We propose a 4D convolutional neural network (CNN) for the segmentation of retrospective ECG-gated cardiac CT, a series of single-channel volumetric data over time. While only a small subset of volumes in the temporal sequence is annotated, we define a sparse loss function on available labels to allow the network to leverage unlabeled images during training and generate a fully segmented sequence. We investigate the accuracy of the proposed 4D network to predict temporally consistent segmentations and compare with traditional 3D segmentation approaches. We demonstrate the feasibility of the 4D CNN and establish its performance on cardiac 4D CCTA (video: https://drive.google.com/uc?id=1n-GJX5nviVs8R7tque2zy2uHFcN_Ogn1.).
CITATION STYLE
Myronenko, A., Yang, D., Buch, V., Xu, D., Ihsani, A., Doyle, S., … Roth, H. (2020). 4D CNN for Semantic Segmentation of Cardiac Volumetric Sequences. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 12009 LNCS, pp. 72–80). Springer. https://doi.org/10.1007/978-3-030-39074-7_8
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