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Extract transform in right-anterior-superior coordinate system

Source: R/registration.R
extract_coregistration.Rd

Extract transform from 'ANTs' and moving image, save the transform matrices.

Usage

extract_coregistration(transform_path, moving_img, outprefix = NULL)

Arguments

transform_path

path to the transform ('ANTs_0GenericAffine.mat' matrix) file

moving_img

path to the moving image, for example, if 'CT' is aligned to 'T1w', then 'CT' is the moving image

outprefix

output prefix, where the matrices are saved to; default is at the same folder as transform_path

Value

A list of two matrices: new_sform is the new index to image transform (see 'sform' in 'NIfTI' header definition). This is a four-by-four matrix transforming from the voxel index (moving image) to the fixed image 'RAS' coordinates. ras_transform is a four-by-four matrix from the moving image to the fixed image in 'RAS' coordinates.