Assessment of a needle-tracking system for bipolar radiofrequency ablation
Assessment of a needle-tracking system for bipolar radiofrequency ablation
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DOI：
10.1007/s10396-015-0679-4
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发表时间：
2016-04
影响因子：
1.8
通讯作者：
M. Hirooka;Y. Koizumi;Yusuke Imai;H. Ochi;Yoshiko Nakamura;O. Yoshida;A. Hiraoka;Yoshio Tokumoto;M. Abe;Y. Hiasa
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文献类型：
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作者：
M. Hirooka;Y. Koizumi;Yusuke Imai;H. Ochi;Yoshiko Nakamura;O. Yoshida;A. Hiraoka;Yoshio Tokumoto;M. Abe;Y. Hiasa
PurposeThe的目的，这项研究是评估的准确性和有效性的针跟踪系统在幻影和临床研究使用bipolar electrodes.MethodsTo观察电极的尖端，针跟踪系统与体积导航系统被使用。在体模研究中，以不同角度插入电极并验证误差。在临床研究中，2014年5月至10月期间入组了21个靠近肝外器官或主要血管的结节。用针跟踪系统穿刺后，进行计算机断层扫描（CT）。在B超和CT上测量电极头端与肝外器官或主要血管之间的距离。通过比较这些距离，该系统的准确性进行了评估。ResultsIn体模研究，电极的尖端和虚拟电极尖端之间的偏差进行了分析。每个穿刺角度的中位数均在2 mm范围内。在临床研究中，B型超声与CT的测量结果差异较小（平均1.17 ± 1.76mm，范围0 ~ 3.5mm）。
PurposeThe purpose of this study was to assess the accuracy and efficacy of a needle-tracking system in phantom and clinical studies using bipolar electrodes.MethodsTo observe the tip of the electrode, a needle-tracking system with a volume navigation system was used. In the phantom study, the electrode was inserted at various angles and the error was verified. In the clinical study, 21 nodules close to extrahepatic organs or major vessels were enrolled between May and October 2014. After puncturing with the needle-tracking system, computed tomography (CT) was performed. The distances between the electrode tip and extrahepatic organs or major vessels were measured on both B-mode ultrasound (US) and CT. By comparing these distances, the accuracy of this system was evaluated.ResultsIn the phantom study, the deviation between the tip of the electrode and the virtual tip of the electrode was analyzed. The median values were within 2 mm at each puncture angle. In the clinical study, the difference between B-mode US and CT was less (mean value 1.17 ± 1.76 mm; range 0–3.5 mm).ConclusionThe needle-tracking system is an accurate and useful system for bipolar radiofrequency ablation.