Cerebral arteriovenous malformations: Flow quantitation by means of two- dimensional cardiac-gated phase-contrast MR imaging

B. A. Wasserman, W. Lin, R. W. Tarr, E. M. Haacke, E. Muller

Research output: Contribution to journalArticle

Abstract

PURPOSE: To test two-dimensional cardiac-gated phase-contrast (2DGPC) magnetic resonance (MR) imaging in the evaluation of cerebral arteriovenous malformations (AVMs) and the alterations in flow that accompany embolization therapy. MATERIALS AND METHODS: A 2DGPC sequence was used to measure flow velocity in the feeding vessels and corresponding contralateral vessels (CCVs) of seven patients (six men and one woman, 21-55 years of age; mean, 37 years) with cerebral AVMs and in the vessels of four healthy volunteers (all men; mean age, 22 years). RESULTS: In the patients, the flow in the feeding vessels exceeded the flow in the CCVs by a margin far greater than the asymmetry in flow in the volunteers. The mean reduction in flow after embolization was 54.9% ± 11.1 in embolized feeding vessels (n = 6) and 5.3% ± 2.8 in nonembolized vessels (n = 3). Postembolization flow enhancement was observed in the CCV (n = 2), which suggests a degree of autoregulatory dysfunction. CONCLUSION: This technique can be used to evaluate the flow patterns of AVMs and the hemodynamic changes that occur with embolization.

Original languageEnglish (US)
Pages (from-to)681-686
Number of pages6
JournalRADIOLOGY
Volume194
Issue number3
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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