Dear Chris,

We have recently updated our scripts to run the dcm2niix v20241211 version, and it does not seem to be working for our DTI scans anymore (Philips scanner, enhanced DICOMs). The output NIFTI is very dark and does not look as expected.

We were previously converting using v1.0.20170624, which worked great for the DTI scans (enhanced DICOM), but would like to be able to move to the latest converter to avoid any other issues cropping up (I am not an expert here so unsure if using a legacy version could cause other unforseen issues).

I have attached the output log from running dcm2niix v20241211 where you can see the warning messages about the DTI and the fieldmaps.

There are also warning messages for our SWI sequences so again, I'm not sure if these are problematic. Visually the NIFTIs look fine for SWIs...

On the upside, the v2024 seems to be converting our functional MRI sequences (where it seemed a bit problematic on the older version).

If you have any advice on what we could try or if we're missing something obvious, that would be much appreciated.

Thank you!

Best wishes

Cheryl