实时影像虚拟导航系统在肝癌微创治疗中的初步应用

Real-time virtual navigation system for percutaneous ablation of sonographically unidentified hepatic malignacies

目的应用实时影像融合虚拟导航技术对常规超声显示不佳的肝癌病灶行经皮肿瘤微创治疗，明确此影像技术的安全性、可行性及临床应用价值。方法15例患者共22个肝癌病灶接受虚拟导航引导卞经皮消融术，并于术后1月内经增强CT／MR评定消融效果。结果20个病灶完全消融，2个病灶有局部残留。未出现与治疗相关的并发症。结论实时影像虚拟导航系统能精确定位病灶，引导穿刺和监控治疗，特别对常规超声不显示的肝癌病灶，虚拟导航技术更显示出优越性。

Objective To evaluate the safety, feasibility and clinical value of real-time navigation system with CT/MR and sonographic images for percutaneous ablation of hepatic malignancies poorly defined on conventional ultrasonography. Methods Fifteen patients with 22 hepatic malignant lesions underwent percutaneous ablation guided by virtual navigation system with ultrasonography. Treatment response was assessed by the contrast CT/MR followed up one month after procedures. Results Complete tumor necrosis was achieved in 20 lesions,but 2 lesions showed residual tumor in the ablation zone. No treatment associated complications were found. Conclusions The application of virtual navigation system is of clinical value in localization of lesions, guidance of biopsy and assessment of the interventional therapy in patient with hepatic malignancies, particularly for those with poorly identified lesions by conventional ultrasonography.