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Abstract #1654

Deep Learning Segmentation of Lung Parenchyma For UTE Proton MRI

Christopher Keen1, Peter Šereš1, Justin Grenier1, Robert Stobbe1, Ian Paterson2, Kumar Punithakumar 3, Jacob Jaremko3, and Richard Thompson1
1Department of Biomedical Engineering, University of Alberta, Edmonton, AB, Canada, 2Division of Cardiology, University of Alberta, Edmonton, AB, Canada, 3Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, AB, Canada

Synopsis

Keywords: Machine Learning/Artificial Intelligence, LungAccurate segmentation is required to perform quantitative analysis on lung parenchyma in ultrashort echo time (UTE) proton MRI. Deep learning methods offer a solution to this problem, however, previous application to UTE lung MRI is limited. A deep learning model was trained to segment lung parenchyma using fine tuned region growing masks as a reference. To test the generalizability of the model the performance of three different 3D UTE k-space trajectories were compared. Overall, the model produced high quality segmentation for the different acquisition approaches with improvements over training data in areas of high vessel density and high signal intensity.

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Keywords