摘要
目的探讨脊柱转移瘤的MR诊断。方法回顾性分析120例脊柱转移瘤的MR表现。结果脊柱转移瘤灶的异常MR表现为:(1)信号异常,在T1WI上,112例(93.3%)呈低信号,8例(6.7%)为等或混杂的信号,在T2WI上,89例(74.1%)呈稍高信号,33例(27.5%)为低或混杂信号;(2)病灶可呈跳跃式破坏,椎体附件受累,出现椎旁软组织肿块,但椎间隙保持完整;(3)伴发椎体压缩性骨折的病灶可呈“楔形”、“盘状”或“倒楔形”。脂肪抑制增强扫描可显示病变范围并发现平扫中未能发现的病变。结论MRI是诊断脊柱转移瘤的可靠而重要的手段。
Objective To study the diagnosis of spinal metastases(SM)with magnetic resonance imaging(MRI).Methods MR appearances of 120 patients with SM were analyzed retrospectively.Results The MR findings of SM in all cases showed the following abnormalities:(1)On T1 weighted SE images,112 cases(93.3 % )were hypointensity and 8 cases(6.7 % )were isointensity or heterogeneous intensity.On T2 weighted SE images,89 cases(74.1% )were slight hyperintensity and 33 cases(27.5 % ) were isointensity or heterogeneous internsity;(2)the lesions may be jumpy destruction, the centrum accessory may be invasive,the masses of paravertebral soft tissue may occur.whereas the interverbral disc may keep the integrity;(3)those lesions complicated with vertebral compression fracture may show as 'wedge','discoid'or 'inverted wedge'shape.The contrast enhancement scans with fat saturation may reveal the extent of the lesions and may find the undiscovered lesions on plain scans.Conclusion MRI is a reliable and important method in the diagnosis of spinal metastasis.
出处
《实用医学影像杂志》
2003年第1期17-19,共3页
Journal of Practical Medical Imaging