No I am using different data than Andras. I am using data exported from a Bruker scanner (7T biospec). I am getting the same error on all the Bruker data I have tried (Diffusion and non-diffusion data).
Though I wonder if this is the wrong approach for what I am trying to do. I am hoping to automatically convert all DICOM files to Nrrd as data is acquired. What I have been doing is using the DICOM module to import data into slicer and then just saving as nrrd within the GUI. I thought the DWIConvert command line interface might be able to help me automate this.
I haven’t used DWIConvert with Bruker data, diffusion or otherwise, and the error message is not very helpful, unfortunately. But I do know there is currently no support for Bruker diffusion specifically in DWIConvert (this is a small animal magnet, correct?). If the non-diffusion volumes are “relatively sane” it probably could/should work but may require a bug report with sample data.
If the Slicer DICOM module interface works well, most steps should be accessible via a script in Python, as an alternative automation approach.
I suppose calling this solved is not entirely accurate. I solved my issue of converting DICOM files to NRRD, though I ended up doing this without using the DWIConvert module. Instead I wrote a python script using Slicer’s python interpreter instead. The script basically uses the DICOM browser module to import dicom files, and then the Save module to convert them to NRRD. I was able to suppress all the graphical windows so the script can be run without actually opening the Slicer GUI.