Document Detail

MRI of angiographically occult vascular malformations.
MedLine Citation:
PMID:  3486567     Owner:  NLM     Status:  MEDLINE    
Eleven patients with 15 angiographically occult arteriovenous malformations were studied by magnetic resonance (MR) imaging and computed tomography (CT). Five patients had biopsy proof; six were clinically diagnosed from the long-term clinical follow-up (more than 3 years) and imaging features. Of the 15 lesions, 11 were recognized by both CT and MR. Each method was falsely negative for two lesions. The most useful contribution of MR in the characterization of angiographically occult arteriovenous malformations was the depiction of hemorrhagic foci in 12 of 13 lesions seen on MR. High-attenuation foci indicative of hematomas were seen in only five lesions on CT; the rest were iso- or hypoattenuating. CT detected two very small lesions, in one case as punctate foci of enhancement and in the other as punctate calcification, that were not seen with MR. MR complements CT in characterizing angiographically occult arteriovenous malformations and in distinguishing them from similar-appearing lesions, in particular, small neoplasms. However, when such lesions are seen with only focal calcification and subtle enhancement on CT, routine MR may miss them.
L Lemme-Plaghos; W Kucharczyk; M Brant-Zawadzki; A Uske; M Edwards; D Norman; T H Newton
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  146     ISSN:  0361-803X     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  1986 Jun 
Date Detail:
Created Date:  1986-06-13     Completed Date:  1986-06-13     Revised Date:  2008-02-15    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1223-8     Citation Subset:  AIM; IM    
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MeSH Terms
Brain Neoplasms / radiography
Calcinosis / radiography
Child, Preschool
Diagnosis, Differential
Evaluation Studies as Topic
Hematoma / radiography
Intracranial Arteriovenous Malformations / diagnosis*,  radiography
Magnetic Resonance Spectroscopy / diagnostic use*
Middle Aged
Tomography, X-Ray Computed

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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