正常成人胸段椎管内脂肪的MRI研究

目的评价正常成人胸段椎管内脂肪的分布特征和厚度范围的临床价值,探讨脂肪厚度相关影响因素。方法在MR正中矢状面T1W I上观察268例正常成人胸段椎管内脂肪的分布特点,并测量椎间盘中心平面脂肪厚度和椎管前后径,对测量结果行统计学分析。结果MR I正中矢状面上胸段椎管内脂肪仅见于背侧硬膜外腔,多呈节段性分布,少数呈连续带状或梭带状分布。各水平脂肪厚度范围不等,但在性别和年龄组间均无统计学差异,体重指数、椎管前后径与之呈正线性相关关系。结论正常成人胸段椎管内脂肪的分布特征和厚度范围可为临床诊断某些椎管疾病提供参考依据。

MRI Study of the Thoracic Canal Fat in Normal Adults

Objective To evaluate the clinical value of the distribution characters and thickness of fat in thoracic canal in normal adults,and to assess the relational factors of the fat thickness.Methods The distribution characters of the thoracic canal fat in 268 normal adults were studied in mid-sagittal plane on MR T_1WI.The thickness of epidural fat and the canal diameter were measured and analyzed.Results Thoracic canal fat on mid-sagittal plane was only found in posterior epidural space,mainly appearing as segmental distribution. Continuous barred or spindle shape of the fat was also seen in some cases.The thickness of fat varied at different thoracic levels.There was no statistic significance between men and women or every age group about the fat thickness.Positive linear correlation occurred between spinal canal diameter or obesity index and the fat thickness.Conclusion The distribution characters and thickness of the thoracic epidural fat can be used as references in diagnosing some spinal canal diseases.