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不同序列磁共振成像诊断脊柱损伤的价值研究 被引量:2

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摘要 目的:探讨不同序列磁共振成像在脊柱损伤诊断中的应用价值。方法:选择急性脊柱外伤56例,均采用T1WI、T2WI、STIR、DWI及FLAIR等序列进行MRI检查,比较不同序列对椎体和脊髓损伤的诊断价值。结果:STIR显示损伤椎体内片状高信号113枚;T1WI示椎体内条状、片状低信号92枚;T2WI示椎体内条状、片状高信号87枚;DWI示椎体内片状高信号62枚、条状高信号23枚、等信号28枚;FLAIR示椎体变扁或楔形变72枚。脊髓损伤25例(25处病灶,其中颈段18处,胸段3处,圆锥4处),;所有脊髓损伤STIR、T2WI、DWI呈斑片状或点状高信号,边缘模糊;T1WI示局部低信号12例,其中低信号内斑点状略高信号2例;FLAIR显示局部略高信号14例;所有序列均未见脊髓断裂病例。椎体骨折ADC值为(1.72±0.21)×10-3 mm2/s,正常椎体为(0.25±0.02)×10-3 mm2/s;脊髓损伤ADC值为(0.50±0.03)×10-3 mm2/s,正常脊髓为(1.04±0.08)×10-3 mm2/s。对于椎体骨折的诊断,STIR非常显著优于DWI、T1WI、T2WI及FLAIR(P<0.01);对于脊髓损伤的诊断,T2WI、STIR、DWI非常显著优于FLAIR及T1WI(P<0.01)。结论:STIR可作为急性脊柱损伤的首选扫描序列,DWI可作为重要辅助序列,FLAIR不宜作为常规扫描序列。
机构地区 解放军
出处 《人民军医》 2011年第12期1082-1083,共2页 People's Military Surgeon
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