Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Volterra series modelling and compensation of non-linear distortions caused by susceptibility difference artefacts related to the presence of ferromagnetic implants in magnetic resonance imaging
Autore:
Bui, FM; Li, JC; Bott, K; Mintchev, MP;
Indirizzi:
Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada Univ Calgary Calgary AB Canada T2N 1N4 Engn, Calgary, AB T2N 1N4, Canada GE MEd Syst Canada, St Laurent, PQ H4M 2X4, Canada GE MEd Syst Canada St Laurent PQ Canada H4M 2X4 urent, PQ H4M 2X4, Canada Univ Alberta, Dept Surg, Edmonton, AB T6G 2B7, Canada Univ Alberta Edmonton AB Canada T6G 2B7 urg, Edmonton, AB T6G 2B7, Canada
Titolo Testata:
MEDICAL ENGINEERING & PHYSICS
fascicolo: 3, volume: 23, anno: 2001,
pagine: 207 - 215
SICI:
1350-4533(200104)23:3<207:VSMACO>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
ARTIFACTS;
Keywords:
magnetic resonance imaging; magnetic susceptibility difference artefacts; digital image processing; non-linear system identification; Volterra series approach;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Mintchev, MP Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada Univ Calgary Calgary AB Canada T2N 1N4 y, AB T2N 1N4, Canada
Citazione:
F.M. Bui et al., "Volterra series modelling and compensation of non-linear distortions caused by susceptibility difference artefacts related to the presence of ferromagnetic implants in magnetic resonance imaging", MED ENG PHY, 23(3), 2001, pp. 207-215

Abstract

Magnetic resonance imaging is popular in medical settings due to its unique technical characteristics. However, its full potential has been limited by imaging artefacts caused by various phenomena. Previously, a methodology was proposed to characterize and reduce artefacts caused specifically by magnetic susceptibility differences. In the present work, the Volterra seriesapproach is suggested as an alternative method for describing non-linear distortions induced by susceptibility artefacts. A second-order Volterra series is utilized for characterizing the image non-linearities using a block-by-block processing approach. Subsequently, a corresponding second-order inverse Volterra series is applied to compensate for the quantified distortions. In addition, a technique for automatic demarcation of recoverable and non-recoverable regions in magnetic resonance images is proposed to ameliorate the developed methodology. Experimental results indicate that this approach offers improved accuracy and flexibility in reducing nonlinear distortions caused by magnetic susceptibility artefacts. (C) 2001 IPEM. Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 13:12:07