Deep Learning Analysis of Cardiac MRI in Legacy Datasets: Multi-Ethnic Study of Atherosclerosis

• URL: http://arxiv.org/abs/2110.15144v1
• Date: Thu, 28 Oct 2021 14:18:21 GMT
• Title: Deep Learning Analysis of Cardiac MRI in Legacy Datasets: Multi-Ethnic Study of Atherosclerosis
• Authors: Avan Suinesiaputra, Charlene A Mauger, Bharath Ambale-Venkatesh, David A Bluemke, Josefine Dam Gade, Kathleen Gilbert, Mark Janse, Line Sofie Hald, Conrad Werkhoven, Colin Wu, Joao A Lima, Alistair A Young
• Abstract summary: The Multi-Ethnic Study of Atherosclerosis (MESA) was the first large cohort study to incorporate cardiovascular MRI in over 5000 participants, and there is now a wealth of follow-up data over 20 years. We describe an automated atlas construction pipeline using deep learning methods applied to the legacy cardiac MRI data in MESA.
• Score: 0.4585572408645652
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The shape and motion of the heart provide essential clues to understanding the mechanisms of cardiovascular disease. With the advent of large-scale cardiac imaging data, statistical atlases become a powerful tool to provide automated and precise quantification of the status of patient-specific heart geometry with respect to reference populations. The Multi-Ethnic Study of Atherosclerosis (MESA), begun in 2000, was the first large cohort study to incorporate cardiovascular MRI in over 5000 participants, and there is now a wealth of follow-up data over 20 years. Building a machine learning based automated analysis is necessary to extract the additional imaging information necessary for expanding original manual analyses. However, machine learning tools trained on MRI datasets with different pulse sequences fail on such legacy datasets. Here, we describe an automated atlas construction pipeline using deep learning methods applied to the legacy cardiac MRI data in MESA. For detection of anatomical cardiac landmark points, a modified VGGNet convolutional neural network architecture was used in conjunction with a transfer learning sequence between two-chamber, four-chamber, and short-axis MRI views. A U-Net architecture was used for detection of the endocardial and epicardial boundaries in short axis images. Both network architectures resulted in good segmentation and landmark detection accuracies compared with inter-observer variations. Statistical relationships with common risk factors were similar between atlases derived from automated vs manual annotations. The automated atlas can be employed in future studies to examine the relationships between cardiac morphology and future events.

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