Optical coherence tomography (OCT) is a new imaging
modality, used for the first time by Huang et al. in 1991
in vitro on the human peripapillary region of the retina and
coronary arteries [1]. OCT is based on near infrared light;
an optical beam is directed at the tissues, most of the light
scatters and only the small portion of this light that reflects
from subsurface features is collected and forms the image
by yielding spatial information about tissue microstructure.
The critical advantage of OCT over ultrasonography
and magnetic resonance imaging is due to its micrometer
resolution (about 10—15 m of tissue axial resolution)
[2].