Real-time 3D image registration for functional MRI

Authors
Cox, RW Jesmanowicz, A
Citation
Rw. Cox et A. Jesmanowicz, Real-time 3D image registration for functional MRI, MAGN RES M, 42(6), 1999, pp. 1014-1018
Citations number
12
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging","Medical Research Diagnosis & Treatment
Journal title
MAGNETIC RESONANCE IN MEDICINE
ISSN journal
07403194 → ACNP
Volume
42
Issue
6
Year of publication
1999
Pages
1014 - 1018
Database
ISI
SICI code
0740-3194(199912)42:6<1014:R3IRFF>2.0.ZU;2-R
Abstract
Subject head movements are one of the main practical difficulties with brai n functional MRI. A fast, accurate method for rotating and shifting a three -dimensional (3D) image using a shear factorization of the rotation matrix is described. Combined with gradient descent (repeated linearization) on a least squares objective function, 3D image realignment for small movements can be computed as rapidly as whole brain images can be acquired on current scanners. (C) 1999 Wiley-Liss, Inc.