01-07-2017, 11:09 AM
Optical Coherence Tomography (OCT) is an established medical imaging technique that uses light to capture three-dimensional micrometric resolution images from within optical scattering media (eg, biological tissue). Optical coherence tomography is based on low coherence interferometry, typically using near-infrared light. The use of relatively long wavelength light allows it to penetrate the dispersion medium. Confocal microscopy, another optical technique, usually penetrates less deeply into the sample but with higher resolution.
Depending on the properties of the light source (superluminescent diodes, pulsed ultra-short lasers and supercontinuous lasers), optical coherence tomography has achieved submicron resolution (with very broad spectrum sources emitting in a wavelength range of ~ 100 Nm) required citation].
Optical coherence tomography is part of a class of optical tomography techniques. A relatively recent embodiment of optical coherence tomography, frequency domain optical coherence tomography, provides advantages in the signal-to-noise ratio, allowing for faster acquisition of the signal. Commercially available optical coherence tomography systems are used in a variety of applications, including art preservation and diagnostic medicine, especially in ophthalmology and optometry, where they can be used to obtain detailed images from within the retina. Recently, it has also begun to be used in interventional cardiology to help diagnose coronary heart disease. He has also shown promise in dermatology to improve the diagnostic process.
Depending on the properties of the light source (superluminescent diodes, pulsed ultra-short lasers and supercontinuous lasers), optical coherence tomography has achieved submicron resolution (with very broad spectrum sources emitting in a wavelength range of ~ 100 Nm) required citation].
Optical coherence tomography is part of a class of optical tomography techniques. A relatively recent embodiment of optical coherence tomography, frequency domain optical coherence tomography, provides advantages in the signal-to-noise ratio, allowing for faster acquisition of the signal. Commercially available optical coherence tomography systems are used in a variety of applications, including art preservation and diagnostic medicine, especially in ophthalmology and optometry, where they can be used to obtain detailed images from within the retina. Recently, it has also begun to be used in interventional cardiology to help diagnose coronary heart disease. He has also shown promise in dermatology to improve the diagnostic process.