Výsledky vyhledávání - "Samira, Mchinda"

A strategy to reduce the sensitivity of inhomogeneous Magnetization Transfer (ihMT) imaging to radiofrequency transmit field variations at 3 T

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

Publikováno v: Magnetic Resonance in Medicine
Magnetic Resonance in Medicine, Wiley, 2021, ⟨10.1002/mrm.29055⟩
Magnetic Resonance in Medicine, 2021, ⟨10.1002/mrm.29055⟩

International audience; PurposeTo minimize the sensitivity of inhomogeneous magnetization transfer gradient-echo (ihMT-GRE) imaging to radiofrequency (RF) transmit field (urn:x-wiley:07403194:media:mrm29055:mrm29055-math-0003) inhomogeneities at 3 T.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb76a98335738978ac3c3713037e9e2a
https://hal.archives-ouvertes.fr/hal-03429467/file/MRM-hal.pdf

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MRI assessment of multiple dipolar relaxation time ( T 1 D ) components in biological tissues interpreted with a generalized inhomogen

Autor: Victor N.D. Carvalho, Andreea Hertanu, Axelle Grélard, Samira Mchinda, Lucas Soustelle, Antoine Loquet, Erick J. Dufourc, Gopal Varma, David C. Alsop, Pierre Thureau, Olivier M. Girard, Guillaume Duhamel

Publikováno v: Journal of Magnetic Resonance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=r3c4b2081b22::8e599b62b32a1f1eb397780ebfc770e5

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Whole brain inhomogeneous magnetization transfer (ihMT) imaging: Sensitivity enhancement within a steady‐state gradient echo sequence

Autor: Arnaud Le Troter, Samira Mchinda, Jean Pelletier, David C. Alsop, Jean-Philippe Ranjeva, Gopal Varma, Olivier M. Girard, Stanislas Rapacchi, Maxime Guye, Guillaume Duhamel, Valentin H. Prevost

Publikováno v: Magnetic Resonance in Medicine
Magnetic Resonance in Medicine, 2017, ⟨10.1002/mrm.26907⟩
Magnetic Resonance in Medicine, Wiley, 2017, ⟨10.1002/mrm.26907⟩

Purpose To implement, characterize, and optimize an interleaved inhomogeneous magnetization transfer (ihMT) gradient echo sequence allowing for whole-brain imaging within a clinically compatible scan time. Theory and Methods A general framework for i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7bc4359afcf52ef00190db2884c775a
https://doi.org/10.1002/mrm.26907

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MRI assessment of multiple dipolar relaxation time (T

Autor: Victor N D, Carvalho, Andreea, Hertanu, Axelle, Grélard, Samira, Mchinda, Lucas, Soustelle, Antoine, Loquet, Erick J, Dufourc, Gopal, Varma, David C, Alsop, Pierre, Thureau, Olivier M, Girard, Guillaume, Duhamel

Publikováno v: Journal of magnetic resonance (San Diego, Calif. : 1997). 311

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f0df4afece713b2fbf47719e5929ff39
https://pubmed.ncbi.nlm.nih.gov/31887555

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Validating the sensitivity of inhomogeneous magnetization transfer (ihMT) MRI to myelin with fluorescence microscopy

Autor: Olivier M. Girard, Pascale Durbec, Myriam Cayre, Andreea Hertanu, Gopal Varma, David C. Alsop, Samira Mchinda, Guillaume Duhamel, Valentin H. Prevost, Victor Carvalho

Publikováno v: NeuroImage
NeuroImage, Elsevier, 2019, 199, pp.289-303. ⟨10.1016/j.neuroimage.2019.05.061⟩
NeuroImage, 2019, 199, pp.289-303. ⟨10.1016/j.neuroimage.2019.05.061⟩

International audience; Inhomogeneous Magnetization Transfer (ihMT) is a development from the MT MRI technique. IhMT can be considered as a dipolar order relaxation time (T1D) weighted imaging modality whose signal has shown an enhanced selectivity f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b751d25a0394c319a946f33d07086d8

