Cross-section of journalism, coherence optics, or OCT, a form, a cross section of journalism, in medicine.

from the eighteenth century AD. the microscope device, imaging such as: x-ray and MRI, etc. essential tools in the medical sector, and biology. But the device cross-section of journalism, problems such as price. being aggressive and low resolution capable. so, in order to eliminate these problems, a lot of researchers device OCT (from the most recent advances in the field of medical imaging) introduced. Imaging technique OCT for the first time by Huang and colleagues in 1991, was introduced. This technology can imaging, cross-sectional, buildings microscopic tissue bio do. Also has resolution on the scale of micrometers. In this method, similar imaging, ultrasound, etc. a number of A-Scan cross-sectional or scanning, linear time, B-Scan or cross-sectional images through the Create. Energy light for imaging with the device OCT instead of the audio signal used is taken and the formation of the image, depending on the features of the optical structure of the tissue. Due to the high speed of light, direct measurement of the delay of the signal Echo may not be. To the same cause. systems OCT is based on interference spectroscopy coherence weak (Low-coherence interferometry). that it would or by diodes, super-luminous (Superluminescent diode), or with lasers -h (when the Pulse are very short have) done.

systems OCT including in ophthalmology (in the form of non-invasive) and diagnosis of heart disease (as aggressive) are used.