超声造影指导射频消融治疗小肝癌的应用价值

目的 探讨超声造影(CEUS)指导射频消融治疗小肝癌的应用价值.方法 70例经病理诊断的肝恶性肿瘤患者共104个病灶为研究对象;其中39例54个病灶采用SonoVue团注法行CEUS检查并引导治疗(CEUS组),同期常规超声引导消融治疗的31例50个病灶为对照组.病灶大小0.7～2.7cm,平均(1.60±0.43)cm.两组病例临床一般指标差异无统计学意义.结果 CEUS组中13例17个病灶的范围较常规超声显示清晰(31.5%),其中1.5 cm以下病灶12个,均在CEUS引导下消融治疗.CEUS组与对照组治疗结果比较,术后1个月肿瘤灭活率分别为100%和92%,肿瘤的治疗次数分别为(1.00±0.00)次和(1.08±0.27)次;随访8～52个月(平均21个月),肿瘤局部复发率分别为0和4%.肿瘤灭活率及治疗次数两组间差异有统计学意义.结论 CEUS可改善小肿瘤的显示率并引导精确定位,有效提高灭活率,减少治疗次数,有较高的临床应用价值.

Abstract：

Objective To investigate the value of contrast enhanced ultrasonography (CEUS) in the treatment of small hepatic malignancies with radiofrequency ablation(RFA). Methods Seventy patients with 104 pathologically proved malignant liver lesions treated by RFA (size 0.7 -2.7 cm) were divided into 2 groups including CEUS group and control group. In CEUS group,39 patients(54 lesions) were treated with RFA guided by CEUS, while in control group 31 patients (50 lesions) were guided by conventional ultrasonography. There was no significant difference between clinical data of the two groups. Results Seventeen tumors(among them,12 lesions were less than 1.5 cm in diameter) in 13 patients showed more clearly on CEUS image than on conventional ultrasonography image (31.5% ) in CEUS group. The tumor necrosis rate at one month after RFA was 100% in CEUS group,and 92% in control group ( P = 0. 034).The number of RFA sessions per tumor was 1.00± 0.00 in CEUS group,and 1.08 ± 0.27 in control group (P = 0.000). Local tumor progression rate was 0 in CEUS group and 4% in control group ( P = 0. 138)during the period of 8 - 52 months follow-up (average 21 months). Conclusions CEUS can not only improve the display of small hepatic malignancies but also provide precise guidance in contrast with conventional ultrasonography. Compared with control group, RFA of small hepatic malignancies guided by CEUS lower the number of RFA sessions, enhance the tumor necrosis rate, decrease post-RFA local progression and therefore it has extensive clinical value.

Radiofrequency ablation of small hepatic malignancies guided by contrast enhanced ultrasonography

Objective To investigate the value of contrast enhanced ultrasonography (CEUS) in the treatment of small hepatic malignancies with radiofrequency ablation(RFA). Methods Seventy patients with 104 pathologically proved malignant liver lesions treated by RFA (size 0.7 -2.7 cm) were divided into 2 groups including CEUS group and control group. In CEUS group,39 patients(54 lesions) were treated with RFA guided by CEUS, while in control group 31 patients (50 lesions) were guided by conventional ultrasonography. There was no significant difference between clinical data of the two groups. Results Seventeen tumors(among them,12 lesions were less than 1.5 cm in diameter) in 13 patients showed more clearly on CEUS image than on conventional ultrasonography image (31.5% ) in CEUS group. The tumor necrosis rate at one month after RFA was 100% in CEUS group,and 92% in control group ( P = 0. 034).The number of RFA sessions per tumor was 1.00± 0.00 in CEUS group,and 1.08 ± 0.27 in control group (P = 0.000). Local tumor progression rate was 0 in CEUS group and 4% in control group ( P = 0. 138)during the period of 8 - 52 months follow-up (average 21 months). Conclusions CEUS can not only improve the display of small hepatic malignancies but also provide precise guidance in contrast with conventional ultrasonography. Compared with control group, RFA of small hepatic malignancies guided by CEUS lower the number of RFA sessions, enhance the tumor necrosis rate, decrease post-RFA local progression and therefore it has extensive clinical value.