User profiles for Alan Evans

Alan Evans, PhD, FRSC, FCAHS, CACC

Distinguished James McGill Professor of Neurology, Victor Dahdaleh Chair in …
Verified email at mcgill.ca
Cited by 195096

A nonparametric method for automatic correction of intensity nonuniformity in MRI data

JG Sled, AP Zijdenbos, AC Evans - IEEE transactions on …, 1998 - ieeexplore.ieee.org
A novel approach to correcting for intensity nonuniformity in magnetic resonance (MR) data
is described that achieves high performance without requiring a model of the tissue classes …

Brain development during childhood and adolescence: a longitudinal MRI study

…, H Liu, A Zijdenbos, T Paus, AC Evans… - Nature …, 1999 - nature.com
Pediatric neuroimaging studies 1, 2, 3, 4, 5, up to now exclusively cross sectional, identify
linear decreases in cortical gray matter and increases in white matter across ages 4 to 20. In …

Automatic 3D intersubject registration of MR volumetric data in standardized Talairach space

…, P Neelin, TM Peters, AC Evans - Journal of computer …, 1994 - journals.lww.com
Objective: In both diagnostic and research applications, the interpretation of MR images of
the human brain is facilitated when different data sets can be compared by visual inspection …

A three-dimensional statistical analysis for CBF activation studies in human brain

KJ Worsley, AC Evans, S Marrett… - Journal of Cerebral …, 1992 - journals.sagepub.com
Many studies of brain function with positron emission tomography (PET) involve the interpretation
of a subtracted PET image, usually the difference between two images under baseline …

A unified statistical approach for determining significant signals in images of cerebral activation

…, AC Vandal, KJ Friston, AC Evans - Human brain …, 1996 - Wiley Online Library
We present a unified statistical theory for assessing the significance of apparent signal
observed in noisy difference images. The results are usable in a wide range of applications, …

Developmental trajectories of brain volume abnormalities in children and adolescents with attention-deficit/hyperactivity disorder

…, CL Ebens, JM Walter, A Zijdenbos, AC Evans… - Jama, 2002 - jamanetwork.com
ContextVarious anatomic brain abnormalities have been reported for attention-deficit/hyperactivity
disorder (ADHD), with varying methods, small samples, cross-sectional designs, and …

Design and construction of a realistic digital brain phantom

…, NJ Kabani, CJ Holmes, AC Evans - IEEE transactions on …, 1998 - ieeexplore.ieee.org
After conception and implementation of any new medical image processing algorithm,
validation is an important step to ensure that the procedure fulfils all requirements set forth at the …

Assessing the significance of focal activations using their spatial extent

…, RSJ Frackowiak, JC Mazziotta, AC Evans - Human brain …, 1994 - Wiley Online Library
Current approaches to detecting significantly activated regions of cerebral tissue use statistical
parametric maps, which are thresholded to render the probability of one or more activated …

Lateralization of phonetic and pitch discrimination in speech processing

RJ Zatorre, AC Evans, E Meyer, A Gjedde - Science, 1992 - science.org
Cerebral activation was measured with positron emission tomography in ten human
volunteers. The primary auditory cortex showed increased activity in response to noise bursts, …

Unbiased average age-appropriate atlases for pediatric studies

V Fonov, AC Evans, K Botteron, CR Almli… - Neuroimage, 2011 - Elsevier
Spatial normalization, registration, and segmentation techniques for Magnetic Resonance
Imaging (MRI) often use a target or template volume to facilitate processing, take advantage of …