Fast Bias Field Correction for 9.4 Tesla Magnetic Resonance Imaging

Détails

ID Serval
serval:BIB_EFDD608138BE
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Institution
Titre
Fast Bias Field Correction for 9.4 Tesla Magnetic Resonance Imaging
Titre de la conférence
EUSIPCO 2008, 16th European Signal Processing Conference
Auteur(s)
Pena X., Bach Cuadra M., Kunz N., Just N., Gruetter R., Thiran J.P.
Adresse
Lausanne, Switzerland, August 25-28, 2008
Statut éditorial
Publié
Date de publication
2008
Langue
anglais
Résumé
In this paper the problem of intensity inhomogeneity athigh magnetic field on magnetic resonance images isaddressed. Specifically, rat brain images at 9.4Tacquired with a surface coil are bias corrected. Wepropose a low- pass frequency model that takes intoaccount not only background-object contours but alsoother important contours inside the image. Twopre-processing filters are proposed: first, to create avolume of interest without contours, and second, toextrapolate the image values of such masked area to thewhole image. Results are assessed quantitatively andvisually in comparison to standard low pass filterapproach, and they show as expected better accuracy inenhancing image intensity.
Mots-clé
LTS5, Magnetic Resonance Imaging, Inhomogenity correction, Bias field, High Magnetic field, Animal imaging
Site de l'éditeur
Création de la notice
29/11/2011 17:40
Dernière modification de la notice
20/08/2019 17:17
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