[图像引导和透视导航下椎弓根螺钉植入术中的体外单剂量与放射剂量]
[Extracorporeal single dose and radiographic dosage in image-controlled and fluoroscopic navigated pedicle screw implantation].
作者信息
Linhardt O, Perlick L, Lüring C, Stern U, Plitz W, Grifka J
机构信息
Orthopädische Klinik der Universität Regensburg.
出版信息
Z Orthop Ihre Grenzgeb. 2005 Mar-Apr;143(2):175-9. doi: 10.1055/s-2005-836489.
AIM
Goal of the current study was to compare radiation dose and fluoroscopy time of fluoroscopic computer assisted pedicle screw implantation versus the conventional technique.
METHOD
For each of 10 specimens two pedicle screws were placed using conventional technique (group 1) and two screws were inserted with fluoroscopic navigation system (group 2) contralateraly.
RESULTS
For implantation of two pedicle screws the mean radiation dose was 0.041 mSv in group 1 and 0.029 mSv in group 2. Fluoroscopy time was 34 seconds in group 1 and 25 seconds in group 2. The differences of radiation dose and fluoroscopy time for group 1 and 2 were statistically significant (radiation dose p = 0.00044, fluoroscopy time p = 0.00039).
CONCLUSION
We achieved significantly lower radiation dose and fluoroscopy time with fluoroscopic computer assisted pedicle screw implantation compared with the conventional technique. Concerning exposure to radiation for patients and personnel fluoroscopic navigated screw insertion is to favour.
目的
本研究的目的是比较透视计算机辅助椎弓根螺钉植入术与传统技术的辐射剂量和透视时间。
方法
对10个标本中的每一个，使用传统技术放置两枚椎弓根螺钉（第1组），并在对侧使用透视导航系统插入两枚螺钉（第2组）。
结果
植入两枚椎弓根螺钉时，第1组的平均辐射剂量为0.041 mSv，第2组为0.029 mSv。第1组的透视时间为34秒，第2组为25秒。第1组和第2组的辐射剂量和透视时间差异具有统计学意义（辐射剂量p = 0.00044，透视时间p = 0.00039）。
结论
与传统技术相比，透视计算机辅助椎弓根螺钉植入术的辐射剂量和透视时间显著降低。就患者和工作人员的辐射暴露而言，透视导航螺钉植入更具优势。
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