Connectome 2.0 Diffusion MRI (ex vivo)

This repository contains in vivo diffusion MRI data acquired on the Connectome 2.0 scanner (Siemens MAGNETOM Connectom.X, Erlangen, Germany) at the Athinoula A. Martinos Center for Biomedical Imaging. The Connectome 2.0 system features ultra high gradient strength (up to 500 mT/m) and advanced slew rates (600 mT/m/s) for high fidelity microstructural imaging.

All diffusion data were acquired using 3D multi-shot EPI sequence with following parameters:
* Gmax = 450 mT/m, Smax = 400 T/m/s
* Pulse width (d) = 17 ms
* Diffusion times (D) = 22 ms
* b values = 4000, 7400, 11800, 17300, 23700, 31300, 39800, 49400, 60000 s/mm2
* Number of directions: 32 for b < 10000 s/mm2; 64 for b > 10000 s/mm2
* TR / TE = 500 / 64 ms
* Voxel size: 0.8 mm isotropic
* 4 shots

The dataset includes:
* Raw diffusion weighted images (DWIs) and corresponding b=0 images
* Metadata (b values and b vectors)
* GRE field map with the same FOV as DWIs