腰椎椎弓根螺钉内固定术三维可视化设计

目的建立腰椎椎弓根内固定术后的三维可视化数字模型。方法选择1名腰椎间盘突出和1名腰椎压缩性骨折患者,在腰椎内固定术前及术后行多排螺旋CT扫描,观测术前椎体压缩程度、手术前后腰椎结构形态,术后钉棒的位置及椎板减压情况,利用Amira 4.1软件,经剪切、分割、表面重建及绘制等步骤,对腰椎结构及内植物进行三维重建,获得立体形态的腰椎手术前后改变及内置物位置结构。结果借助数字化导航平台,重建了手术前后的腰椎和内置物形态结构。重建的三维结构可以多彩色、透明或任意组合显示。经不同角度观察,重建的三维结构显示清晰、实体感强。在三维表面重建的图像中可清楚地观察到内固定物的位置形态,特别是可以充分评估脊髓或神...

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Bibliographic Details
Published in解放军医学杂志 Vol. 36; no. 9; pp. 935 - 938
Main Author 徐凯 陈春 黄山东 章莹 尹庆水
Format Journal Article
LanguageChinese
Published 2011
Subjects
成像,三维
椎弓根
矫形外科手术
腰椎
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Summary:目的建立腰椎椎弓根内固定术后的三维可视化数字模型。方法选择1名腰椎间盘突出和1名腰椎压缩性骨折患者,在腰椎内固定术前及术后行多排螺旋CT扫描,观测术前椎体压缩程度、手术前后腰椎结构形态,术后钉棒的位置及椎板减压情况,利用Amira 4.1软件,经剪切、分割、表面重建及绘制等步骤,对腰椎结构及内植物进行三维重建,获得立体形态的腰椎手术前后改变及内置物位置结构。结果借助数字化导航平台,重建了手术前后的腰椎和内置物形态结构。重建的三维结构可以多彩色、透明或任意组合显示。经不同角度观察,重建的三维结构显示清晰、实体感强。在三维表面重建的图像中可清楚地观察到内固定物的位置形态,特别是可以充分评估脊髓或神经根的减压程度及椎体骨折和压缩程度。术前重建图像可以清晰显示椎弓根的位置,为术中精确定位提供参考。结论腰椎椎弓根内固定术的三维重建对基础研究、临床试验及手术规划具有重要价值,应用Amira软件可为三维建模提供基础。
Bibliography:Objective To establish a three-dimensional visualization model of posterior lumbar pedicle screw fixation.Methods A patient with lumbar intervertebral disc hernia and another patient with compression fracture of lumbar vertebra were involved in the present study.Both patients underwent multi-slice spiral CT scan before and after lumbar pedicle screw fixation.The degree of preoperative vertebral compression,vertebral morphology before and after surgery,postoperative pedicle screw position,and decompression effects were observed.The original data of the multi-slice spiral CT were inputted into the computer.The three-dimensional reconstructed images of the lumbar and implanted screws were obtained using the software Amira 4.1 to show the three-dimensional shape of the lumbar vertebrae before and after surgery and the location of the implanted screws.Results The morphology and structure of the lumbar vertebrae before and after surgery and of the implanted screws were reconstructed using the digital navigation pla
ISSN:0577-7402