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Name
Non-linear normalization of MRI brain scans
Byline
Description
To implement a state-of-the art algorithm for accurate registration of MRI brain scans. The package was designed to be portable across Unix platforms and to run on low-cost PC workstations. The algorithm computes a 3D displacement field for warping an MRI image volume to a template image volume. It hierarchically divides the template into blocks of voxels that are locally shifted in order to maximize one of several voxel similarity measures (subject to a constraint enforcing the spatial smoothness of the displacement field). The software package was designed to complement the AIR registration algorithm and includes routines for volume resampling and for combining a computed warp displacement field with an initial 12-parameter affine transformation (.air file); a visualization tool (running under Matlab 5) is also included. The package can also to be used to align PET and fMRI volumes that are accompanied by structural MRI volumes.
NIfTI-1 support
Creator
Ulrik Kjems
Contact
uk@imm.dtu.dk or Ulrik Kjems, Department of Mathematical Modelling, DK-2800 Lyngby, Denmark
WWW
http://hendrix.imm.dtu.dk/software/warp
Availability
Programs, documentation and examples are available for download.
How to get
ftp site.
Current version
Current version release date
Open source
Not recorded
License
Available free of charge
Yes
Requirements
The software requires Matlab 5.
Technical publications
Applications publications
Other information
None.
Keywords
registration, warping
Platforms
MATLAB, UNIX, Windows
IATR listing last updated
02 Apr 2002