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MRsources / MRzero-Core

GNU Affero General Public License v3.0
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Wrong sign in B1 phase for pTx calculation #57

Closed SWeinmueller closed 4 months ago

SWeinmueller commented 4 months ago

To match scanner (7T Terra.X) with simulation, the shim has to be calculated with a negative sign for the B1 phase: shim = shim_array[:, 0] torch.exp(-1j shim_array[:, 1]) instead of shim = shim_array[:, 0] torch.exp(1j shim_array[:, 1])

https://github.com/MRsources/MRzero-Core/blob/3d135bd5dbdb70dd8bcbb73615dfb3b48988ea2e/python/MRzeroCore/simulation/main_pass.py#L88C1-L88C71

SWeinmueller commented 4 months ago

Pull request: https://github.com/MRsources/MRzero-Core/pull/58

SWeinmueller commented 4 months ago

Exemplary CP mode with minus: grafik

and without minus: grafik