摘要
目的实验评价一种新型穿刺定位装置在CT导引下经皮穿刺定位的精度。方法采用体积约25 cm×20 cm×15 cm猪肉模拟正常人体肌肉组织,黏土制作数个棱长分别为5 mm、10 mm、15 mm的正方体模拟病灶,计划距体表深度分别为30 mm、50 mm、80 mm,将模拟病灶根据大小、深度分散放置在模拟正常肌肉组织的猪肉内,在同层面内计划进针角度为0°、25°、50°。对比CT导引下徒手穿刺与定位装置穿刺模拟病灶的进针角度误差和穿刺准确率。结果CT导引下徒手穿刺、定位装置穿刺模拟病灶共578次。定位装置穿刺、徒手穿刺的准确率分别为94.8%、51.7%,进针角度误差分别为1°(0°,1°)、3°(1°,7°),定位装置穿刺均显著优于徒手穿刺(P<0.01)。结论应用新型定位装置辅助穿刺可明显提高CT导引下穿刺准确率,提高穿刺精度。
Objective Through animal experiment in vitro to evaluate the accuracy of a novel puncture positioning device in performing CT-guided percutaneous puncture.Methods A piece of pork sized about 25 cm×20 cm×15 cm was used as a simulation of normal human muscle tissue,and a number of clay cubes with the edge length of 5 mm,10 mm or 15 mm respectively were made,which were used as the simulation of lesions.The planned placement depths of the clay cubes from the body surface were 30 mm,50 mm and 80 mm respectively.The simulated lesions were dispersed in pork mimicking normal human muscle tissue according to their sizes and planned depths.The planned needle puncture angles were 0°,25°and 50°at the same needle puncture level.The puncture angle deviation and the puncture accuracy were compared between CT-guided manual puncture group(manual group)and CT-guided puncture using positioning device group(positioning device group).Results A total of 578 CT-guided punctures of simulated lesions,including manual puncture(n=290)and puncture using positioning device(n=288),were performed.The accuracy rates of puncture in the manual group and the positioning device group were 94.8%and 51.7%respectively,and the puncture angle deviation in the positioning device group and the manual group were 1°(0°,1°)and 3°(1°,7°)respectively,indicating that CT-guided puncture with positioning device was obviously superior to CT-guided manual puncture(P<0.01).Conclusion In performing CT-guided percutaneous puncture,the use of the novel puncture positioning device can significantly improve the accuracy rate and precision of puncturing.(J Intervent Radiol,2021,30:693-696)
作者
杨婉
杨会军
高斌
YANG Wan;YANG Huijun;GAO Bin(Department of Radiology,Third Affiliated Hospital of Anhui Medical University,Hefei Municipal First People’s Hospital,Hefei,Anhui Province 230061,China)
出处
《介入放射学杂志》
CSCD
北大核心
2021年第7期693-696,共4页
Journal of Interventional Radiology
关键词
CT导引
经皮穿刺
体表定位
角度测量
CT guidance
percutaneous puncture
body surface localization
angle measurement
