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Identification of Multiple Sclerosis lesion subtypes and their quantitative assessments with EDSS using neuroimaging

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Abstract

It would be helpful to have an automatic segmentation method to provide an acceptable performance of Magnetic Resonance Imaging (MRI) on Multiple Sclerosis (MS) subtypes that have important roles in cure procedure. This article presents a technique to classify MS lesion subtypes in MR images and then evaluates the correlation between lesion subtypes and Expanded Disability Status Scale (EDSS). The technique used textural features based on the Gray Level Co-occurrence Matrix (GLCM) and histogram information (mean and variance) to describe each lesion and normal tissue of FLAIR Images. Then it discriminated them with Support Vector Machine (SVM). A comprehensive post-processing module improved the quality of segmentation. We found corresponding areas in T2-weighted (T2-w), T1-weighted (T1-w) called black holes, and T1-weighted enhancing (T1-enhancing) by mapping the extracted lesions of FLAIR slices on them. Multi-Layer Perceptron (MLP) classified the mapped lesions in three classes of T2, black holes and T1-enhancing. Finally, the correlation between lesions volume of each class and EDSS was calculated. The performance evaluation resulted that the presented method allowed a higher value of sensitivity (86.1%) in black holes MS lesion subtypes classification. This sensitivity was higher than that obtained by others. This improvement beside the high accuracy (85.02%) and specificity (85.4%) make this pipeline an interest for clinical applications as an extra helpful way near neurologist for diagnosis. There were meaningful correlations between T2-w lesions volume and EDSS (R = 0.71, p = 0.03) and between black holes lesions and EDSS (R = 0.82, p = 0.004).

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Acknowledgements

The authors would like to express their special thanks to the university of Camerino for this collaboration.

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Correspondence to Rasoul Mahdavifar (Khayati).

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Research involving human participants

All procedure performed in this study involving human participants were by the ethical standards of the institutional and national research committee and declaration and its later amendments or comparable ethical standards, and informed consent was obtained from all individual participants included in this study.

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Karami, V., Mahdavifar (Khayati), R., Habibzadeh, A. et al. Identification of Multiple Sclerosis lesion subtypes and their quantitative assessments with EDSS using neuroimaging. Netw Model Anal Health Inform Bioinforma 9, 38 (2020). https://doi.org/10.1007/s13721-020-00245-8

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  • DOI: https://doi.org/10.1007/s13721-020-00245-8

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