Work

Evaluation of performance gains combining high-density receive arrays with transceiver arrays for brain imaging at 7T

Year: 2024

Type: conference-paper

Abstract: Motivation: To improve signal-to-noise-ratio (SNR) in deep brain structures while using high-density receive arrays at 7T. Goal(s): Compare SNR and g-factor performance of conventional transmit-only receive-only arrays with receive arrays combined with transceiver arrays. Approach: Transceive function was introduced on 8Tx63Rx and 16Tx96Rx 7T head coils, so that the number of receive channels during acquisition increased by 8 and 16, respectively. Three healthy volunteers were scanned, and SNR and g-factor maps were calculated for the different configurations. Results: The transceiver configuration provided about 16% increase in the central SNR. At higher acceleration factors, especially the 112-channel receive configuration provided improved g-factor performance. Impact: : High-density receive-only arrays provide high SNR close to the surface while maintaining the central SNR under sample noise dominant conditions. Transceiver loops surrounding the receive array enhances the central SNR at 7T, although not as high as reported at 10.5T.

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: 10.58530/2024/3751

Authors: Shajan Gunamony, Alex Beckett, Nicolas Boulant, David Feinberg

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

Funder: European Commission

Award: Accurate, Reliable and Optimized functional MAgnetic resonance imaging at unprecedented field strength for unique exploration of the human brain