What warning is that? Do you need to try -180?
The scan should actually say its P>>A after you do this rotation.
If you acquire phase up and phase down, why do you need the gradient field
map (or are you just wanting to compare)? The main things to match are
the resolution, field of view, matrix, and position (copy slices on the
scanner).
Peace,
Matt.
On 8/14/14, 6:20 PM, "Kevin Japardi" <[log in to unmask]> wrote:
>Hello Matt,
>
>Thanks for the note. For some reason, I get a warning from the scanner,
>so I've set up my protocol in such a way that I'll be flipping 180
>degrees prior to starting the scan. It won't let me save the scan
>parameter for some reason.
>
>====
>
>Apart from that, is there anything else I need to do to my DTI B0 P>>A
>scan? Or is this simpler than I am making it?
>
>====
>
>Finally, for a gradient field map, are there any parameters I need to
>match/calibrate to my DTI scan?
>
>Sorry for all the questions. Quite new to DTI, and want to make sure
>things are ok before progressing further into our study. (Current: 1 sub,
>so it's not too far in yet.)
>
>Best,
>Kevin Japardi
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