Phantom for testing data.

*HARDI Reconstruction contest
ISBI - San Francisco
April 7th, 2013*

Emmanuel Caruyer,
*Dept of Radiology, University of Pennsylvania.*

- Towards connectivity-based evaluation of local reconstruction
- Crossings, branchings, and co.

- Evaluation of partial volume effect
- Model for signal simulation

Partial volume effect computation.
Reproduced from [TG Close *et al.* Neuroimage (2009)]

- Strategy adapted from the Numerical Fiber Generator
- Subdivision in a grid of 9x9x9 subvoxels
- In each subvoxel, only one compartment is accounted for.

For the Training and Testing data: about 100,000,000 (sub)voxels to compute!

Noisy Diffusion-weighted images for the DSI scheme, SNR=10.

- Based on CHARMED Moedl
- Extra-axonal compartment is Gaussian anisotropic
- Intra-axonal compartment follows Soderman cylinder model.