Dwipreproc rpe_all

Dear all

I’ve this problem running dwipreproc

“”"
$ dwipreproc auto-dti_APPA.mif auto-dti_preproc.mif -rpe_all -pe_dir PA -eddy_options “–slm=linear "
$ dwipreproc : [ERROR] Unable to determine matching reversed phase-encode direction volume for DWI volume 2
“””
for note

  • I’ve 2 DWI volumes AP and PA and I try to use dwipreproc

  • $ mrinfo auto-dti_AP.mif


Image: “auto-dti_AP.mif”


Dimensions: 128 x 128 x 24 x 33
Voxel size: 1.75 x 1.75 x 2 x ?
Data strides: [ -1 -2 3 4 ]
Format: MRtrix
Data type: unsigned 16 bit integer (little endian)
Intensity scaling: offset = 0, multiplier = 1.78095
Transform: 0.9983 -0.05261 -0.02375 -106.3
0.05303 0.9984 0.01736 -97.71
0.0228 -0.01859 0.9996 -27.04
EchoTime: 0.093387
FlipAngle: 90
RepetitionTime: 2.8905
command_history: mrconvert “.” “auto-dti_AP.mif” (version=3.0_RC3-214-g1b818fca)
comments: STATE COSMIN DANIEL (10900165) [MR] DTI_32_AP
study: FOSSE POST [ ORIGINAL PRIMARY M_SE M SE ]
DOB: 02/08/1996
DOS: 16/10/2019 09:45:35
dw_scheme: 0,0,0,0
[33 entries] -0.023748479783535004,0.017358968034386635,0.99956727027893066,1000

-0.49237087368965149,-0.40296009182929993,0.77148574590682983,1000
-0.98746919631958008,-0.019199294969439507,0.15663017332553864,1000
mrtrix_version: 3.0_RC3-214-g1b818fca
“”"

please help

thanks +++

Tim
see appended