PEI 联合 HIFU 治疗不能手术切除的中晚期原发性肝癌的临床研究

目的：探讨在镇静镇痛下行无水乙醇注射术（PEI），能否提高高强度聚焦超声（HIFU）治疗不能手术切除的中晚期原发性肝癌（PCL）的能量沉积及其治疗效率。方法将临床确诊的不能手术切除的中晚期 PCL 患者36例分为 PEI 联合 HI-FU 治疗组（联合组，n＝23）和单纯 HIFU 治疗组（HIFU 组，n＝13）；联合组于消融前30 min 向瘤体内注入99．70％无水乙醇与碘化油（9∶1）混合液10 mL，HIFU 组以0．9％生理盐水10 mL 替代，比较两组患者消融的能效因子（EEF）及辐照时间。结果联合组、HIFU 组消融 EEF 分别为（13．82±4．26）、（25．63±6．31）J／ mm3，联合组明显低于 HIFU 组（P ＜0．05）；辐照时间分别为（1468．28±253．21）、（2352．56±463．34）s；联合组辐照时间明显缩短（P ＜0．05）。结论PEI 能够增强 HIFU 消融能量沉积，能够提高 HIFU 治疗不能手术切除的 PCL 的治疗效率。

Clinical study of PEI combined with HIFU for treating unresectable middle and advanced stages of primary liver cancer

Objective To investigate whether the percutaneous ethanol injection (PEI)under sedation and analgesia can in-crease the energy deposition and curative efficiency of the high intensity focused ultrsound(HIFU)in treating unresectable middle and advanced stages of primary liver cancer.Methods Thirty-six cases of clinically diagnosed unresectable middle and advanced sta-ges of primary liver cancer were randomly divided into the PEI+ HIFU group(combination group,n = 23)and the simple HIFU group (HIFU group,n=13);10mL of the mixture of 99.7% ethanol and iodized oil (9:1)was given by intratumoral injection at 30 min before ablation in the PEI+HIFU group,while 0.9% physiological saline 10mL was replaced in the simple HIFU group.The ablation energy efficiency factor(EEF)and irradiation time were compared between the two groups.Results The ablation EEF in the PEI+HIFU group and the simple HIFU group were (13.82+4.26)J/mm3 and (25.63+6.31)J/mm3 respectively,the PEI+HIFU group was significantly lower than the simple HIFU group (P <0.05);the irradiation time were (1 468.28+253.21)s and (2 352.56+463.34)s respectively;which in the PEI+ HIFU group was significantly shortened (P <0.05).Conclusion PEI can enhance the HIFU ablation energy deposition and improve the efficiency of HIFU for treating unresectable primary liver cancer.