Hello,
I have collected data with an EPI sequence [Siemens MAGNETOM Trio (TIM
System)] with following unwarping-relevant parameters:
- echo spacing = .53ms
- number of in plane lines in the reconstructed epi image = 64
- acceleration factor = 2
- number of in plane reference lines = 24
[of course i also have the b0 field phase and magnitude images]
I wonder if I have to calcualte the total echo time for unwarping
simply by deviding the echo spacing of the EPI sequence by the acceleration
factor and then multiplying it with the number of lines per slice, or if I also need
to take into account that the scanner also acquires reference lines.
I would apreciate any hint or comment!
Thanks, Guido
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