Super-resolution reconstruction with unbalanced SSFP
This repository contains a simple multifrequency reconstruction algorithm, as outlined in the paper: Lally PJ, Matthews PM, Bangerter NK. Unbalanced SSFP for super-resolution in MRI. Magn Reson Med. 2020;00:1–13. https://doi.org/10.1002/mrm.28593
- '/src': source code (written for MATLAB 2017a)
- '/src/external': external source code, see Acknowledgements
- '/data': example 2D dataset from a Lego brick on a 9.4T Bruker Biospec 94/20 (MATLAB .mat file)
- '/doc': additional documentation
The sequence parameters were as follows: TR/TE=5/2.5ms; NPE x NFE = 32x128; FOV = 58x40mm2; slice thickness = 1.2mm; α=0.4°; 1000 dummy TRs (5s of steady-state preparation); 36 separate images at equidistant phase increments (i.e. 0°,10°,20°,...,350°), with the unbalanced gradient along the PE direction. The complex data array contained in the .mat file therefore has dimensions 32x128x36
The ifft2c and fft2c functions were written by Michael Lustig for ESPIRiT, downloaded from http://people.eecs.berkeley.edu/~mlustig/Software.html on 10/02/2020. All use and distribution rights are as described in the original code.