is it possible to let orthanc automatically combine all dicom frames of a series into a single file and save that instead of the single files? The reason why this would be cool is that we have many fMRT series with >10k single frames, which leads to unpleasant file system performance (in total there are ~40 million files, amount increasing)
If someone has an idea what could be done, please let me know
Orthanc is not able to do that directly. One instance = one file.
But, you can probably convert your dicom series into a multi frame DICOM.
You could possibly do that with a python plugin triggered by the StableSeries event. You would then use pydicom to merge all single files into a multiframe DICOM, upload it to Orthanc and delete the then obsolete singel frame instances.