检查,增强CT检查速升速降型率高于增强MRI检查(P<0.05);两种检查方式缓慢上升型率、基本无强化型率比(P>0.05);(5)增强MRI检查病灶假包膜显示率高于CT检查(P<0.05)。结论:SHCC检查中,增强CT检查、增强MRI检查较理想。

Objective: To observe the characteristics of small hepatocellular carcinoma(SHCC) in the background of hepatitis B cirrhosis with CT and MRI enhancement. Methods: 56 cases of SHCC admitted to our hospital were examined by enhanced CT and MRI. The detection rate of lesions, the ratio of lesions to liver, the relative enhancement rate, the types of time-density/signal intensity curve and the display rate of false cyst were observed. Results:(1)There was no significant difference in the detection rate of SHCC lesions between the two methods(P>0.05).(2) TLCR of enhanced CT was lower than that of enhanced MRI(P<0.05).(3) The r ER in arterial phase and balance phase of contrast-enhanced CT was lower than that of contrast-enhanced MRI(P<0.05);There was no significant difference in r ER of portal vein in two ways(P>0.05).(4) The rate of rapid rise and slow fall in enhanced CT was lower than that in MRI, and the rate of rapid rise and slow fall in enhanced CT was higher than that in MRI(P<0.05). The ratio of slowly rising type rate and basically no enhancement type rate between the two examination methods(P>0.05).(5) The display rate of false envelope in enhanced MRI was higher than that in CT(P<0.05). Conclusion: In SHCC examination, enhanced CT examination and enhanced MRI examination are ideal and can be popularized.