= Distortion correction using interlaced q-space sampling =

This page provides a precompiled Matlab implementation ("p-code:) of a distortion correction method for diffusion MRI using the interlaced q-space sampling technique. This method uses interlaced phase-encoding directions (IPED) while sampling the q-space, which enables accurate distortion correction without increasing the acquisition time. Please see following references for more details of the method:

 1. C. Bhushan, A. A. Joshi, R. M. Leahy and J. P. Haldar (2014), '''Improved B0-distortion correction in diffusion MRI using interlaced q-space sampling and constrained reconstruction'''. Magnetic Resonance in Medicine, 72: 1218-1232. doi: [[http://dx.doi.org/10.1002/mrm.25026|10.1002/mrm.25026]]

 1. C. Bhushan, A. A. Joshi, R. M. Leahy and J. P. Haldar (2013), '''Accelerating data acquisition for reversed-gradient distortion correction in diffusion MRI: A constrained reconstruction approach'''. 21st Scientific Meeting of International Society for Magnetic Resonance in Medicine (ISMRM), Salt Lake City, p. 55. [[http://neuroimage.usc.edu/~chitresh/papers/ismrm_2013_EPI_distortion_correction.pdf|Abstract PDF]], [[http://cds.ismrm.org/protected/13MPresentations/0055/|ISMRM presentation video]]

== Usage ==

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[[attachment:BST-view.png| BrainSuite view]]

[[attachment:IPED_ped_eg.png|{{attachment:IPED_ped_eg_small.png}}]]