Hi,
I'm currently exploring gradient unwarping of data on a Siemens Trio scanner (sonata coils) and a Siemens Verio scanner. I have got lists with coil coefficients for both scanners. According to the FS mail archives, you provide a binary for gradient unwarping, but not any scanner tables (due to licensing), or the conversion scripts mentioned here:https://surfer.nmr.mgh.harvard.edu/fswiki/GradientUnwarping https://surfer.nmr.mgh.harvard.edu/fswiki/GradientUnwarping.
With some googling, I have found this version:https://code.google.com/p/gradunwarp/ https://code.google.com/p/gradunwarp/https://code.google.com/p/gradunwarp/
which seems to be the latest available version of the software (originally written by Czanner). This package also provides the table conversion scripts. The development appears to be stalled, however. I have used this version for (what seems to be) successful gradient unwarping of Siemens Trio data.
A couple of questions:
1) Can you enlighten me as to the latest and 'most proper' version of the software to use for gradient unwarping (bug fixes, scanner support)? Is the binary in FS further developed than the google docs version, and if so, have I somehow missed the table conversion scripts?
2) At DRCMR (see below), we have a Siemens Verio scanner, as well as a list with the associated gradient coil coefficients. As of now, it seems like the correction software (public FS + google doc version) does not support this scanner type. Is this something that could possibly be included? Or is a newer (possibly non-public) version available that supports it already? We're aware that the scanner can perform correction by itself, but as far as I know this is only in 3D, and also requires you to do it immediately after the sequence.
Best Regards, Christian Thode Larsen PhD Student Technical University of Denmark (DTU) / Danish Research Centre for Magnetic Resonance (DRCMR) Supervisor: Koen Van Leemput