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Ensemble CNN and Uncertainty Modeling to Improve Automatic Identification/Segmentation of Multiple Sclerosis Lesions in Magnetic Resonance Imaging

arXiv 2108.11791 ↗First posted 26 Aug 2021eess.IV cs.AI cs.CVcited by 0

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Abstract (arXiv)

To date, several automated strategies for identification/segmentation of Multiple Sclerosis (MS) lesions with the use of Magnetic Resonance Imaging (MRI) have been presented, but they are outperformed by human experts, from whom they act very differently. This is mainly due to: the ambiguity originated by MRI instabilities; peculiar variability of MS; non specificity of MRI regarding MS. Physicians partially manage the uncertainty generated by ambiguity relying on radiological/clinical/anatomical background and experience. To emulate human diagnosis, we present an automated framework for identification/segmentation of MS lesions from MRI based on three pivotal concepts: 1. the modelling of uncertainty; 2. the proposal of two, separately trained, CNN, one optimized for lesions and the other for lesions with respect to the environment surrounding them, respectively repeated for axial, coronal and sagittal directions; 3. the definition of an ensemble classifier to merge the information collected by different CNN. The proposed framework is trained, validated and tested on the 2016 MSSEG benchmark public data set from a single imaging modality, the FLuid-Attenuated Inversion Recovery (FLAIR). The comparison with the ground-truth and with each of 7 human raters, proves that there is no significant difference between the automated and the human raters.

Key facts. No citing papers in the map yet (data through 14 Oct 2026). Builds on 18 of its 61 references that are in the map. First posted on arXiv 26 Aug 2021.

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References · 18

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  7. 2018Asymmetric Loss Functions and Deep Densely Connected Networks for Highly Imbalanced Medical Image Segmentation: Application to Multiple Sclerosis Lesion Detectioncited by 22
  8. 2018One-shot domain adaptation in multiple sclerosis lesion segmentation using convolutional neural networkscited by 20
  9. 2017Improving automated multiple sclerosis lesion segmentation with a cascaded 3D convolutional neural network approachcited by 19
  10. 2018Multi-branch Convolutional Neural Network for Multiple Sclerosis Lesion Segmentationcited by 16
  11. 2020Handling of uncertainty in medical data using machine learning and probability theory techniques: A review of 30 years (1991-2020)cited by 12
  12. 2019Soft labeling by Distilling Anatomical knowledge for Improved MS Lesion Segmentationcited by 11
6 more
  1. 2019Deep Neural Network Hyperparameter Optimization with Orthogonal Array Tuningcited by 11
  2. 2020Geometric Loss for Deep Multiple Sclerosis lesion Segmentationcited by 8
  3. 2021Impact of individual rater style on deep learning uncertainty in medical imaging segmentationcited by 8
  4. 20183D RoI-aware U-Net for Accurate and Efficient Colorectal Tumor Segmentationcited by 6
  5. 2018Shallow vs deep learning architectures for white matter lesion segmentation in the early stages of multiple sclerosiscited by 5
  6. 2020Multiple Sclerosis Lesion Segmentation -- A Survey of Supervised CNN-Based Methodscited by 3

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