Lack of flow on time-of-flight MR angiography does not always indicate occlusion

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Abstract

SUMMARY

A patient presented acutely with symptoms of cerebellar ischaemia. While non-contrast CT imaging was normal, MRI demonstrated an apparent occlusion of the left vertebral artery on time-of-flight angiography. However, concurrent contrast enhanced MR angiography (and subsequent CT angiography) demonstrated normal contrast filling of the left vertebral artery.

This article discusses the benefits and limitations of time-of-flight angiography for the investigation of possible stroke and highlights a particular technical limitation which could be misinterpreted as an arterial occlusion.
Original languageEnglish
JournalBJR Case Reports
Early online date6 Nov 2015
DOIs
Publication statusE-pub ahead of print - 6 Nov 2015

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