Výsledky vyhledávání - "Olivier M. Girard"

Akademický článek

Inhomogeneous Magnetization Transfer (ihMT) imaging in the acute cuprizone mouse model of demyelination/remyelination

Autor: Andreea Hertanu, Lucas Soustelle, Julie Buron, Julie Le Priellec, Myriam Cayre, Arnaud Le Troter, Valentin H. Prevost, Jean-Philippe Ranjeva, Gopal Varma, David C. Alsop, Pascale Durbec, Olivier M. Girard, Guillaume Duhamel

Publikováno v: NeuroImage, Vol 265, Iss , Pp 119785- (2023)

ABSTRACT: Background: To investigate the association of ihMT (inhom signals with the demyelination and remyelination phases of the acute cuprizone mouse model in comparison with histology, and to assess the extent of tissue damage and repair from MRI

Externí odkaz: https://doaj.org/article/31271adcb7d846dba22fe5a92564e902

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Akademický článek

Spinal cord and brain tissue impairments as long-term effects of rugby practice? An exploratory study based on T1 and ihMTsat measures

Autor: Arash Forodighasemabadi, Guillaume Baucher, Lucas Soustelle, Thomas Troalen, Olivier M. Girard, Maxime Guye, Jean-Baptiste Grisoli, Jean-Philippe Ranjeva, Guillaume Duhamel, Virginie Callot

Publikováno v: NeuroImage: Clinical, Vol 35, Iss , Pp 103124- (2022)

Rugby players are subject to multiple impacts to their head and neck that could have adverse neurological effects and put them at increased risk of neurodegeneration.Previous studies demonstrated altered default mode network and diffusion metrics on

Externí odkaz: https://doaj.org/article/08f2a0ec980f4ae2bde15113b3bef6f6

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Akademický článek

A comprehensive protocol for quantitative magnetic resonance imaging of the brain at 3 Tesla.

Autor: Dvir Radunsky, Chen Solomon, Neta Stern, Tamar Blumenfeld-Katzir, Shir Filo, Aviv Mezer, Anita Karsa, Karin Shmueli, Lucas Soustelle, Guillaume Duhamel, Olivier M Girard, Gal Kepler, Shai Shrot, Chen Hoffmann, Noam Ben-Eliezer

Publikováno v: PLoS ONE, Vol 19, Iss 5, p e0297244 (2024)

Quantitative MRI (qMRI) has been shown to be clinically useful for numerous applications in the brain and body. The development of rapid, accurate, and reproducible qMRI techniques offers access to new multiparametric data, which can provide a compre

Externí odkaz: https://doaj.org/article/da549f9488a349c6b543ca8ba26a3203

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Fast‐spin‐echo versus rapid gradient‐echo for 3D magnetization‐prepared acquisitions: Application to inhomogeneous magnetization transfer

Autor: Manuel Taso, Fanny Munsch, Olivier M. Girard, Guillaume Duhamel, David C. Alsop, Gopal Varma

Publikováno v: Magnetic Resonance in Medicine
Magnetic Resonance in Medicine, 2022, ⟨10.1002/mrm.29461⟩

International audience; To evaluate the benefits of Fast Spin Echo (FSE) imaging over Rapid Gradient-Echo (RAGE) for Magnetization-prepared inhomogeneous Magnetization Transfer (ihMT) imaging. Methods: A 3D FSE sequence was modified to include an ihM

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfcf4c1e9c127fe9a0b013c409e523bc
https://doi.org/10.1002/mrm.29461

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Quantitative magnetization transfer MRI unbiased by on‐resonance saturation and dipolar order contributions

Autor: Lucas Soustelle, Thomas Troalen, Andreea Hertanu, Jean‐Philippe Ranjeva, Maxime Guye, Gopal Varma, David C. Alsop, Guillaume Duhamel, Olivier M. Girard

Publikováno v: Magnetic Resonance in Medicine
Magnetic Resonance in Medicine, 2023, ⟨10.1002/mrm.29678⟩

International audience; To demonstrate the bias in quantitative MT (qMT) measures introduced by the presence of dipolar order and on-resonance saturation (ONRS) effects using magnetization transfer (MT) spoiled gradient-recalled (SPGR) acquisitions,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96cd7b943517d7bac2e0a2d62d16294f
https://amu.hal.science/hal-04103313/document

