Medical
Optical imaging describes various techniques using visible, ultraviolet, and infrared light used in imaging. Because light is an electromagnetic wave, similar phenomena occur in X-rays, microwaves, radio waves.
Chemical imaging or
molecular imaging involves inference from the deflection of
light emitted from (e.g.
laser,
infrared) source to
structure, ,
anatomic and chemical properties of material (e.g.
crystal,
cell tissue). Optical imaging systems may be divided into diffusive and ballistic imaging systems.