arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.08136cs.CVcs.LG

Optimising Knee Injury Detection with Spatial Attention and Validating Localisation Ability

Science Foundation Ireland Centre for Research Training in Machine Learning(爱尔兰科学基金会机器学习研究中心);School of Medicine, University College Dublin(都柏林大学医学院);Department of Radiology, Mater Misericordiae University Hospital, Dublin(慈悲圣母大学医院放射科);School of Electronic Engineering, University College Dublin(都柏林大学电子工程学院);School of Computer Science, University College Dublin(都柏林大学计算机科学学院);Insight Centre for Data Analytics, University College Dublin, Dublin, Ireland(都柏林大学洞察数据分析中心)

Niamh Belton, Ivan Welaratne, Adil Dahlan, Ronan T Hearne, Misgina Tsighe Hagos, Aonghus Lawlor, Kathleen M. Curran

英文摘要:

This work employs a pre-trained, multi-view Convolutional Neural Network (CNN) with a spatial attention block to optimise knee injury detection. An open-source Magnetic Resonance Imaging (MRI) data set with image-level labels was leveraged for this analysis. As MRI data is acquired from three planes, we compare our technique using data from a single-plane and multiple planes (multi-plane). For multi-plane, we investigate various methods of fusing the planes in the network. This analysis resulted in the novel 'MPFuseNet' network and state-of-the-art Area Under the Curve (AUC) scores for detecting Anterior Cruciate Ligament (ACL) tears and Abnormal MRIs, achieving AUC scores of 0.977 and 0.957 respectively. We then developed an objective metric, Penalised Localisation Accuracy (PLA), to validate the model's localisation ability. This metric compares binary masks generated from Grad-Cam output and the radiologist's annotations on a sample of MRIs. We also extracted explainability features in a model-agnostic approach that were then verified as clinically relevant by the radiologist.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