Weigel Katharina, Kubik-Huch Rahel A, Baer-Beck Matthias, Canstein Christian, Kostrzewa Michael
Department of Radiology, Baden Cantonal Hospital, 5404 Baden, Switzerland.
Barking, Havering and Redbridge University Hospitals NHS Trust, Romford RM7 0A, UK.
Diagnostics (Basel). 2023 Jan 12;13(2):282. doi: 10.3390/diagnostics13020282.
The purpose of this phantom study was to compare the accuracy, speed and technical performance of CT guided needle placement using a conventional technique versus a novel, gantry integrated laser guidance system for both an expert and a novice. A total of 80 needle placements were performed in an abdominal phantom using conventional CT guidance and a laser guidance system. Analysis of pooled results of expert and novice showed a significant reduction of time (277 vs. 204 s, p = 0.001) and of the number of needle corrections (3.28 vs. 1.58, p < 0.001) required when using laser guidance versus conventional technique. No significant improvement in absolute (3.81 vs. 3.41 mm, p = 0.213) or angular deviation (2.85 vs. 2.18°, p = 0.079) was found. With either approach, the expert was significantly faster (conventional guidance: 207 s vs. 346 s, p < 0.001; laser guidance: 144 s vs. 264 s, p < 0.001) and required fewer needle corrections (conventional guidance: 4 vs. 3, p = 0.027; laser guidance: 2 vs. 1, p = 0.001) than the novice. The laser guidance system helped both the expert and the novice to perform CT guided interventions in a phantom faster and with fewer needle corrections compared to the conventional technique, while achieving similar accuracy.
本体模研究的目的是比较传统技术与新型的机架集成激光引导系统在CT引导下进行针穿刺放置时，专家和新手的准确性、速度及技术性能。使用传统CT引导和激光引导系统在腹部体模中总共进行了80次针穿刺放置。对专家和新手汇总结果的分析显示，与传统技术相比，使用激光引导时所需时间显著减少（277秒对204秒，p = 0.001），针校正次数也显著减少（3.28次对1.58次，p < 0.001）。未发现绝对偏差（3.81毫米对3.41毫米，p = 0.213）或角度偏差（2.85°对2.18°，p = 0.079）有显著改善。无论采用哪种方法，专家都比新手显著更快（传统引导：207秒对346秒，p < 0.001；激光引导：144秒对264秒，p < 0.001），且所需针校正次数更少（传统引导：4次对3次，p = 0.027；激光引导：2次对1次，p = 0.001）。与传统技术相比，激光引导系统帮助专家和新手在体模中更快地进行CT引导干预，且针校正次数更少，同时达到相似的准确性。