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MRI assessment of multiple dipolar relaxation time (T1D) components in biological tissues interpreted with a generalized inhomogeneous magnetization transfer (ihMT) model

Autor: David C. Alsop, Andreea Hertanu, Pierre Thureau, Guillaume Duhamel, Axelle Grélard, Samira Mchinda, Antoine Loquet, Gopal Varma, Lucas Soustelle, Erick J. Dufourc, Victor Carvalho, Olivier M. Girard

Publikováno v: Journal of Magnetic Resonance. 311:106668

T 1 D , the relaxation time of dipolar order, is sensitive to slow motional processes. Thus T 1 D is a probe for membrane dynamics and organization that could be used to characterize myelin, the lipid-rich membrane of axonal fibers. A mono-component

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e599b62b32a1f1eb397780ebfc770e5
https://doi.org/10.1016/j.jmr.2019.106668

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Low duty-cycle pulsed irradiation reduces magnetization transfer and increases the inhomogeneous magnetization transfer effect

Autor: Samira Mchinda, Guillaume Duhamel, Valentin H. Prevost, Gopal Varma, Aaron K. Grant, Olivier M. Girard, David C. Alsop

Publikováno v: Journal of Magnetic Resonance
Journal of Magnetic Resonance, 2018, 296, pp.60-71. ⟨10.1016/j.jmr.2018.08.004⟩
Journal of Magnetic Resonance, Elsevier, 2018, 296, pp.60-71. ⟨10.1016/j.jmr.2018.08.004⟩

International audience; Intense off-resonant RF irradiation can lead to saturation of the macromolecular pool magnetization and enhance bound pool dipolar order responsible for the inhomogeneous magnetization transfer (ihMT) effect, but the intensity

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b8124c6fa1ac7a5b2961046329ba765
https://amu.hal.science/hal-02059549

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Evaluation of the Sensitivity of Inhomogeneous Magnetization Transfer (ihMT) MRI for Multiple Sclerosis

Autor: E. Van Obberghen, Jean-Philippe Ranjeva, Gopal Varma, Patrick Viout, Olivier M. Girard, A. Le Troter, Samira Mchinda, Jean Pelletier, David C. Alsop, Maxime Guye, Guillaume Duhamel, Valentin H. Prevost

Publikováno v: AJNR Am J Neuroradiol
American Journal of Neuroradiology
American Journal of Neuroradiology, American Society of Neuroradiology, 2018, 39 (4), pp.634-641. ⟨10.3174/ajnr.a5563⟩
American Journal of Neuroradiology, 2018, 39 (4), pp.634-641. ⟨10.3174/ajnr.a5563⟩

International audience; BACKGROUND AND PURPOSE: Inhomogeneous magnetization transfer is a new endogenous MR imaging contrast mechanism that has demonstrated high specificity for myelin. Here, we tested the hypothesis that inhomogeneous magnetization

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c774028a674ba3fa0a5da008c7cac24
https://pubmed.ncbi.nlm.nih.gov/29472299

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Optimization of inhomogeneous magnetization transfer (ihMT) MRI contrast for preclinical studies using dipolar relaxation time (T1D) filtering

Autor: David C. Alsop, Gopal Varma, Guillaume Duhamel, Valentin H. Prevost, Samira Mchinda, Olivier M. Girard

Publikováno v: NMR in Biomedicine
NMR in Biomedicine, 2017, 30 (6), ⟨10.1002/nbm.3706⟩
NMR in Biomedicine, Wiley, 2017, 30 (6), ⟨10.1002/nbm.3706⟩

International audience; A pulsed inhomogeneous magnetization transfer (ihMT)-prepared fast imaging sequence was implemented at 11.75 T for preclinical studies on mouse central nervous system. A strategy based on filtering the ihMT signal originating

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e80af5deb6dd782d4d7e65791cdff72f
https://doi.org/10.1002/nbm.3706

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