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Abstract #1053

Size-adaptable 13-channel receive array for brain imaging in human neonates at 3 T

Nibardo Lopez Rios1,2, Alexandru Foias1, Gregory Lodygensky3,4,5, Nikola Stikov1,5, Mathieu Dehaes3,6,7, and Julien Cohen-Adad1,8

1NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montreal, Montreal, QC, Canada, 2Medical Biophysics Center, University of Oriente, Santiago de Cuba, Cuba, 3Sainte-Justine Hospital University Center, Montreal, QC, Canada, 4Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QC, Canada, 5Montreal Heart Institute, Montreal, QC, Canada, 6Department of Radiology, Radio-oncology and Nuclear Medicine, University of Montreal, Montreal, QC, Canada, 7Institute of Biomedical Engineering, University of Montreal, Montreal, QC, Canada, 8Functional Neuroimaging Unit, CRIUGM, University of Montreal, Montreal, QC, Canada

A size-adaptable receive array that can accommodate a variety of heads in a pediatric population (27-week-premature to 1.5-month-old) is proposed. Thirteen spherically distributed loops can move in radial and axial directions to maximize their proximity to the subject. Decoupling between elements is ensured by strong preamplifier decoupling (-27 to -33 dB). Tests on a scanner with two phantoms (8 and 10 cm in diameter) resulted in higher SNR with the proposed coil compared to 8-Ch and 32-Ch commercial head coils. The method restricts head motion and could be of interest for other size-varying body parts, such as breast and limbs.

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