MR双回波成像对成人脊柱病变的定量分析

Quantitative Analysis of Adult Vertebral Lesions Using Dual Echo Magnetic Resonance Imaging

目的:探讨MR双回波成像在成人脊柱病变中的应用。方法:回顾分析本院126例脊柱病变患者,包括31例恶性椎体肿瘤、38例急性椎体良性压缩性骨折、8例血管瘤、26例终板退变、18例局灶性骨髓脂肪变性及5例脊柱感染,计算各种病变正反回波的信号强度比(反相位/正相位,SIR),并对各组病例作对比和分析。结果:各种病变的信号强度比分别为:恶性椎体肿瘤:1.01+0.086;急性良性骨折:0.81+0.085;感染:0.86+0.096;血管瘤:0.54+0.117;终板退变:0.78+0.160;骨髓脂肪变性:0.84+0.210。其中恶性病变与感染以外的良性病变SIR差异均有统计学意义(P<0.05),血管瘤与其他病变SIR差异均有统计学意义(P<0.01),其余各组间SIR差异无统计学意义。结论:双回波成像对脊柱病变的诊断和鉴别诊断有很好的辅助作用。

Objective：To evaluate the use of dual echo MR imaging in adult vertebral lesions. Methods： We retrospectively reviewed 126 cases of adult vertebral lesions, including 31 cases of malignancy, 38 of benign acute compression fracture, 8 of hemangioma, 26 of endplate degeneration, 18 of focal fatty degeneration and 5 of infection, The signal intensity ratios （ SIR, signal intensity at opposed - phase over signal intensity at in - phase） were calculated and compared among these conditions, Results： The SIRs of vertebral lesions were 1. 01 ± 0. 086 for vertebral malignancy, 0.81± 0. 085 for benign acute fracture, 0.86 ±0. 096 for infection, 0.54 ± 0. 117 for hemangioma, 0.78±0. 160 for endplate degeneration, and 0.84 ± 0.210 for focal fatty degeneration. There was a significant difference in SIR between vertebral malignancy and other benign lesions except infections （ P 〈 0.05 ） , as was between hemangioma and other lesions （P 〈0.01 ）, but not among the rest of benign lessions. Conclusion： Dual echo imaging was helpful to make diagnosis and differentiated diagnosis of vertebral lesions.