In this section
Several of our current PhD candidates and fellow researchers at the Data Science Institute have published, or in the proccess of publishing, papers to present their research.
@inproceedings{Bai:2019,
author = {Bai, W and Chen, C and Tarroni, G and Duan, J and Guitton, F and Petersen, SE and Guo, Y and Matthews, PM and Rueckert, D},
title = {Self-supervised learning for cardiac MR image segmentation by anatomicalposition prediction},
url = {http://arxiv.org/abs/1907.02757v1},
year = {2019}
}
TY - CPAPER
AB - In the recent years, convolutional neural networks have transformed the field of medical image analysis due to their capacity to learn discriminative image features for a variety of classification and regression tasks. However, successfully learning these features requires a large amount of manuallyannotated data, which is expensive to acquire and limited by the availableresources of expert image analysts. Therefore, unsupervised, weakly-supervised and self-supervised feature learning techniques receive a lot of attention, which aim to utilise the vast amount of available data, while at the same time avoid or substantially reduce the effort of manual annotation. In this paper, we propose a novel way for training a cardiac MR image segmentation network, in which features are learnt in a self-supervised manner by predicting anatomical positions. The anatomical positions serve as a supervisory signal and do not require extra manual annotation. We demonstrate that this seemingly simple task provides a strong signal for feature learning and with self-supervised learning, we achieve a high segmentation accuracy that is better than or comparable to a U-net trained from scratch, especially at a small data setting. When only five annotated subjects are available, the proposed method improves the mean Dice metric from 0.811 to 0.852 for short-axis image segmentation, compared to the baseline U-net.
AU - Bai,W
AU - Chen,C
AU - Tarroni,G
AU - Duan,J
AU - Guitton,F
AU - Petersen,SE
AU - Guo,Y
AU - Matthews,PM
AU - Rueckert,D
PY - 2019///
TI - Self-supervised learning for cardiac MR image segmentation by anatomicalposition prediction
UR - http://arxiv.org/abs/1907.02757v1
UR - https://link.springer.com/chapter/10.1007/978-3-030-32245-8_60
UR - http://hdl.handle.net/10044/1/73652
ER -
Data Science Institute
William Penney Laboratory
Imperial College London
South Kensington Campus
London SW7 2AZ
United Kingdom
Email us.
Sign up to our mailing list.
Follow us on Twitter, LinkedIn and Instagram.
