颈部发育性椎管狭窄下颈段的影像学特征

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Abstract
目的研究颈椎发育性椎管狭窄(developmental spinal canal stenosis,DCS)患者下颈段影像学特征。方法选择颈椎DCS患者(DCS组)36例和正常志愿者(对照组)16例。入选对象均行颈部CT、MRI扫描。测量并比较2组C3~C7椎弓根最长层面的椎管正中矢状径、椎管横径、骨性椎管横截面积、硬膜囊横截面积、脊髓横截面积、椎弓根外宽度、椎弓根轴线长度、椎弓根横向长度、侧块纵向直径、侧块横径、椎板外宽度、椎板长度。结果 DCS组C3~C5水平骨性椎管横截面积、硬膜囊横截面积小于对照组。DCS组C6、C7椎弓根外宽度小于对照组,C4椎弓根轴线长度小于对照组,C5侧块横径小于对照组,C3、C6侧块长径小于对照组。结论对颈椎DCS进行后路螺丝钉固定时,应当较非DCS更为小心,以避免损伤血管神经。
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Key words
spinal stenosis,tomography,spiral computed,magnetic resonance imaging
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