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KomaMRIFiles: RF phase read with the opposite sign from Pulseq #315

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merged 3 commits into from
Mar 6, 2024

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beorostica
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@beorostica beorostica commented Mar 6, 2024

This pull request resolves a portion of discussion #311. Thanks to the community, we discovered that we were not properly plotting or reading Pulseq files due to a bug involving a minus sign and transposition.

@beorostica beorostica requested a review from cncastillo as a code owner March 6, 2024 21:52
@cncastillo cncastillo merged commit 18979c1 into master Mar 6, 2024
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@cncastillo cncastillo changed the title Patch RF phase KomaMRIFiles: RF phase read with the opposite sign from Pulseq Mar 11, 2024
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From discussion #311:

"Hi! We realized that the phase compensation was correct!! We added a test to verify it.

The problem was the RF phase, which was read with a minus sign from the Pulseq (KomaMRIFiles), and then plotted with another minus sign🤦(KomaMRIPlots), so it looked fine.

The fix is in #315

There was a sneaky A' instead of a transpose(A) when plotting that conjugated the RF complex amplitude and therefore the -phase. We will upload a patch ASAP."

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