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01-06-2003 | Diagnostic Neuroradiology

Diagnosis of acute brain-stem infarcts using diffusion-weighed MRI

Authors: H. Toi, M. Uno, M. Harada, K. Yoneda, N. Morita, S. Matsubara, K. Satoh, S. Nagahiro

Published in: Neuroradiology | Issue 6/2003

Abstract

There are many reports on acute cerebral infarcts diagnosed by diffusion-weighted MRI (DWI), but few describe brain-stem infarcts diagnosed by this method. Using the apparent diffusion coefficient (ADC), we studied 18 consecutive patients with brain-stem infarcts who underwent DWI during the acute phase. We calculated and compared the ADC ratio (lesion ADC/contralateral ADC) in 10 patients with brain-stem and 23 with supratentorial cortical infarcts examined within 24 h of the onset of stroke. Ischaemic brain-stem lesions were detected in all 15 patients who underwent DWI more than 3h after the onset, but not in two who had DWI within 3 h of the onset; their ADC ratio was more than 0.95. ADC ratios in patients with brain-stem infarcts decreased as the interval between onset and DWI increased; the decrease was slower than in patients with supratentorial cortical infarcts.

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Title: Diagnosis of acute brain-stem infarcts using diffusion-weighed MRI
Authors: H. Toi
M. Uno
M. Harada
K. Yoneda
N. Morita
S. Matsubara
K. Satoh
S. Nagahiro
Publication date: 01-06-2003
Publisher: Springer-Verlag
Published in: Neuroradiology / Issue 6/2003
Print ISSN: 0028-3940
Electronic ISSN: 1432-1920
DOI: https://doi.org/10.1007/s00234-002-0897-5

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Diagnosis of acute brain-stem infarcts using diffusion-weighed MRI

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