【摘要】 目的观察肝细胞癌(HCC)患者经导管动脉化疗栓塞(TACE)治疗前后磁共振灌注加权成像(MRPWI)灌注值改变。方法对22例HCC患者在TACE术前和术后3～10天分别进行MRPWI,得出术前及术后平均强化时间(MTE)、负增强积分(NEI)、病灶达峰值时间(TTP)、最大信号下降斜率(MSD),比较TACE术前与术后上述各指标的差异。结果HCC瘤区时间信号曲线(TIC)TACE术前呈快速下降,TACE术后趋向平缓;MTE与TTP值术后较术前降低,NEI值术后较术前升高,差异均有统计学意义(P<0.05);MSD值术后较术前降低,但差异无统计学意义(P>0.05)。结论MRPWI能够敏感地观察到HCCTACE术前后的血流变化,可用于评价TACE疗效。更多还原

【Abstract】 Objective To observe the change of MR perfusion value in patients with hepatocellular carcinoma(HCC)before and after transcatheter arterial chemoembolization(TACE).Methods A total of 22 patients with HCC underwent MR perfusion weighted imaging(MR PWI)before TACE and 3-10 days after TACE.The mean time to enhance(MTE),negative enhancement integral(NEI),time to peak(TTP)and maximum slope of decrease(MSD)before and after TACE were acquired and compared.Results The time intension curve(TIC)of HCC region was observed to descend rapidly before TACE,while descended slowly after TACE.The value of MTE and TTP after TACE were lower than those before TACE(P <0.05),and the value of NEI after TACE was higher than that before TACE(P <0.05).The value of MSD after TACE were lower than that before TACE,but no statistical significance was found(P >0.05).Conclusion MR PWI is a very sensitive imaging technique that be used to monitor blood flow changes of HCC before and after TACE and evaluate efficacy of TACE.更多还原