Abstract #2700

Four-channel receiver coil array for focused ultrasound spine imaging

Hsin-Ju Lee^1,2, Meaghan O'Reilly^1,2, Ryan M. Jones^1,2, and Fa-Hsuan Lin^1,2

¹Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada, ²Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada

Synopsis

Keywords: MR-Guided Focused Ultrasound, RF Arrays & Systems, Focus Ultrasound

Motivation: MRI with the focused ultrasound treatment on the spine has low image quality, presumably due to a tailored receiver coil array.

Goal(s): A receiver coil array for 3T MRI is developed to image the spine of a large animal during focused ultrasound (FUS) treatment using a flat, large-aperture (25 cm diameter) phased array transducer.

Approach: A 4-channel receiver coil array was built with a housing curved to conform to the back of the specimen.

Results: Structural images with T₁- and T₂-weighted contrast confirmed an SNR gain of approximately 50% using this coil array compared with images acquired using a body coil.

Impact: The FUS-compatible spine MRI receiver coil array will enhance visualization of BSCB openings. As a clinical application, this coil array will also alleviate intraprocedural imaging challenges.

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