CT引导下肺肿瘤射频术中多平面重组的应用价值

The Application of MPR in CT-Guided Radiofrequency Ablation for Lung Tumors

目的:探讨CT多平面重组(MPR)在肺肿瘤射频消融术中的应用价值。方法:回顾性收集经病理证实、且行CT下射频消融术的肺肿瘤患者的临床和影像学资料。纳入标准:仅有1个肺肿瘤病灶,且肿瘤最大径不超过5cm。根据术中定位方法不同,分为常规轴位扫描组和MPR重组定位组。对两组肿块最大径、肿块距胸膜的距离、调整进针的次数、操作时间、术中并发症进行统计学分析。结果:共收集40例接受射频消融术的肺肿瘤患者,常规组与MPR组各20例。肿块最大径、肿块距胸膜的距离在两组间的差异均无统计学意义(P>0.05),MPR组较常规组调整进针次数少(P<0.001)、操作时间短(P<0.001)、术中并发症少(P<0.05)。结论:CT引导下肺肿瘤射频消融术中,MPR能更好显示射频针与肿块和周围解剖结构之间的关系,可减少调整进针的次数、缩短射频术的操作时间、降低术中并发症的发生率。

Purpose:To evaluate the value of CT multiplanar reformation(MPR)in the lung radiofrequency ablation.Methods:The clinical and imaging data of patients with lung tumors confirmed by pathology results were retrospectively collected.The inclusion criteria was:there was only one lung tumor,the maximum diameter of the tumor was less than 5 cm,and the patients were treated with CT radiofrequency ablation.According to different localization methods,the patients were divided into two groups:conventional axial scanning group and MPR reconstruction group.The maximal diameter,the distance from the mass to the pleura,the times of needle insertion,operation time and complications were analyzed.Results:A total of 40 patients with lung tumors received radiofrequency ablation,20 in the routine group and 20 in the MPR group.There was no significant difference between the two groups in the maximum diameter of the mass and the distance between the mass and the pleura(P>0.05).In the routine group,the number of needle insertion was more than that in the MPR group(P<0.001),the operation time was longer than that in the MPR group(P<0.001).The complications occurred in 9 cases in the routine group and 2 cases in the MPR group.The complications in the MPR group were less than those in the routine axial scanning group(P<0.05).Conclusion:CT MPR technique can be used to better display the relationship between the radiofrequency needle and the mass and the surrounding anatomic structure during the radiofrequency ablation of lung tumor,by which times of needle insertion can be reduced,the operating time of radio frequency operation can be shortened and the incidence of intraoperative complications can be reduced.