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Abstract #1983

Performance Metric for Assessment of Reconstructed Magnetic Resonance Image Phase

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, Data Analysis

Motivation: Many deep learning (DL) reconstruction models do not assess the reconstructed phase despite its importance in certain imaging techniques.

Goal(s): To develop a phase-specific metric and demonstrate its suitability for reconstruction assessment.

Approach: We used our developed metric to assess and analyze DL and non-DL reconstruction results in an experiment investigating the effect of coil overlap on DL reconstruction methods. The phase metric results were compared to magnitude metric results.

Results: The phase metric results were consistent with the magnitude metric results and provided useful insights into model performance.

Impact: We propose and test a phase-specific metric that can be used to assess and further the development of complex-valued DL reconstruction methods. This metric would allow for DL reconstruction methods to be applied to MR imaging techniques such as phase contrast imaging.

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