Dear afni experts,
I'm doing slice timing correction for data from GE MR750 machine.
Up to now, i get the interleaved scan order from engineer, and find some interesting tags from DICOM header:
First scan Direction: Superior
First scan Location:75.135
Last scan Direction: Inferior
Last scan Location: -91.658
And I've checked that these two slice are the highest and lowest slice for 1 TR.
For the tpattern option from 3dTshift:
S L I C E N U M B E R
tpattern 0 1 2 3 4 Comment
--------- --- --- --- --- --- -------------------------------
altplus 0 600 200 800 400 Alternating in the +z direction
alt+z2 400 0 600 200 800 Alternating, but starting at #1
altminus 400 800 200 600 0 Alternating in the -z direction
alt-z2 800 200 600 0 400 Alternating, starting at #nz-2
seqplus 0 200 400 600 800 Sequential in the +z direction
seqminus 800 600 400 200 0 Sequential in the -z direction
I think i should choose between alt+z and alt-z, but I am quite confused with which one to choose with the information above, what's the relationship between +z/-z and the information above? I can't figure out where's the corresponding Slice Number in my DICOM header, would you mind giving me some advice?
Best wishes,
Peng
Edited 1 time(s). Last edit at 01/23/2019 10:52PM by Peng Ren.