应用二维及多普勒超声对射频治疗肝癌疗效的随访观察

Follow-up of radio frequency ablation to liver cancer using two dimensional and Doppler ultrasonography

目的:评价应用自然组织谐波显像(NTHI)、彩色及能量多普勒(CDFI及CDE)随访观察集束电极射频治疗肝癌6～18个月的疗效。方法:NTHI、CDFI和CDE观察射频治疗前及治疗后6月的68例73个肿块、12月的40例55个肿块和18月的15例17个肿块的大小、回声和血流动力学情况。随访射频术后6月、12月、18月的患者,计算其生存率。结果:射频治疗后6月、12月、18月肿块缩小,回声增强,肿块缩小率分别为57.5%,51.8%,47.1%;肿块血流信号消失或明显减少,血流信号消失率分别为72.6%,55.1%,48.7%;肝动脉的血流速度及阻力指数降低。患者的生存率分别为100%,93.3%和85.2%。结论:应用NTHI、CDFI、CDE对肝癌患者射频治疗前后肿块的观察方法简便、无创,在疗效判断及随访中具有重要临床意义。

Objective:To evaluate the curative effects of electrode radio frequency(RF) ablation to liver cancer using nature tissue harmonic imaging(NTHI),color Doppler flow imaging(CDFI)and color Doppler energy(CDE) Methods:Seventy three tumors in 68 patients,55 tumors in 40 patients and 17 tumors in 15 patients were investigated by NTHI,CDFI and CDE in 6,12 and 18 months before and after treatment respectively Size,echo and hemodynamic characters of tumors were compared with those before treatment The survival rates of patients were calculated at 6th month,12th month and 18th month after RF Results:After RF,the echo of masses were enhanced,size reduced with the rate of 57 5%,51 8%,47 1%respectively at 6th,12th and 18th month Signals of blood flow fell or even disappeared,with the rate of 72 6%,55 1%,48 7% respectively The velocity (Vmax)and resistant index(RI) of hepatic arteries reduced The survival rates of patients were 100%,93 3%and 85 2% Conclusion:It is easy and noninvasive in the observation of tumors in liver cancers before and after RF ablation treatment with NTHI,CDFI and CDE which have significant clinical value in follow up the effect of RF ablation to liver cancers