I want to download MRI and PET data for each subject. For only MR data it shows a list of collections but it does not contain any PET scans. Where is the collection having such a dataset having both scans for every subject.
Thank you for your question. Use the Advanced Image Search (beta) function, select MRI and PET under Image>Modality and check the box "AND", so the results will only display subjects with both MRI and PET.