ADNI data download for CN, MCI, EMCI, LMCI, AD

[Jannatul Ferdush]

I want to download MRI, PET, and DTI data for the same subjects. I have found approximately 471 subjects who have all three imaging modalities, but only 48 of them are AD patients. I’m really frustrated — am I correct? That’s very little data :( Also, downloading the MRI images takes a lot of time.