Hi,
It is difficult to answer your question without a bit more context:
- What version of clinica are you using ?
- Did you download the dataset from the ADNI website recently ?
- Did you follow the documentation of clinica when downloading the images from the ADNI website ? (there are a few checkboxes to tick here and there)
- Could you provide the logs you got when running the conversion ?
- Do you have an example of a subject / session for which you'd expect to have PET data but you don't have them converted ?
Best,
Nicolas