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Diffusion-Weighted MRI in Transient Global Amnesia Precipitated by Cerebral Angiography
Stroke 28:2311-2314, Woolfenden,A.R.,et al, 1997
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Article Abstract
A 44 year old man underwent posterior circulation cerebral angiography for the investigation of episodic vertigo.Shortly after completion of the procedure,he was noted to have symptoms of transient global amnesia. Diffusion-weighted MRI at 6 and 44 hours after the procedure demonstrated increased signal in the right hippocampus and other areas within the posterior circulation bilaterally consistent with ischemia from emboli. Abnormalities on conventional MRI images performed at the same time points were noted only in retrospect.A followup MRI at 2 months was normal. Ischemia from cerebral emboli may cause transient global amnesia precipitated by cerebral angiography.Diffusion-weighted MRI may be useful in defining the pathophysiology.
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angiography,cerebral
angiography,neurologic complications with
cerebral embolism
embolism
hippocampal infarction
hippocampus
iatrogenic neurologic disorders
MRI
MRI,abnormal
MRI,diffusion weighted
precipitating factors
transient global amnesia
transient global amnesia,precipitating events
transient neurologic deficit
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