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Table 2 Comparison of optical imaging to conventional functional imaging techniques

From: Optical neuroimaging: advancing transcranial magnetic stimulation treatments of psychiatric disorders

Techniques Spatial resolution Temporal resolution Size/portability Average cost (estimated per United States dollar)
fNIRS Centimeter Milliseconds Small; portable Thousands to tens of thousands
DOT Millimeter Milliseconds Small; portable Thousands to tens of thousands
fMRI Millimeter Seconds Large; not portable Millions
EEG Centimeter Milliseconds Small; portable Thousands to tens of thousands
MEG Centimeter Milliseconds Large; not portable Millions
PET Millimeter Minutes Large; not portable Millions
SPECT Centimeter Minutes Large; not portable Hundreds of thousands