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Abstract

Intracranial MR angiography: its role in the integrated approach to brain infarction.

B A Johnson, J E Heiserman, B P Drayer and P J Keller
American Journal of Neuroradiology May 1994, 15 (5) 901-908;
B A Johnson
Barrow Neurological Institute, Phoenix, AZ 85031.
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J E Heiserman
Barrow Neurological Institute, Phoenix, AZ 85031.
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B P Drayer
Barrow Neurological Institute, Phoenix, AZ 85031.
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P J Keller
Barrow Neurological Institute, Phoenix, AZ 85031.
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Abstract

PURPOSE To determine the contribution of cranial MR angiography (MRA) for the evaluation of patients with acute and subacute brain infarction.

METHODS MR and MRA studies performed on 78 adult patients with acute and subacute stroke were retrospectively reviewed and correlated with the clinical records.

RESULTS There were 50 acute and 28 subacute infarctions in our series. Five of 78 MRA exams (6%) were nondiagnostic. Sixty examinations (80%) were positive for stenosis or occlusion. The distribution of stenotic or occlusive vascular lesions correlated with the location of infarction in 56 of the 60 positive cases (93%). MRA provided information not obtained from the MR images in 40 cases (55%). One hundred four individual vessels in 8 patients who underwent conventional cerebral angiography were compared with the MRA appearance. The MRA interpretations correlated with the conventional angiographic evaluations for 90 vessels (87%).

CONCLUSIONS Vascular lesions demonstrated on intracranial MRA show a high correlation with infarct distribution. MRA provides information adjunctive to conventional MR in a majority of cases. We conclude that MRA is an important component of the complete evaluation of brain infarction.

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American Journal of Neuroradiology
Vol. 15, Issue 5
1 May 1994
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B A Johnson, J E Heiserman, B P Drayer, P J Keller
Intracranial MR angiography: its role in the integrated approach to brain infarction.
American Journal of Neuroradiology May 1994, 15 (5) 901-908;

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Intracranial MR angiography: its role in the integrated approach to brain infarction.
B A Johnson, J E Heiserman, B P Drayer, P J Keller
American Journal of Neuroradiology May 1994, 15 (5) 901-908;
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