脊髓硬脊膜动静脉畸形治疗后的磁共振成像表现
Posttreatment MR findings in spinal dural arteriovenous malformations.
作者信息
Willinsky R A, terBrugge K, Montanera W, Mikulis D, Wallace M C
机构信息
Department of Radiology, Toronto Hospital, University of Toronto, Ontario, Canada.
出版信息
AJNR Am J Neuroradiol. 1995 Nov-Dec;16(10):2063-71.
PURPOSE
To review the MR findings in 17 patients with spinal dural arteriovenous malformations and compare posttreatment MR with clinical outcome in 10 patients.
METHODS
Extramedullary flow voids, cord swelling, and intramedullary signal changes were recorded in 17 patients. Enhancement and vessel cospicuity were assessed in 10 patients given gadopentetate dimeglumine. In 10 patients, follow-up MR was correlated with clinical outcome.
RESULTS
Of the 17 patients, 14 (82%) had abnormal subarachnoid vessels, 11 (65%) had cord enlargement, and 16 (94%) had hyperintensity on T2-weighted images. In 3 patients, the vessels were better seen with contrast, and 6 had cord enhancement. On posttreatment MR, the vessels were no longer evident in 7 of 10 patients, cord swelling resolved in 9 of 9 patients, the the T2 hyperintensity resolved or was less evident in 9 of 9 patients. Eight patients had clinical improvement, and 2 stabilized.
CONCLUSIONS
Follow-up MR showed resolution of most of the findings in spinal dural arteriovenous malformation. There was some correlation between MR and clinical outcome, but MR evaluation could not distinguish those who had improved from those who stabilized.
目的
回顾17例脊髓硬脊膜动静脉畸形患者的磁共振成像（MR）表现，并比较10例患者治疗后的MR表现与临床结果。
方法
记录17例患者的髓外血流空洞、脊髓肿胀及髓内信号变化。对10例接受钆喷酸葡胺检查的患者评估强化情况及血管清晰度。对10例患者，将随访MR表现与临床结果进行关联分析。
结果
17例患者中，14例（82%）有异常蛛网膜下腔血管，11例（65%）有脊髓增粗，16例（94%）在T2加权像上呈高信号。3例患者增强扫描后血管显示更佳，6例有脊髓强化。治疗后MR检查，10例患者中有7例血管不再明显，9例患者中9例脊髓肿胀消退，9例患者中9例T2高信号消退或不明显。8例患者临床症状改善，2例病情稳定。
结论
随访MR显示脊髓硬脊膜动静脉畸形的大多数表现消失。MR表现与临床结果之间存在一定相关性，但MR评估无法区分病情改善者和病情稳定者。
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