| titre : |
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Construction and evaluation of a quantitative arterial spin labeling brain perfusion template at 3T |
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| auteur(s) : |
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Jan Petr ( ) 1, Jean-Christophe Ferré1, 2, 3, Elise Bannier3, Hélène Raoult2, Jean-Yves Gauvrit1, 2, 3, Christian Barillot1, 3 |
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| laboratoire : |
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| résumé : |
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Arterial spin labeling (ASL) allows non-invasive imaging and quantification of brain perfusion by magnetically labeling blood in the brain-feeding arteries. ASL has been used to study cerebrovascular diseases, brain tumors and neurodegenerative disorders as well as for functional imaging. The use of a perfusion template could be of great interest to study inter-subject regional variation of perfusion and to perform automatic detection of individual perfusion abnormalities. However, low spatial resolution and partial volume effects (PVE) issues inherent to ASL acquisitions remain to be solved. The purpose of this study is to enhance the template quality by using DARTEL non-rigid registration and by correcting for PVE. PICORE-Q2TIPS ASL datasets were acquired on 25 healthy volunteers at 3T. Four methods of creating the template were evaluated using leave-one-out cross correlation. Subsequently, these methods were applied to hyper-perfusion detection on functional ASL data of 8 healthy volunteers and compared with the standard generalized linear model (GLM) activation detection. |
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| domaine : |
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langue du texte
intégral : |
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Anglais |
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| ISSN : |
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1945-7928 |
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| type de publication : |
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Communications avec actes |
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| DOI : |
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10.1109/ISBI.2011.5872578 |
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| titre de l'ouvrage : |
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8th IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI'2011) |
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| Audience : |
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internationale |
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| date de publication : |
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30/03/2011 |
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| page, identifiant, ... : |
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1035 |
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| titre de la conférence : |
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8th IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI'2011) |
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| date de la conférence : |
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30/03/2011 |
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| ville : |
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Chicago |
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| pays : |
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États-Unis |
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| mots-clés auteur : |
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arterial spin labeling – MRI – partial volume – functional MRI – atlases |
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