freesurferformats (version 1.0.2)

mghheader.tkreg2scanner: Compute tkreg-RAS to scanner-RAS matrix from basic MGH header fields.

Description

This is also known as the 'tkreg2scanner' matrix. Note that this is a RAS-to-RAS matrix. It is the inverse of the 'scanner2tkreg' matrix, see mghheader.scanner2tkreg.

Usage

mghheader.tkreg2scanner(header)

Value

4x4 numerical matrix, the transformation matrix

Arguments

header

the MGH header

See Also

Other header coordinate space: mghheader.is.ras.valid(), mghheader.ras2vox(), mghheader.ras2vox.tkreg(), mghheader.scanner2tkreg(), mghheader.vox2ras(), mghheader.vox2ras.tkreg(), read.fs.transform(), read.fs.transform.dat(), read.fs.transform.lta(), read.fs.transform.xfm(), sm0to1(), sm1to0()

Examples

brain_image <- system.file("extdata", "brain.mgz",
  package = "freesurferformats",
  mustWork = TRUE
)
vdh <- read.fs.mgh(brain_image, with_header = TRUE)
mghheader.tkreg2scanner(vdh$header)