4045
Characterizing Knee Osteoarthritis Progression with Structural Phenotypes using MRI and Deep Learning
Nikan K Namiri1, Jinhee Lee1, Bruno Astuto1, Felix Liu1, Rutwik Shah1, Sharmila Majumdar1, and Valentina Pedoia1
1Department of Radiology and Biomedical Imaging and Center for Intelligent Imaging, University of California, San Francisco, San Francisco, CA, United States
We built an end-to-end deep learning model to rapidly stratify knees into morphological phenotypes using a large, longitudinal cohort with knee OA. We examined associations of phenotypes with the odds of having concurrent OA as well as the odds of OA progression.
Figure 1. Receiver operating characteristic curves with area under curve (AUC), accuracy, sensitivity, and specificity of the neural network phenotype classifiers. Metrics reported in mean ± standard deviation.
Table 4. Association between phenotypes and longitudinal OA outcomes. We only considered bone and meniscus/cartilage phenotypes in structural OA analyses because the number of baseline knees with inflammatory and hypertrophy phenotypes who acquired structural OA at 48 months were 3 and 2, respectively.