Dissector
Dissector is an open-source Python library for evaluating medical image segmentations, with a focus on MRI-derived muscle segmentations.
It provides metrics for comparing a predicted segmentation against a ground-truth mask, including standard measures (Dice, Jaccard, Hausdorff, FP, FN) and additional metrics (boundary IoU, binary cross-entropy, inter-slice Dice) that do not require heavy dependencies such as PyTorch or a GPU.
The long-term goal of the project is to benchmark existing segmentation methods — including MuscleMap whole-body segmentation and MedSAM-based refinement pipelines — against a forthcoming state-of-the-art method that exploits multi-sequence MRI noise structure.
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