腰椎椎体中间层面椎管管径大小的螺旋CT测量及临床意义

Measurement of spinal canal by spiral CT and its clinical significance

目的探讨健康成人腰椎椎体中间层面椎管大小及其临床意义。方法 120例非腰椎疾病患者,进行腰椎多层螺旋CT扫描并多平面重建,测量各节段腰椎椎体中间层面椎管的矢径和横径,比较不同年龄、性别及腰椎不同节段上述指标的差异。结果 (1)相同椎体层椎管矢径,男女性别之间及不同年龄组之间差异均无统计学意义(P值均>0.05);不同椎体层面椎管矢径的差异有统计学意义(P<0.05),腰3椎体层面最小(15.9±2.1)mm。(2)相同椎体层面椎管横径,男女性别之间及不同年龄组之间差异均有统计学意义(P值均<0.05);不同椎体层面椎管横径差异有统计学意义(P<0.05)。结论健康人腰椎椎管的形态为矢径短于横径的扁管状结构,男性比女性稍扁,而且随着年龄的增大腰椎椎管的形态越来越扁,这与腰椎相关疾病的发生、发展有一定联系。

Objective To study the sagittal diameter and transverse diameter of adult lumbar spinal canal.Method The lumbar spinal canal of 120 persons without lumbar disease were scanned using spiral CT and mutiple planner reconstruction.The sagittal diameter and transverse diameter of spinal canal was measured. The differences of the measuements between male and female or different age groups were compared. Results(1)There were no significant differences on sagittal diameter of spinal canal between males and females or different age groups(P >0.05).There was significant differences on sagittal diameter of spinal canal between different lumbar segment(P<0.05). The sagittal diameter of L3 was miniimum to(15.9±2.1)mm.(2)There were significant differences on transverse diameter of spinal canal between males and females or different age groups or different lumbar segment(P <0.05). Conlusion The sagittal diameter less than transverse diameter of adult lumbar spinal canal,spinal canal is a flat tubular structure,and with the increase of age of the lumbar vertebral canal form is more and more flat, the occurrence and development of the associated with lumbar disease have certain contact.