A Hybrid RF Coil for Whole-Brain Imaging in Non-Human Primates at 7 T.
Overview
- Cognitive Neuroimaging Unit, INSERM, CEA Université Paris‐Saclay, NeuroSpin Center GIF‐SUR‐YVETTE France
- BAOBAB Université Paris‐Saclay, CEA/Joliot/NeuroSpin GIF‐SUR‐YVETTE France
- Université Paris‐Saclay, CEA/DRF/IRFU/DACM GIF‐SUR‐YVETTE France
Abstract
Purpose: Ultra‐high field MRI (≥ 7 T) offers unprecedented potential for mapping non‐human primate (NHP) brain function. However, complex electromagnetic systems are required to meet the challenges of UHF imaging and the mechanical demands of awake NHP studies. To address these challenges, we developed a hybrid RF coil system optimized for whole‐brain fMRI of macaques at 7 T.
Methods: The hybrid coil system combines a 6‐channel preamplifier‐decoupled transceive dipole array with a 16‐channel loop receive array, housed in a compact structure designed for awake imaging that maintains open visual fields. Key design features include compatibility with sphinx‐position monkey chairs and head fixation systems required for awake experiments. Electromagnetic simulations guided dipole design to optimize uniform transmit performance and deep penetration. Phantom and in vivo experiments validated these predictions using anesthetized macaques and evaluated the system's readiness for awake imaging.
Results: The hybrid coil demonstrated uniform B1+ distribution with phase‐shimmed transmission across the brain. It supported robust parallel imaging, enabling up to R = 3 × 2 acceleration factors for high‐resolution acquisitions. The achieved whole‐brain tSNR in fMRI is comparable to that of an existing 8‐TX/
Conclusion: By effectively addressing both the technical challenges of ultra‐high field MRI and the mechanical constraints associated with visual stimulation in awake NHPs, this hybrid coil system provides a powerful tool for advancing our understanding of primate brain function.
Reproduced under the paper's license (CC BY), from the paper cited above.
Code
The paper says that its authors' code is available on request: it was not published with the paper, so there is nothing to verify.
The paper's code and data availability statement is in the Data section.
Tracing map
A tracing map links a paper to the code its authors published: this paper has none (its code is available on request), so it has no map.
Data
No dataset and no data link were found in the paper.
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request. Raw data and code used in the present study can be made available from the corresponding author upon request.
Reproduced under the paper's license (CC BY), from the paper cited above.
Versions
The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.
Version 1, 30 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 6 authors, 5 keywords, 9 MeSH terms, 3 funders, 66 references.
Cite
This paper
Djaballah, E., Giacomini, É., Gapais, P., Luong, M., Amadon, A., & Zhu, Q. (2026). A Hybrid RF Coil for Whole-Brain Imaging in Non-Human Primates at 7 T. Magnetic resonance in medicine, 96(2), 996-1010. https://
BibTeX
@article{djaballah2026hy
author = {Djaballah, Elias and Giacomini, Éric and Gapais, Paul‐François and Luong, Michel and Amadon, Alexis and Zhu, Qi},
title = {{A Hybrid RF Coil for Whole-Brain Imaging in Non-Human Primates at 7 T}},
journal = {Magnetic resonance in medicine},
year = {2026},
month = mar,
volume = {96},
number = {2},
pages = {996--1010},
publisher = {Wiley},
issn = {0740-3194},
doi = {10.1002/
url = {https://
pmid = {41876923},
pmcid = {PMC13269185}
}
RIS
TY - JOUR
AU - Djaballah, Elias
AU - Giacomini, Éric
AU - Gapais, Paul‐François
AU - Luong, Michel
AU - Amadon, Alexis
AU - Zhu, Qi
TI - A Hybrid RF Coil for Whole-Brain Imaging in Non-Human Primates at 7 T
T2 - Magnetic resonance in medicine
J2 - Magn Reson Med
PY - 2026
DA - 2026/
VL - 96
IS - 2
SP - 996
EP - 1010
SN - 0740-3194
PB - Wiley
DO - 10.1002/
UR - https://
LA - en
ER -
CSL-JSON
{
"id": "10.1002/
"type": "article-journal",
"title": "A Hybrid RF Coil for Whole-Brain Imaging in Non-Human Primates at 7 T",
"container-title": "Magnetic resonance in medicine",
"author": [
{
"family": "Djaballah",
"given": "Elias"
},
{
"family": "Giacomini",
"given": "Éric"
},
{
"family": "Gapais",
"given": "Paul‐François"
},
{
"family": "Luong",
"given": "Michel"
},
{
"family": "Amadon",
"given": "Alexis"
},
{
"family": "Zhu",
"given": "Qi"
}
],
"container-title-short":
"volume": "96",
"issue": "2",
"page": "996-1010",
"DOI": "10.1002/
"PMID": "41876923",
"PMCID": "PMC13269185",
"ISSN": "0740-3194",
"publisher": "Wiley",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
[
2026,
3,
24
]
]
}
}
Similar papers
The papers with a page that share the most with this one: the tools found in their code, their categories, datasets, cited references and authors, the rarest counting most.
