Magnetic resonance imaging of spinal arteriovenous malformations
1987; American Association of Neurological Surgeons; Volume: 66; Issue: 6 Linguagem: Inglês
10.3171/jns.1987.66.6.0830
ISSN1933-0693
AutoresJohn L. Doppman, Giovanni Di Chiro, Andrew J. Dwyer, Joseph L. Frank, Edward H. Oldfield,
Tópico(s)Intracranial Aneurysms: Treatment and Complications
Resumo✓ Magnetic resonance imaging (MRI) was performed on 12 patients with spinal arteriovenous malformations (AVM's). Six lesions were intramedullary, five were dural, and one was in a posterior extramedullary location. Serpentine filling defects similar to the classic myelographic findings were demonstrated within the high-signal cerebrospinal fluid on T 2 -weighted coronal scans. The intramedullary nidus was identified by MRI as an area of low-signal intensity within the cord in all six intramedullary AVM's. Neither the dural nor the posterior extramedullary lesions showed intramedullary components. It is concluded that MRI may noninvasively provide the initial diagnosis of a spinal AVM and distinguish intramedullary from dural and extramedullary lesions.
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