MSLesSeg: baseline and benchmarking of a new Multiple Sclerosis Lesion Segmentation dataset

MSLesSeg is a publicly accessible MRI dataset aimed at advancing research in Multiple Sclerosis (MS) lesion segmentation. It includes 115 MRI scans from 75 patients, featuring T1, T2, and FLAIR sequences. The dataset is enriched with supplementary clinical data gathered from multiple sources. Expert-validated annotations provide high-quality lesion segmentation labels, offering a reliable, human-labeled benchmark for evaluating segmentation algorithms.