Optical Coherence Tomography (OCT) is a new technology for performing high-resolution
cross sectional imaging. OCT is analogous to ultrasound imaging, except that it uses light
instead of sound. OCT can provide cross sectional images of tissue structure on the micron
scale in situ and in real time. OCT functions as a type of optical biopsy and is a powerful
imaging technology for medical diagnostics because unlike conventional histopathology
which requires removal of a tissue specimen and processing for microscopic examination,
OCT can provide images of tissue in situ and in real time. OCT can be used where
standard excisional biopsy is hazardous or impossible, to reduce sampling errors associated
with excisional biopsy, and to guide interventional procedures.