Influence of Availability of Clinical History on Detection of Early Stroke Using Unenhanced CT and Diffusion-Weighted MR Imaging
Mark E. Mullins1,2,
Michael H. Lev1,2,
Dawid Schellingerhout1,2,
Walter J. Koroshetz2,3 and
R. Gilberto Gonzalez1,2
1 Department of Radiology, Division of Neuroradiology, Massachusetts General
Hospital, 55 Fruit St., Boston, MA 02114.
2 Department of Radiology, Harvard Medical School, 25 Shattuck St., Boston, MA
02115.
3 Department of Neurology, Massachusetts General Hospital, Boston, MA
02114.

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Fig. 1A. Left thalamic infarction in 60-year-old man. Unenhanced CT
scan of head obtained 1 hr after patient presented to emergency department
shows small hypodensity within left thalamus (arrow). Finding was
interpreted as showing no evidence of acute stroke.
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Fig. 1B. Left thalamic infarction in 60-year-old man. Urgent
diffusion-weighted MR image obtained 2 hr after A more clearly reveals
small left thalamic infarction (arrow).
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Copyright © 2002 by the American Roentgen Ray Society.