In the PRL-positive group, there was a nonsignificant trend towards a longer disease duration as well as a higher number of total relapses. 3.2 T1w lesion volume and QSM The lesion volume, measured as T1w 'black holes', showed a significant difference between the PRL-positive and PRL-negative group.
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Quantitative susceptibility mapping of paramagnetic rim lesions in early multiple sclerosis: A cross-sectional study of brain age and disability.
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