Lori-Anne Williams, BESc

1 From the Imaging Division, Lawson Health Research Institute, London, Ontario, Canada (L.A.W., N.G., P.A.P., D.S.L., V.K.H., R.T.T.); Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada (L.A.W., N.G., P.A.P., R.T.T.); Departments of Nuclear Medicine (L.A.W.), Radiology (N.G., R.T.T.), and Maternal and Newborn Health (D.S.L., V.K.H.), St Joseph’s Health Care, 268 Grosvenor St, London, ON, Canada N6A 4V2; and Department of Neurology, Henry Ford Health Systems, Detroit, Mich (J.R.E.). Received November 3, 2003; revision requested January 27, 2004; final revision received July 30; accepted September 29. Supported by the Canadian Foundation for Innovation, the Ontario Innovation Trust, the Ontario Research and Development Corporation Fund, and the Canadian Natural Sciences and Engineering Research Council. J.R.E. supported in part by National Institute of Neurological Disorders and Stroke grant 1P01-NS23393. Address correspondence to L.A.W. (e-mail: [email protected]).