Published Online
on January 3, 2008

A more recent version of this article appeared on February 1, 2008

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Submitted on May 15, 2007
Revised on June 22, 2007
Accepted on July 19, 2007

Global Hemispheric CT Hypoperfusion May Differentiate Headache With Associated Neurological Deficits and Lymphocytosis From Acute Stroke

Jacqueline A. Pettersen MD, MSc, FRCPC^*; Richard I. Aviv MBChB, FRCR(UK); Sandra E. Black MD, FRCPC; Allan J. Fox MD, FRCPC; Andrew Lim MD; and Brian J. Murray MD, FRCPC

From the LC Campbell Cognitive Neurology Research Unit and Heart and Stroke Foundation Centre for Stroke Recovery (J.A.P., S.E.B.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; the Neuroscience Research Program (J.A.P., R.I.A., S.E.B., A.J.F., B.J.M.), Sunnybrook Research Institute, Toronto, Ontario, Canada; and the Division of Neurology, Department of Medicine (J.A.P., S.E.B., A.L., B.J.M.) and Department of Medical Imaging (R.I.A., A.J.F.), Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.

^* To whom correspondence should be addressed. E-mail: jacqui.pettersen{at}utoronto.ca.

Key words: acute stroke • CT • CT perfusion • HaNDL syndrome • headaches • oligemia