156例正常成人L_5～S_1椎体水平椎管内硬膜外脂肪的MRI研究

MRI study of the epidural fat at the L_5～S_1 level of 156 normal adults

目的评价正常成人L5～S1椎体水平椎管内硬膜外脂肪厚度正常范围的临床意义 ,探寻其相关因素的影响。方法利用磁共振 (MRI)对 15 6例正常成人进行腰骶段脊柱的矢状位T1WI扫描 ,选择正中矢状位L5～S1椎体水平椎管内硬膜外腹侧脂肪最厚处进行测量 ,所得值进行统计学处理。结果 15 6例成人该水平脂肪厚度平均为 4 14± 1 99mm ,男女间差异无显著意义 ,该值与体重呈正相关。结论L5～S1椎体水平椎管内硬膜外脂肪厚度的正常值范围可为临床诊断相应水平的一些脊柱疾病提供参考依据。

Objective To evaluate the clinical value and study the relational factors of epidural fat at the L 5～S 1 level of normal adults. Method T1 weighted sagitted imagings of the epidural fat at the L 5～S 1 level of 156 normal adults were obtained by MRI. The thickest eipidural fat were measured and analyzed. Results The average value of the thickness of the epidural fat was 4.14±1.99 mm. There was no significant difference between male and female. The thickness of the epidural fat at this level has a positive correlation with the weight of adults. Conclusion The thickness of the epidural fat can be used as a reference in diagnosing some spinal diseases.