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Semi-supervised Segmentation of Cardiac MRI using Image Registration

Authors: 

Carles Garcia-Cabrera, Kathleen M Curran, Noel O'Connor, Kevin McGuinness

Publication Type: 
Refereed Conference Meeting Proceeding
Abstract: 
In this work, we propose a novel method for enhancing the segmentation of Cardiac MRI through synthetically labelling unlabelled volumes and sequences within the dataset. In particular, the synthetic labels are obtained through registration using a Voxelmorph network trained over the labelled subset. Unlike other works that use 3D networks the segmentation is performed using a 2D U-net, resulting in a weakly supervised segmentation approach that benefits from the features in unlabelled volumes along with the annotated data. Experimental results for over 345 patients scanned using four different scanners show that the addition of the synthetically obtained labels to the original dataset enhance the performance up to 2.6% and improves the capability of the network to generalise to scanners from different vendors.
Conference Name: 
MIDL 2021
Proceedings: 
https://2021.midl.io/
Digital Object Identifer (DOI): 
10.xx
Publication Date: 
22/02/2021
Conference Location: 
Germany
Institution: 
Dublin City University (DCU)
Open access repository: 
Yes