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Titolo:
Evaluation of motion and realignment for functional magnetic resonance imaging in real time
Autore:
Mathiak, K; Posse, S;
Indirizzi:
Res Ctr Julich, Inst Med, Julich, Germany Res Ctr Julich Julich GermanyRes Ctr Julich, Inst Med, Julich, Germany Wayne State Univ, Sch Med, Dept Psychiat & Behav Neurosci, Detroit, MI USAWayne State Univ Detroit MI USA ychiat & Behav Neurosci, Detroit, MI USA
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 1, volume: 45, anno: 2001,
pagine: 167 - 171
SICI:
0740-3194(200101)45:1<167:EOMARF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHYSIOLOGICAL ARTIFACTS; FMRI; MRI; ALGORITHM; MOVEMENT; SERIES; BRAIN;
Keywords:
functional MRI; movement artifacts; real time; image processing; least square;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Mathiak, K Univ Tubingen, MEG Zentrum, Otfried Muller Str 47, D-72076 Tubingen, Germany Univ Tubingen Otfried Muller Str 47 Tubingen Germany D-72076y
Citazione:
K. Mathiak e S. Posse, "Evaluation of motion and realignment for functional magnetic resonance imaging in real time", MAGN RES M, 45(1), 2001, pp. 167-171

Abstract

Functional magnetic resonance imaging in real time is an emerging tool forthe assessment of dynamic changes In brain activation. The short response latency (tens of seconds) renders the technique more sensitive to motion artifacts. Motion correction in real time requires computationally efficient algorithms which can be executed on a complete 3D data set within a single time of repetition cycle. In this study, a method to evaluate motion and realign functional images in real time implemented on standard imaging hardware is introduced. The detection of activity in correlation maps is improved, and artifactual edge enhancements are reduced. As the estimation of largemovements is stable, this algorithm is attractive for clinical studies with uncooperative patients. Magn Reson Med 45:167-171, 2001. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/02/20 alle ore 07:54:07