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T 1D ‐weighted ihMT imaging – Part I. Isolation of long‐ and short‐T 1D components by T 1D ‐filtering

Autor: Andreea Hertanu, Lucas Soustelle, Arnaud Le Troter, Julie Buron, Julie Le Priellec, Victor N. D. Carvalho, Myriam Cayre, Pascale Durbec, Gopal Varma, David C. Alsop, Olivier M. Girard, Guillaume Duhamel

Publikováno v: Magnetic Resonance in Medicine
Magnetic Resonance in Medicine, 2022, ⟨10.1002/mrm.29139⟩

International audience; PurposeTo identify T1D-filtering methods, which can specifically isolate various ranges of T1D components as they may be sensitive to different microstructural properties.MethodsModified Bloch-Provotorov equations describing a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5881ed30bcdc475919339a9e5c25811b
https://doi.org/10.1002/mrm.29139

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T 1D ‐weighted ihMT imaging – Part II. Investigating the long‐ and short‐T 1D components correlation with myelin content. Comparison with R 1 and the macromolecular proton fraction

Autor: Andreea Hertanu, Lucas Soustelle, Julie Buron, Julie Le Priellec, Myriam Cayre, Arnaud Le Troter, Gopal Varma, David C. Alsop, Pascale Durbec, Olivier M. Girard, Guillaume Duhamel

Publikováno v: Magnetic Resonance in Medicine. 87:2329-2346

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6dce3070afe5db6f57df1f2a5235822
https://doi.org/10.1002/mrm.29140

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Inhomogeneous Magnetization Transfer (ihMT) imaging in the acute cuprizone mouse model of demyelination/remyelination

Publikováno v: NeuroImage
NeuroImage, 2022, 265, ⟨10.1016/j.neuroimage.2022.119785⟩

To investigate the association of ihMT (inhom signals with the demyelination and remyelination phases of the acute cuprizone mouse model in comparison with histology, and to assess the extent of tissue damage and repair from MRI data.Acute demyelinat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87c1d7794f3a0630b207cb4fc127c203
https://amu.hal.science/hal-03906754/file/Hertanu-et-al-NI-2022.pdf

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Inhomogeneous magnetization transfer imaging: Concepts and directions for further development

Autor: David C. Alsop, Ece Ercan, Olivier M. Girard, Alex L. Mackay, Carl A. Michal, Gopal Varma, Elena Vinogradov, Guillaume Duhamel

Publikováno v: NMR in Biomedicine
NMR in Biomedicine, 2022, ⟨10.1002/nbm.4808⟩

International audience; Off-resonance radio frequency irradiation can induce the ordering of proton spins in the dipolar fields of their neighbors, in molecules with restricted mobility. This dipolar order decays with a characteristic relaxation time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a34249cb8fd07100d247c5020e8a6b1
https://hal.science/hal-03767121/file/ihmtreviewrevdraft.pdf

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T1-Based Synthetic Magnetic Resonance Contrasts Improve Multiple Sclerosis and Focal Epilepsy Imaging at 7 T

Autor: Jean-Philippe Ranjeva, Thomas Troalen, Tobias Kober, Axel Bartoli, Aurélien Massire, Virginie Callot, Charlotte Seiler, Gilles Brun, Olivier M. Girard, Pierre Lehmann, Maxime Guye, Fabrice Bartolomei, Jean Pelletier, Bertrand Audoin

Publikováno v: Investigative Radiology
Investigative Radiology, Lippincott, Williams & Wilkins, 2021, 56 (2), pp.127-133. ⟨10.1097/RLI.0000000000000718⟩
Investigative Radiology, 2021, 56 (2), pp.127-133. ⟨10.1097/RLI.0000000000000718⟩

Objectives
Ultra-high field magnetic resonance imaging (MRI) (>= 7 T) is a unique opportunity to improve the clinical diagnosis of brain pathologies, such as multiple sclerosis or focal epilepsy. However, several shortcomings of 7 T MRI, such as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::275b062cba8a06c0a3a24c6595a6cd44
https://doi.org/10.1097/rli.0000000000000718

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