MRI Unbound

This site is meant to provide the code from the old mri_unbound website: http://www.ismrm.org/mri_unbound/

The projects listed below are directly reposted from the site and can be a starting point for future development.

Spiral Gen (Spiral Waveform Generation)

• Author: Jim Pipe
• License: None
• Archive: spiralgen_jgp_12oct.zip

A support routine that numerically generates a single (variable density) spiral waveform, which may be rotated by the user for multi-shot spiral methods.

SDC 3D (Sampling Density Calculation)

• Author: Nick Zwart
• License: None
• Archive: sdc3_nrz_11aug.zip

Calculates the 3D sampling density weights for an arbitrary set of sampling points.

Grid 3D (Gridding)

• Authors: Nick Zwart, Dallas Turley
• License: None
• Archive: grid3_dct_11aug.zip

Performs 3D gridding with an arbitrary coordinate set, data, and sampling density weights. The code is threaded, but can be altered slightly to run non-threaded if desired.

Through Time Radial Grappa (Parallel Imaging)

• Author: Nicole E. Seiberlich
• License: Creative Commons
• Archive: throughtimeRadialGrappa_nes_13oct.zip

Reconstructs undersampled radial data using through-time radial GRAPPA.