A system for fully automated monitoring of lesion evolution over time in multiple sclerosis

Inflammatory white matter brain lesions are a key pathological finding in patients suffering from multiple sclerosis (MS). Image based quantification of different characteristics of these lesions has become an elemental bio-marker in both diagnosis as well as therapy monitoring during treatment of these patients. Whilst it has been shown that the lesion load at a single point in time is only of limited value with respect to explaining clinical symptoms of the patients, a more robust estimate of disease activity can be observed by analyzing the evolution of lesions over time. Here, we propose a system for automated monitoring of temporal lesion evolution in MS. We describe an approach for analysis of lesion correspondence, along with a pipeline for fully automated computation of this model. The pipeline consists of a U-Net based lesion segmentation, a non-linear image registration between multiple studies, computation of temporal lesion correspondences, and finally an analysis module for extracting and visualizing quantitative parameters from the model.