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目的 评价超声造影谐频成像在原发性肝癌治疗后疗效判断方面的作用。方法 使用Levovist对2 7例 33个肝癌结节治疗前后分别行超声造影能量多普勒谐频成像和灰阶谐频成像数字减影检查 ,结果与动态增强CT相比较。结果 以动态增强CT结果为金标准 ,治疗前 33个肝癌结节 ,超声造影增强的阳性率为93.9%( 31/ 33) ;而对治疗后肝癌 ,能量多普勒谐频成像显示肿瘤内血流信号的敏感性、特异性和准确性均为10 0 %,灰阶谐频成像数字减影则分别为 93.9%、10 0 %和 96 .8%。结论 超声造影谐频成像可以敏感而直观地显示治疗后肿瘤内残存的血流信号 ,即时评估肿瘤的治疗效果 ,创伤小 ,值得临床推广
Objective To evaluate the role of contrast-enhanced ultrasound imaging in evaluating the curative effect of primary liver cancer. Methods Levovist was used to evaluate the contrast-enhanced ultrasound Doppler harmonic imaging and gray-scale harmonic imaging of the 33 liver cancer nodules before and after treatment. The results were compared with those of dynamic contrast-enhanced CT. Results Using dynamic contrast-enhanced CT results as the gold standard, the positive rate of enhanced ultrasound contrast was 33.9% (31/33) in the treatment of the first 33 hepatocellular carcinoma nodules; The sensitivity, specificity, and accuracy of the flow signal were all 10%, and the digital subtraction of grayscale harmonic imaging was 93.9%, 100%, and 96.8%, respectively. Conclusions Contrast-enhanced ultrasound imaging can be sensitive and intuitive to show the residual blood flow in the tumor after treatment. It is timely to evaluate the therapeutic effect of the tumor. It is minimally invasive and worthy of clinical promotion.