Dear colleagues,
I am analyzing fMR images acquired with an interleaved sequence of 34 slices.
The slices (indices corresponing to order along z-axis) were acquired in the following time order:
[18 1 19 2 20 3 21 4 22 5 23 6 24 7 25 8 26 9 27 10 28 11 29 12 30 13 31 14 32 15 33 16 34 17]
Slice 18 was acquired at TR/2.
I performed slice time correction using slice 18 as reference slice (inputs for slice order and reference slice in ms), followed by realignment, normalization, (optional filtering - wavelet toolbox), and smoothing.
As I want to perform first level analysis, I am uncertain about the slice number to be entered as microtime onset, more specifically whether it should be 1 or 18 to match TR/2?
Thank you!
Kind regards,
Peter
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