Re:Objective test for depression? (Score 1)

Can anyone link to an article that shows that an MRI can be used for a clinical diagnosis of either a major depressive episode or major depressive disorder? Example, some structural change in the hippocampus or amgydala? I haven't seen that, but prior posts seem to claim a MRI would be useful for diagnosis. Even if fMRIs show differences between those with clinical depression and no mood disorder, can anyone link to an article showing that an individual fMRI scan is useful as a diagnostic tool?