脊柱转移瘤的MRI诊断

MRI Diagnosis of Spinal Metatases

目的 :探讨脊柱转移瘤的MRI表现及诊断价值。材料与方法 :回顾性分析 5 2例经临床和病理证实的脊柱转移瘤的MRI表现。结果 :( 1) 5 2例共累及 2 0 9节椎体 ,167节附件 ,“跳跃征”发生率占 71 7%。 ( 2 )病灶T1WI均表现为低信号 ,T2 WI因其类型不同而分为高 ( 2 4 4 % ) ,低 ( 3 0 1% )和混杂 ( 4 5 5 % )信号 ,“晕征”出现率占 2 6 9%。 ( 3 )椎旁肿块、椎管受累和椎间隙狭窄发生率分别为 5 7 1%、 60 7%和 64 3 %。结论 :MRI对脊柱转移瘤的诊断有重要的价值。

Purpose:To explored the MRI signs and diagnostic values of spinal metastases.Materials and Methods:The MRI Features of 52 cases of spinal metastases proved clinically or histologically were analyzed retrospectively.Results:(1)52 cases had destoryed 209 vertebral body and 167 accessory parts.The 'Jump Up'sign occurred in 71 7% cases;(2)Tumors generally appeared hypointense on T 1WI.Depending on different bony destructive types,the signals on T 2WI were divided into three groups:high(24 4%),low (30 1%)and mixed (45 5%).The 'halo' sign occurred in 26 9%.(3)Masses of paravertebra,intraspinal involvement and accessory intervertebral foramen narrow were 57 1%,60 7% and 64 3%.Conclusion:MRI is great practical important in the diagnosis of spinal metastases.