Arterial spin labeling perfusion-weighted MRI for long-term follow-up of a cerebral arteriovenous malformation after stereotactic radiosurgery

Acta Radiologica Short Reports

Kazuhiro Shimizu²  Nobuyuki Kosaka²  Tatsuya Yamamoto²  Hiroki Shioura²  Toshiaki Kodera¹  Ken-ichiro Kikuta¹  Hirohiko Kimura² 

[1] Department of Neurosurgery, Faculty of Medical Sciences, University of Fukui, Fukui, Japan

[2] Department of Radiology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan

关键词: arterial spin labeling (ASL);    radiosurgery;    arteriovenous malformation (AVM);    brain;    Magnetic resonance imaging (MRI);   

Others  :  923848
DOI  :  10.1177/2047981613510160

 received in 2013-09-11, accepted in 2013-10-03,  发布年份 2014

【 摘 要 】

We present a longitudinal series of arterial spin-labeling magnetic resonance imaging (ASL-MRI) in a patient with cerebral arteriovenous malformations (AVMs) treated by stereotactic radiosurgery (SRS). Pretreatment ASL-MRI showed high signal intensity in both the nidus and draining veins, and the latter signal abnormality gradually moved proximally by 14 months after SRS. At 24 months, the signal abnormalities finally disappeared, indicating complete obliteration of the nidus. The hemodynamic changes in the AVM were clearly visualized in the longitudinal ASL-MRI series, thus this non-invasive MR method may be useful not only for detecting AVMs but also for assessment of their response after SRS.

【 授权许可】

   
© The Foundation Acta Radiologica 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav

【 图 表 】

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