Work

A 6-dipole preamplifier-decoupled parallel-transceive array with a 16-loop receive array for NHP brain imaging at 7 T.

Year: 2024

Type: conference-paper

Abstract: Motivation: Imaging the brains of non-human primates (NHPs) at ultra-high field (UHF) is challenging, especially for whole-brain functional imaging in awake NHPs where high SNR is needed. Goal(s): To design a dedicated system that overcomes challenges associated with UHF imaging and enhances signal-to-noise ratio (SNR) for high-quality NHP brain imaging. Approach: We developed a 6-dipole parallel-transceive array, and a 16-loop receive array, optimized through electromagnetic simulations. We implemented preamplifier-decoupled dipoles to reduce coupling issues. Results: The system showed good preamplifier-decoupling levels. Our dipoles’ implementation reduced experimental noise matching issues and EM simulations shows an SNR improvement. Impact: Our 6pTx/22Rx antenna should improve awake NHP brain imaging at UHF, including transceive preamplifier-decoupled dipoles, designed for a specific imaging setup.

Source: Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition

DOI: 10.58530/2024/1438

Authors: Elias Djaballah, Eric Giacomini, Paul-François Gapais, Alexis Amadon, Qi ZHU

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Award: The effect of oxytocin on primate social behavior: a combined ultra-high-resolution fMRI and focused ultrasound study in macaques

OpenAlex ID: W4404744317

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