Single-Input Multi-Output U-Net for Automated 2D Foetal Brain Segmentation of MR Images

Andrik Rampun, Deborah Jarvis, Paul Griffiths, Reyer Zwiggelaar, Bryan W. Scotney, Paul Armitage

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4 Citations (SciVal)
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In this work, we develop the Single-Input Multi-Output U-Net (SIMOU-Net), a hybrid network for foetal brain segmentation inspired by the original U-Net fused with the holistically nested edge detection (HED) network. The SIMOU-Net is similar to the original U-Net but it has a deeper architecture and takes account of the features extracted from each side output. It acts similar to an ensemble neural network, however, instead of averaging the outputs from several independently trained models, which is computationally expensive, our approach combines outputs from a single network to reduce the variance of predications and generalization errors. Experimental results using 200 normal foetal brains consisting of over 11,500 2D images produced Dice and Jaccard coefficients of 94.2 ± 5.9% and 88.7 ± 6.9%, respectively. We further tested the proposed network on 54 abnormal cases (over 3500 images) and achieved Dice and Jaccard coefficients of 91.2 ± 6.8% and 85.7 ± 6.6%, respectively.
Original languageEnglish
Article number200
Number of pages18
JournalJournal of Imaging
Issue number10
Publication statusPublished - 01 Oct 2021


  • Convolutional neural network
  • Deep learning
  • Foetal brain segmentation
  • HED network
  • MRI
  • U-Net


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