The type of imaging methods you use will limit the types of questions you can ask. Which of the following is most correct?
To measure fine detail shape and structural properties of gray matter, DTI and CT would be best. To measure fine detail shape and structural properties of white matter, sMRI and CT would be best.
To measure neurotransmitters in the brain you would use PET or H-MRS, to measure electrical activity in the brain you would use EEG or MEG, to measure blood flow you would use fMRI or PET.
Like cameras for photography and videography, the temporal and spatial resolutions can be very important in human brain imaging. Which if the following is true regarding temporal and spatial resolution for brain imaging methods?
MEG & especially EEG have better spatial resolution (collect better location information) compared to fMRI and PET, and human brain imaging has generally good spatial resolution compared to non-human methods.
MEG & especially EEG have better temporal resolution (collect at a higher rate in time) compared to fMRI and PET, and that first set of methods can be on par with non-human methods in terms of quality of temporal resolution.