Optical coherence tomography (OCT) is a high-resolution imaging technique with most of its applications in medicine and biology. OCT uses coherent near-infrared light to obtain micrometer-level depth resolved images of biological tissue or other scattering media.

2019年8月14日 · Optical coherence tomography (OCT) is a non-contact imaging technique which generates cross-sectional images of tissue with high resolution. Therefore it is especially valuable in organs, where traditional microscopic tissue diagnosis by means of biopsy is not available—such as the human eye.

OCT is an optical imaging modality that is used to perform high resolution, cross-sectional imaging of internal microstructures in materials and biological systems by measuring the echo time delay and magnitude of backscattered light.

In the past, phase-resolved Doppler OCT (D-OCT) based on time domain OCT (TD-OCT) was proven able to make high-resolution, high-velocity-sensitivity cross-sectional images of in vivo blood flow [74, 75, 77, 80 – 82].

2024年10月6日 · Time-domain OCT (TD-OCT) is a first-generation technology that uses a low-coherence interferometer to measure the time delay and magnitude of backscattered light from different tissue depths, subsequently constructing two-dimensional images in a manner similar to ultrasound technology. [3]

Working principle of TD-OCT : light from the light source is split into the reference beam and the central beam. Back reflected light from both arms is combined again and recorded by the detector.

Time-domain OCT (TD-OCT) systems featured scan rates of 400 A-scans per second with an axial resolution of 8–10 μm in tissue [2]. In 2006, the first commercially available spectral-domain (Fourier domain) OCT (SD-OCT) system was introduced.

Optical coherence tomography (OCT) is a noninvasive, high-resolution optical imaging technology that creates cross-sectional images from interference signals received from an object under investigation and a local reference.

2008年8月13日 · This original OCT technology, time-domain OCT (TD-OCT), was hindered by its relatively slow scanning speed, which limited the amount of retina that could be sampled during a scan acquisition and allowed eye movements to interfere with measurements in patients with unstable fixation.

2024年10月6日 · Time-domain OCT (TD-OCT) is a first-generation technology that uses a low-coherence interferometer to measure the time delay and magnitude of backscattered light from different tissue depths, subsequently constructing two-dimensional images in a manner similar to ultrasound technology.