Guides, project breakdowns, and lessons learned from building medical imaging platforms — written by the PYCAD team.
Hang a broken nnU-Net vessel mask and get a mesh-guided reconnection for centerlines and graphs. ccDice jumps aorta 0.596→0.992, TopCoW 0.722→0.835, PARSE 0.028→0.862 while Dice stays flat. arXiv:2609.29779.
Hang a multi-frame DSA sequence and get a sequence-level vessel overlay after ConPro contrast-projection pretraining. ConPro+UniMatch reaches 75.4 Dice on DIAS and 81.3 on DSCA; UniMatch gains 0.5-2.0 Dice from ConPro weights. arXiv:2609.30043.
Hang a bone radiograph and a YOLO lesion crop and get a dual-stream mask overlay plus osteosarcoma / osteochondroma / other-benign subtype. OsteoHiFuse-Net on BTXRD (n=3746): overall Dice 0.896, macro F1 0.928, osteosarcoma AUC 0.999. arXiv:2609.28732.
Hang a fixed/moving cardiac MRI or echo pair and get a gated iterative warp that tightens chamber overlays and registration-based EF. Error-gated RUGI wraps pretrained VoxelMorph/TransMorph/CycleMorph with median MSE cuts of 27-37%. arXiv:2609.28081.
nnFoundation ships complementary CNN and ViT 3D radiology foundation weights pretrained on 2.1M CT/MRI/PET volumes, scored on 108 tasks, and released into nnU-Net and nnDetection. arXiv:2609.26924.
Hang LGE cardiac MRI and get separate LA/RA wall and cavity overlays, with a clear warning that walls break under site shift more than cavities. TASSNet, arXiv:2609.22398.
We build custom medical imaging platforms — advanced DICOM viewers, AI segmentation, and the clinical systems around them.
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