【摘要】 目的：探讨无骨折脱位颈段脊髓损伤的机制及MRI表现。方法：收集15例经X线、CT或MRI检查未见骨折脱位的颈段脊髓损伤的病例。所有病例均行矢状位、轴位扫描，均行SE序列TlWI及FSE序列T2WI。结果:7例有颈椎间盘突出，其中40岁以上的有6例。前纵韧带撕裂5例，4例为40岁以上。脊髓受压7例，为突出间盘及肥厚黄韧带压迫所致。所有病例在T2WI均呈现出明显的异常信号。脊髓挫伤、水肿11例，出血2例，囊变2例。结论：无骨折脱位的预段脊髓损伤机制主要有2种：①脊髓的一过性损伤：主要由伤时椎间瞬间移位造成，原先存在的间盘退变因素也参与了损伤。②脊髓的持续性压迫：主要内外伤性椎间盘突出造成。本组资料表明，儿童无骨折脱位的预段脊髓损伤范围较大，多无脊髓的持续性压迫。年长者损伤范围较小，多伴有脊髓的持续性压迫。MRI是无骨折脱位脊髓损伤的最佳检查方法。更多还原

【Abstract】 Objective: To investigate the mechanism of cervical spinal coal in injury without fracture and dislocation and to demonstrate the WRI fiedingr of the inilny. Methods: fifteen patiens with eervical spinal cord injury with the boare and dialca1ion were studied with 1.5T magn. ha: Intervertebral disk hewhation was seen with Mm in seven peients. sit of theIn were over 40 yeare old.Anterior longitudinal ligament was ruptured in five cases, four of them were over fourty. Spnal cord was comprssed by driated disk in four cases. Abn0rmal signal on T2WI was seen in all cases. spind coul contusion and edema were seen in eleven cases. Hemorrhage was seen in two cases,and cyst in two also. Conclusions: The spnal cord injdries hauly occur hy means of eithe one of the two mechanisms: forent contusion, or compession of the sPinal coal by the hewhated disk. The area of the spinal cord injmp in children is more extensive than in adult, and there is usuall no compresson on the spinal cord which is usually seen in adults. MRI is the best all to diagnose the spinal cord injury.更多还原