Nitta Norihisa, Takahashi Masashi, Tanaka Toyohiko, Takazakura Ryutaro, Sakashita Yoko, Furukawa Akira, Murata Kiyoshi, Shimoyama Keiji
Department of Radiology, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, 520-2192, Japan.
Radiat Med. 2007 May;25(4):187-93. doi: 10.1007/s11604-006-0116-0. Epub 2007 May 28.
To conduct computed tomography (CT)-guided puncture exactly and safely, we newly developed a laser guiding puncture system that can be used in a commercially available CT scanner.
The laser-guided CT puncture system is built on the CT table with an aluminum frame. Preliminary simulation tests were conducted using two models representing the body and nodular lesions, and puncture procedures were carried out for 15 patients using this system.
The mean distance and standard deviation from the center in simulation experiments conducted using this puncture system were 2.95 +/- 1.20 mm for operator A and 3.52 +/- 1.12 mm for operator B. There was no statistically significant difference between the operators (P = 0.40) or the angles (P = 0.32). For five lung biopsy patients, the distance from the target point planned before biopsy to the actual last puncture point was 0-8 mm. For 10 percutaneous vertebroplasty (PVP) patients (two performed in Th11, one in Th12, five in L1, two in L2), the plan before the puncture procedure was to pass the needle through the vertebral pedicle in all cases. The distance between the planned target point and the actual last puncture point was 0-5 mm.
This system has the potential to accomplish the CT-guided puncture procedure safely and accurately.
为了准确、安全地进行计算机断层扫描（CT）引导下的穿刺，我们新开发了一种可用于商用CT扫描仪的激光引导穿刺系统。
激光引导CT穿刺系统安装在带有铝框架的CT检查台上。使用代表身体和结节性病变的两种模型进行了初步模拟测试，并使用该系统对15例患者进行了穿刺操作。
在使用该穿刺系统进行的模拟实验中，操作员A距中心的平均距离和标准差为2.95±1.20mm，操作员B为3.52±1.12mm。操作员之间（P = 0.40）或角度之间（P = 0.32）无统计学显著差异。对于5例肺活检患者，活检前计划的目标点到实际最后穿刺点的距离为0 - 8mm。对于10例经皮椎体成形术（PVP）患者（2例在胸11，1例在胸12，5例在腰1，2例在腰2），穿刺操作前的计划是在所有病例中使针穿过椎弓根。计划目标点与实际最后穿刺点之间的距离为0 - 5mm。
该系统有潜力安全、准确地完成CT引导下的穿刺操作。
