Question Posted 01/19/18:
I noticed that there are two type of fMRI images,fMRI and extended fMRI, i just get confused with that, could you please help me with what's the difference? thank you for your precious time.
Response posted 03/21/18 by ADNI MRI Core:
Thank you for your question to the ADNI MRI Core

When ADNI first started the time of the fMRI was 7 minutes. Research began to show that a time of 10 minutes was needed for an effective fMRI study, so the the extended fMRI was a change from 7 to 10 mins.