Type

Conference Proceedings

Authors

Kieran Moran
Noel E. O'Connor
Kevin McGuinness
Joseph Antony

Subjects

Computer Science

Topics
artificial intelligence regression classification convolutional neural network knee osteoarthritis kl grades wndchrm image processing machine learning

Quantifying radiographic knee osteoarthritis severity using deep convolutional neural networks (2016)

Abstract This paper proposes a new approach to automatically quantify the severity of knee osteoarthritis (OA) from radiographs using deep convolutional neural networks (CNN). Clinically, knee OA severity is assessed using Kellgren & Lawrence (KL) grades, a five point scale. Previous work on automatically predicting KL grades from radiograph images were based on training shallow classifiers using a variety of hand engineered features. We demonstrate that classification accuracy can be significantly improved using deep convolutional neural network models pre-trained on ImageNet and fine-tuned on knee OA images. Furthermore, we argue that it is more appropriate to assess the accuracy of automatic knee OA severity predictions using a continuous distance-based evaluation metric like mean squared error than it is to use classification accuracy. This leads to the formulation of the prediction of KL grades as a regression problem and further improves accuracy. Results on a dataset of X-ray images and KL grades from the Osteoarthritis Initiative (OAI) show a sizable improvement over the current state-of-the-art.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Computer Science: Artificial intelligence
Ireland -> Dublin City University -> Subject = Computer Science: Image processing
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Health and Human Performance
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: INSIGHT Centre for Data Analytics
Ireland -> Dublin City University -> Subject = Computer Science: Machine learning

Full list of authors on original publication

Kieran Moran, Noel E. O'Connor, Kevin McGuinness, Joseph Antony

Experts in our system

1
Kieran Moran
Dublin City University
Total Publications: 156
 
2
Noel E. O'Connor
Dublin City University
Total Publications: 474
 
3
Kevin McGuinness
Dublin City University
Total Publications: 93
 
4
Joseph Antony
Dublin City University
Total Publications: 10