In this review, we introduce the basic principle and technology progress of tissue optical imaging from both diffuse optical imaging and coherence domain imaging, which include the continuous-wave imaging, time-resolved optical tomography, diffuse photon density waves tomography, ultrasound-modulated optical tomography, optical coherence tomography and laser speckle imaging. Applications of optical imaging in brain activity and tissue function are also discussed.
Brain ; physiology ; Humans ; Image Processing, Computer-Assisted ; instrumentation ; methods ; Lasers ; Spectrophotometry, Infrared ; instrumentation ; methods ; Tomography, Optical ; instrumentation ; methods ; Ultrasonography