The following MATLAB implementations and validation on testing datasets can be downloaded here. After registration, a download link will be shown. Since the manuscript is under review, the zip file is password-protected by the Manuscript ID to limit access to reviewers. Anyone interested in a preview can also send a request to medi-users@googlegroups.com.
The code has been tested on 64-bit Windows 7 + MATLAB 2009a.
The testing dataset includes a numerical simulation, an experimental phantom, and a human brain.
For background field removal: