摘要
目的 研究椎体骨折后不同时间、不同序列上椎体的MR信号变化及其在临床康复治疗中的意义。方法 收集 2 13例 2 86个椎体骨折后不同时期患者行MR检查的病例 ,分析骨折椎体在不同MR成像序列上的信号变化。结果 椎体骨折后不同时期的信号改变可分为 6种类型 :Ⅰ型 77个椎体 ,表现为均匀的长T1、长T2 信号 ,短时反转恢复序列 (STIR )上呈均匀高信号 ,增强扫描后创伤区呈明显均匀强化 ;Ⅱ型 4个椎体 ,表现为骨折区长T1、长T2 信号内见点、片状短T1、等或长T2 信号 ;Ⅲ型 112个椎体表现为T1WI等、低混杂信号 ,T2 WI等、低、高多种形式的混杂信号 ,STIR序列和脂肪抑制梯度回波序列上呈点状、小片状高信号 ;Ⅳ型 3 6个椎体 ,在各种序列上的信号改变均与正常椎体相同 ;Ⅴ型 2 5个椎体 ,椎体骨折区出现点、片状短T1、长T2 信号 ,STIR序列、脂肪抑制梯度回波序列呈低信号 ;Ⅵ型 3 2个椎体 ,椎体骨折区呈均匀的短T1、长T2 信号 ,STIR序列上呈均匀低信号。结论 磁共振成像能很好地反映椎体骨折后不同阶段的病理改变 ,对临床康复治疗具有一定参考价值。
Objective To study the MR signs of vertebral body fracture and its healing on different MRI sequences, as well as its roles in clinical rehabilitation. Methods On different MRI sequences, the MR signs of 286 fractured vertebrae in 213 patients were analyzed. Results The signal intensity of the fractured vertebral bodies at different time can be classified as 6 types: 77 vertebral bodies of typeⅠdemonstrated as hypointensity on T 1WI, heperintensity on T 2WI and STIR ,as well as obvious enhancement after Gadolinium injection to adjacent normal vertebral bodies; 4 vertebral bodies oftype Ⅱshowed hyperintensity on T 1WI and isointensity orhyperintensity on T 2WI in the lesions; isointensity or hypointensity on T 1WI, various inhomogeneoussignal intensity on T 2WI and hyperintensity on STIR and GRE sequenceswere related to 112 vertebral bodies of type Ⅲ; 36 vertebral bodies of type Ⅳ returned normal signal intensity; 25 vertebral bodies of type Ⅴ showed heperintensity on T 1WI and T 2WI, as well as low signal intensity on STIR and GRE sequencesin the lesion; 32 vertebral bodies of type Ⅵ showed homogeneous hyperintensity on T 1WI and T 2WI, as well as hypointensity on STIR sequence. Conclusion The MRI can accurately reveal various pathologic changes in the different recovery stages of the fractured vertebral body,which can be used as a usefule index in monitoring the clinical rehabilitation process.
出处
《中华物理医学与康复杂志》
CAS
CSCD
北大核心
2004年第3期176-179,共4页
Chinese Journal of Physical Medicine and Rehabilitation
