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Abstract #0351

Coil Geometry Effects on Deep-learning-based MR Image Reconstruction

Natalia Dubljevic1,2,3, Stephen Moore2,3,4, Michel Louis Lauzon2,3,5, Roberto Souza3,6, and Richard Frayne2,3,5
1Biomedical Engineering, University of Calgary, Calgary, AB, Canada, 2Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, AB, Canada, 3Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada, 4O'Brien Centre for the Health Sciences, Cumming School of Medicine, Calgary, AB, Canada, 5Radiology and Clinical Neuroscience, University of Calgary, Calgary, AB, Canada, 6Electrical and Software Engineering, University of Calgary, Calgary, AB, Canada

Synopsis

Keywords: AI/ML Image Reconstruction, Image Reconstruction

Motivation: Parallel imaging coil constraints can make it difficult to design comfortable coil arrays.

Goal(s): To investigate whether parallel imaging-imposed geometric coil constraints can be relaxed when using a deep learning (DL)-based image reconstruction method as opposed to a traditional non-DL method.

Approach: We synthesized an eight-channel head coil configuration and gradually increased coil overlap making the coils less ideal for parallel imaging. A DL reconstruction method was compared to a traditional non-DL method.

Results: As coil overlap increased, a smaller decrease in reconstruction performance was seen when using a DL method versus a non-DL method.

Impact: Our works suggests parallel imaging geometric coil constraints may be relaxed when using a deep learning reconstruction method. This flexibility would lead to an increased range of coil configurations that allow for improved patient comfort while decreasing scan times.

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Keywords