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Question

Question Posted 08/07/20:
Why are structural MRI much more common than fMRI?
I noticed that several encounters have MRI but not fMRI available.

Response posted 08/07/20 by Jeff Gunter:

ADNI-1 did not have fMRI at all; ADNI-2 had fMRI only on Philips scanners; all ADNI-3 subjects should have some form of fMRI series.