Tcktransform

7

Hi，
I was dealing with the similar problem: to transform the *.tck in native DWI space to MNI space using the FSL generated warps image between DWI and MNI, the results seems good:

image
image2536×930 181 KB

background is the MNI_3mm_brain.nii, and the red color is the transformed tck.nii.

here are the commands I used:

#generate the MNI2DWI transformation warp by mrtrix (combined with the fsl warps: warps_MNI2dwi.nii.gz)
warpinit MNI152_T1_3mm_brain.nii.gz inv_identity_warp_no.nii
applywarp --ref=b0_brain.nii.gz --in=inv_identity_warp_no.nii --warp=warps_MNI2dwi.nii.gz --out=mrtrix_warp_MNI2dwi.nii.gz
#check the warping results by applying it to MNI_3mm_brain
mrtransform MNI152_T1_3mm_brain.nii.gz -warp mrtrix_warp_MNI2dwi.nii.gz MNI2dwi.nii.gz
#tcktransform
tcktransform ACT_WM.tck mrtrix_warp_MNI2dwi.nii.gz tck2MNI.tck -force
tckmap tck2MNI.tck tck2MNI.nii -template MNI152_T1_3mm_brain.nii.gz -force