脊椎转移性肿瘤的MRI表现及诊断价值

MRI Diagnosis of Spinal Metatases

目的 :探讨脊椎转移性肿瘤的MRI表现及诊断价值。方法 :回顾性分析 5 3例经临床和病理证实的脊椎转移性肿瘤的MRI表现。结果 :① 5 3例共累及 10 2节椎体 ,70节附件 ,“跳跃征”发生率占 30 % ;②T1WI因其类型不同而分为低 (83% )、高 (5 % )、等 (10 % )和混杂信号 (2 % ) ,T2 WI分为低 (11% )、高 (42 % )、等 (9% )和混杂信号 (38% ) ;③椎旁肿块、椎管受累和椎间隙狭窄发生率分别为 33%、72 %和 5 3%。结论

Objective To explore the MRI signs and diagnostic values of spinal metatases. Methods The MRI features of 53 cases of spinal metatases proved clinically or histologically were analyzed retrospectively. Results ①53 cases had destroyed 102 vertebral body and 70 accessory parts. The 'jump Up' sign occurred in 30% cases; ②Depending on different types, the signals on T 1WI were divided into four groups: low (83%),high (5%),equal(10%),and mixed(2%);the signals on T 2WI were divided into four groups: low(11%),high(42%),equal(9%),and mixed(38%); ③Masses of paravertebra, intraspinal involvement and accessory intervertebral foramen narrow were 33%?72%and 53%. Conclusion MRI is of practical importance in the diagnosis of spinal metastases.