Papers › MixMicrobleed: Multi-stage detection and segmentation of cerebral microbleeds

MixMicrobleed: Multi-stage detection and segmentation of cerebral microbleeds

5 Aug 2021arXiv:2108.02482archive 2025-07-28

Marta Girones Sanguesa, Denis Kutnar, Bas H. M. van der Velden, Hugo J. Kuijf

Cerebral microbleeds are small, dark, round lesions that can be visualised on T2*-weighted MRI or other sequences sensitive to susceptibility effects. In this work, we propose a multi-stage approach to both microbleed detection and segmentation. First, possible microbleed locations are detected with a Mask R-CNN technique. Second, at each possible microbleed location, a simple U-Net performs the final segmentation. This work used the 72 subjects as training data provided by the "Where is VALDO?" challenge of MICCAI 2021.

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Segmentation

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Concatenated Skip ConnectionConvolutionMask R-CNNMax PoolingRPNReLURoIAlignSoftmaxU-Net

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