- [1] doi:10.1162/imag.a.1354 [code]
- Development of a 24-channel 3T phased-array coil for fMRI in awake monkeys: Mitigating spatiotemporal artifacts in ferumoxytol-weighted functional connectivity estimation.Journal: Imaging neuroscience (Cambridge, Mass.)In common: non-human primate, fMRI, 14 references
- [2] doi:10.1162/imag_a_00077 [code]
- MEBRAINS 1.0: A new population-based macaque atlas.Journal: Imaging neuroscience (Cambridge, Mass.)In common: non-human primate, 8 references, author Qi Zhu
- [3] doi:10.1038/s41467-025-63962-6 [code]
- Mesoscale functional organization of face and body areas in the macaque brain.Journal: Nature communicationsIn common: non-human primate, fMRI, systems, 5 references, author Qi Zhu
- [4] doi:10.1162/imag.a.108
- High-resolution fMRI reveals a dorsal brain pathway selective for conspecific vocalizations in macaques.Journal: Imaging neuroscience (Cambridge, Mass.)In common: non-human primate, fMRI, 5 references, author Qi Zhu
- [5] doi:10.1162/imag.a.1362 [code]
- Human fMRI at 11.7T: Assessing feasibility, stability, and reliability on the Iseult scanner.Journal: Imaging neuroscience (Cambridge, Mass.)In common: fMRI, 3 references, author Alexis Amadon
- [6] doi:10.1523/eneuro.0173-23.2024 [code]
- Resting-State Networks of Awake Adolescent and Adult Squirrel Monkeys Using Ultra-High Field (9.4 T) Functional Magnetic Resonance Imaging.Journal: eNeuroIn common: non-human primate, fMRI, 6 references
- [7] doi:10.1162/imag_a_00202
- Multiple focal pulvinar projection fields in the macaque cortex.Journal: Imaging neuroscience (Cambridge, Mass.)In common: non-human primate, fMRI, 3 references, author Qi Zhu
- [8] doi:10.1038/s41592-024-02472-7 [code]
- In vivo imaging of the human brain with the Iseult 11.7-T MRI scanner.Journal: Nature methodsIn common: 2 references, author Alexis Amadon
- [9] doi:10.1038/s41398-025-03757-x
- Functional vs anatomical cortico-striatal connectivity in the macaque brain.Journal: Translational psychiatryIn common: non-human primate, fMRI, 6 references
- [10] doi:10.1002/nbm.70228 [code]
- Transceiver 16-Channel Coaxial-End Dipole Array for Combined Head and C-Spine MRI at 9.4 T.Journal: NMR in biomedicineIn common: 5 references
Contribute
The authors of this paper can claim it, correct its record and validate its tracing map, and the maintainers of its code (its owner, or a public member of its organization) correct what it says of their repository; anyone signed in can ask for its removal. Every request goes to OSCR's own machine, which answers it; your account page follows them.
Sign in with ORCID to claim this paper as one of its authors, correct its record or validate its tracing map: when the paper's metadata lists your ORCID iD, you are recognized at once. Maintainers of its code: sign in with GitHub, then claim the repository on your account page.
Claim this paper
Correct its record
Say what each link of this record is, remove the ones that are not the paper's, add the ones that are missing. The correction becomes a new version of the record, in its Versions section.
Request its removal
To ask OSCR to remove this record, the copies of its authors' scripts or its tracing map, use the removal request page: signed in, you say who you are, what to remove and why, then review and confirm the request. Published rules decide every request (how).
Discussion, reproductions, activity
Discussion: code errors and mismatches between the code and the paper about this paper and its code, from readers and its authors, beside the paper and its tracing map.
Reproductions: reports from readers who ran the authors' code and did not get the paper's result, what they ran, with which environment, commit and data.
Activity: what happens around this paper: new versions of its record, its map's validation, discussions and reproductions. It opens with sign-in.