CAJ | 학술논문

背景:三维重建技术已经广泛应用于椎弓根螺钉置入前规划,但是就其预测参数的准确性目前尚未见直接的分析与报道. 目的:基于 CT 三维重建技术应用于临床,对腰椎椎弓根螺钉置入前指导作用的精确性作初步分析. 方法:在 Mimics 软件下,随机对30例行腰椎椎弓根螺钉内固定的患者共136个椎弓根行内固定前 CT三维重建,并通过内固定前模拟模块预测钉长、直径、水平面角及矢状面角度并与内固定后实际数据进行统计学比较. 结果与结论:内固定前通过 Mimics 软件对腰椎行三维重建,设计最佳钉道并模拟置钉,预测椎弓根螺钉长、直径、水平面角及矢状面角度与通过 C 型臂及内固定中导航系统等方式置钉后实际数据的差异无显著性意义(P >0.05),并且内固定后行 CT 扫描见置钉位置及长度均良好.说明通过 Mimics 软件对腰椎进行三维重建模拟置钉并制定置钉参数,能比较精确的指导内固定中实际置钉,提高椎弓根螺钉的置钉安全.
배경:삼유중건기술이경엄범응용우추궁근라정치입전규화,단시취기예측삼수적준학성목전상미견직접적분석여보도. 목적:기우 CT 삼유중건기술응용우림상,대요추추궁근라정치입전지도작용적정학성작초보분석. 방법:재 Mimics 연건하,수궤대30례행요추추궁근라정내고정적환자공136개추궁근행내고정전 CT삼유중건,병통과내고정전모의모괴예측정장、직경、수평면각급시상면각도병여내고정후실제수거진행통계학비교. 결과여결론:내고정전통과 Mimics 연건대요추행삼유중건,설계최가정도병모의치정,예측추궁근라정장、직경、수평면각급시상면각도여통과 C 형비급내고정중도항계통등방식치정후실제수거적차이무현저성의의(P >0.05),병차내고정후행 CT 소묘견치정위치급장도균량호.설명통과 Mimics 연건대요추진행삼유중건모의치정병제정치정삼수,능비교정학적지도내고정중실제치정,제고추궁근라정적치정안전.
@@@@BACKGROUND: The three-dimensional reconstruction techniques have been widely used in preoperative planning of pedicle screw placement, but the direct accuracy analysis of the forecast parameters has not yet been reported. @@@@OBJECTIVE: To analyze the accuracy of three-dimensional reconstruction based on computerized tomography in the application of lumbar pedicle screw placement. @@@@METHODS: By the using of the Mimics software, we selected 136 lumbar pedicles to perform the preoperative three-dimensional reconstruction, which were randomly selected from 30 patients treated with pedicle screw fixation. By the simulation modules of Mimics, the length, diameter, transverse section angle and sagital section angle were preoperatively predicted. Then, the data were statistical y compared with the actual data of the patients postoperatively. @@@@RESULTS AND CONCLUSION: Through the three-dimensional lumbar reconstruction preoperatively by Mimics software, the best channel of pedicle screw placement was designed and the placement of the screw was simulated. The length, diameter, transverse section angle and sagital section angle of preoperative predicted pedicle screw were pre-measured. There was no significant difference of the data when compared with the actual data obtained from the C-arm and intra-fixation navigation system after placement (P > 0.05). The postoperative actual location and length of pedicle screws were excel ent from CT scans. Through the preoperative three-dimensional lumbar reconstruction by Mimics software, the parameters of simulating pedicle screw placement can precisely guide and improve the safety of pedicle screws placement.