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CT angiograms were rated good or excellent in 89%of cases whereas MR angiograms were rated good or excellent in 92%of cases.Arterial stenoses or occlusions were present on 43%of CT angiograms,48%of MR angiograms,and 21%of DSAs.Findings were in agreement in 98%of the vessels analyzed by CT angiography and MR angiography.Similarly,there was overall agreement of findings in 99%of vessels analyzed by CT angiography and DSA.None of the patients had any immediate adverse reactions after administration of intravenous nonionic iodinated contrast material.CT angiography is an accurate and safe method for evaluating arterial stenoses or occlusions in the vessels about the circle of Willis.CT angiography should be used in patients with symptoms of acute stroke for whom evaluation of the intracranial vasculature is desirable. |
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anatomy of
angiography,cerebral
anterior cerebral artery,occlusion of
anterior cerebral artery,stenosis of
basilar artery occlusion
carotid artery occlusion,intracranial
carotid artery stenosis
CAT scan
CAT scan,abnormal
CAT scan,angiography
CAT scan,contrast enhanced
CAT scan,early changes in CVA
cerebral arteries
cerebral infarction
cerebral vasculature
cerebrovascular accident
circle of Willis
middle cerebral artery,occlusion of
middle cerebral artery,stenosis of
MRI
MRI,abnormal
MRI,angiography
MRI,CAT scan compared to
posterior cerebral artery occlusion
posterior cerebral artery stenosis
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