Optical Coherence Tomography: Basic Concepts and Applications in Neuroscience Research

Table 2

Comparison of spatiotemporal resolution of OCT with other neuroimaging techniques.

Techniques	Spatial resolution	Temporal resolution	References
Magnetic resonance imaging (MRI)	Millimeter, in some cases (ultrahigh field) submillimeter	Can be used to track longitudinal changes	[1]
Functional MRI (fMRI)	Millimeter	Seconds	[1]
Magnetic resonance spectroscopy (MRS)	Centimeter	Minutes	[1]
Positron emission tomography (PET)/single positron emission and computed tomography (SPECT)	Centimeter (SPECT) to millimeter (PET)	Minutes	[1]
Magnetoencephalography (MEG)	Centimeter	Milliseconds	[1]
Electroencephalography (EEG)/event-related potentials (ERP)	Centimeter	Milliseconds	[1]
Near-infrared spectroscopy (NIRS)	Centimeter	Milliseconds	[2]
Optical coherence tomography (OCT)	Micrometer	Milliseconds	[20, 38]