Partial volume model for brain MRI scan using MP2RAGE.
Identifieur interne : 000646 ( Main/Exploration ); précédent : 000645; suivant : 000647Partial volume model for brain MRI scan using MP2RAGE.
Auteurs : Quentin Duché [France] ; Hervé Saint-Jalmes [France] ; Oscar Acosta [France] ; Parnesh Raniga [Australie] ; Pierrick Bourgeat [Australie] ; Vincent Doré [Australie] ; Gary F. Egan [Australie] ; Olivier Salvado [Australie]Source :
- Human brain mapping [ 1097-0193 ] ; 2017.
Abstract
MP2RAGE is a T1 weighted MRI sequence that estimates a composite image providing much reduction of the receiver bias, has a high intensity dynamic range, and provides an estimate of T1 mapping. It is, therefore, an appealing option for brain morphometry studies. However, previous studies have reported a difference in cortical thickness computed from MP2RAGE compared with widely used Multi-Echo MPRAGE. In this article, we demonstrated that using standard segmentation and partial volume estimation techniques on MP2RAGE introduces systematic errors, and we proposed a new model to estimate partial volume of the cortical gray matter. We also included in their model a local estimate of tissue intensity to take into account the natural variation of tissue intensity across the brain. A theoretical framework is provided and validated using synthetic and physical phantoms. A repeatability experiment comparing MPRAGE and MP2RAGE confirmed that MP2RAGE using our model could be considered for structural imaging in brain morphology study, with similar cortical thickness estimate than that computed with MPRAGE. Hum Brain Mapp 38:5115-5127, 2017. © 2017 Wiley Periodicals, Inc.
DOI: 10.1002/hbm.23719
PubMed: 28677254
Affiliations:
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sortKey="Duche, Quentin" sort="Duche, Quentin" uniqKey="Duche Q" first="Quentin" last="Duché">Quentin Duché</name><affiliation wicri:level="3"><nlm:affiliation>INSERM, U1099, Rennes, 35000, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM, U1099, Rennes, 35000</wicri:regionArea><placeName><region type="region" nuts="2">Région Bretagne</region></placeName></affiliation></author><author><name sortKey="Saint Jalmes, Herve" sort="Saint Jalmes, Herve" uniqKey="Saint Jalmes H" first="Hervé" last="Saint-Jalmes">Hervé Saint-Jalmes</name><affiliation wicri:level="3"><nlm:affiliation>INSERM, U1099, Rennes, 35000, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INSERM, U1099, Rennes, 35000</wicri:regionArea><placeName><region type="region" nuts="2">Région Bretagne</region></placeName></affiliation></author><author><name sortKey="Acosta, Oscar" sort="Acosta, Oscar" uniqKey="Acosta O" first="Oscar" last="Acosta">Oscar 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Bourgeat</name><affiliation wicri:level="1"><nlm:affiliation>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland</wicri:regionArea><wicri:noRegion>Queensland</wicri:noRegion></affiliation></author><author><name sortKey="Dore, Vincent" sort="Dore, Vincent" uniqKey="Dore V" first="Vincent" last="Doré">Vincent Doré</name><affiliation wicri:level="1"><nlm:affiliation>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland</wicri:regionArea><wicri:noRegion>Queensland</wicri:noRegion></affiliation></author><author><name sortKey="Egan, Gary F" sort="Egan, Gary F" uniqKey="Egan G" first="Gary F" last="Egan">Gary F. Egan</name><affiliation wicri:level="1"><nlm:affiliation>Monash Biomedical Imaging, Monash University, Melbourne, Victoria, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Monash Biomedical Imaging, Monash University, Melbourne, Victoria</wicri:regionArea><wicri:noRegion>Victoria</wicri:noRegion></affiliation></author><author><name sortKey="Salvado, Olivier" sort="Salvado, Olivier" uniqKey="Salvado O" first="Olivier" last="Salvado">Olivier Salvado</name><affiliation wicri:level="1"><nlm:affiliation>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Health and Biosecurity, the Australian eHealth Research Center, Herston, Queensland</wicri:regionArea><wicri:noRegion>Queensland</wicri:noRegion></affiliation></author></analytic><series><title level="j">Human brain mapping</title><idno type="eISSN">1097-0193</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">MP2RAGE is a T1 weighted MRI sequence that estimates a composite image providing much reduction of the receiver bias, has a high intensity dynamic range, and provides an estimate of T1 mapping. It is, therefore, an appealing option for brain morphometry studies. However, previous studies have reported a difference in cortical thickness computed from MP2RAGE compared with widely used Multi-Echo MPRAGE. In this article, we demonstrated that using standard segmentation and partial volume estimation techniques on MP2RAGE introduces systematic errors, and we proposed a new model to estimate partial volume of the cortical gray matter. We also included in their model a local estimate of tissue intensity to take into account the natural variation of tissue intensity across the brain. A theoretical framework is provided and validated using synthetic and physical phantoms. A repeatability experiment comparing MPRAGE and MP2RAGE confirmed that MP2RAGE using our model could be considered for structural imaging in brain morphology study, with similar cortical thickness estimate than that computed with MPRAGE. Hum Brain Mapp 38:5115-5127, 2017. © 2017 Wiley Periodicals, Inc.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Région Bretagne</li></region></list><tree><country name="France"><region name="Région Bretagne"><name sortKey="Duche, Quentin" sort="Duche, Quentin" uniqKey="Duche Q" first="Quentin" last="Duché">Quentin Duché</name></region><name sortKey="Acosta, Oscar" sort="Acosta, Oscar" uniqKey="Acosta O" first="Oscar" last="Acosta">Oscar Acosta</name><name sortKey="Saint Jalmes, Herve" sort="Saint Jalmes, Herve" uniqKey="Saint Jalmes H" first="Hervé" last="Saint-Jalmes">Hervé Saint-Jalmes</name></country><country name="Australie"><noRegion><name sortKey="Raniga, Parnesh" sort="Raniga, Parnesh" uniqKey="Raniga P" first="Parnesh" last="Raniga">Parnesh Raniga</name></noRegion><name sortKey="Bourgeat, Pierrick" sort="Bourgeat, Pierrick" uniqKey="Bourgeat P" first="Pierrick" last="Bourgeat">Pierrick Bourgeat</name><name sortKey="Dore, Vincent" sort="Dore, Vincent" uniqKey="Dore V" first="Vincent" last="Doré">Vincent Doré</name><name sortKey="Egan, Gary F" sort="Egan, Gary F" uniqKey="Egan G" first="Gary F" last="Egan">Gary F. Egan</name><name sortKey="Salvado, Olivier" sort="Salvado, Olivier" uniqKey="Salvado O" first="Olivier" last="Salvado">Olivier Salvado</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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