MAS & SAS

Multi Atlas Segmentation of 3D Brain MRI Based on Unsupervised Learning

SAS(Single Atlas Segmentation)

Change the direction between volume data and atlas data while training:

 train([atlas,volume],[volume,flow])

Use different metrics. Use dice score to evaluate model.

How does segmentation work

MAS(Multi Atlas Segmentation)

Label fusion

Models: MAS-2 MAS-3 MAS-4 MAS-5 (vm-1, vm-2 double)

Spatial transform: linear/nearest

Use dice score to evaluate model.

Citation

Based on Voxelmorph and Unsupervised learning for registration

Unsupervised Learning for Fast Probabilistic Diffeomorphic Registration
Adrian V. Dalca, Guha Balakrishnan, John Guttag, Mert R. Sabuncu
MICCAI 2018. eprint arXiv:1805.04605

An Unsupervised Learning Model for Deformable Medical Image Registration
Guha Balakrishnan, Amy Zhao, Mert R. Sabuncu, John Guttag, Adrian V. Dalca
CVPR 2018. eprint arXiv:1802.02604