$.niftiImage            Access to metadata elements
dim.internalImage       Internal images
ndim                    Number of dimensions
niftiHeader             Dump or construct a raw NIfTI or ANALYZE header
niftiVersion            Check the format version of a file
pixdim                  Pixel dimensions and units
readNifti               Read a NIfTI-1 format file
retrieveNifti           Obtain an internal NIfTI representation of an
                        object
updateNifti             Update an internal NIfTI-1 object using a
                        template
voxelToWorld            Transform points between voxel and "world"
                        coordinates
writeNifti              Write a NIfTI-1 format file
xform                   Obtain or replace the "xform" transforms for an
                        image
