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Open AccessJournal ArticleDOI

Optical coherence tomography

TLDR
OCT as discussed by the authors uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way analogous to ultrasonic pulse-echo imaging.
Abstract
A technique called optical coherence tomography (OCT) has been developed for noninvasive cross-sectional imaging in biological systems. OCT uses low-coherence interferometry to produce a two-dimensional image of optical scattering from internal tissue microstructures in a way that is analogous to ultrasonic pulse-echo imaging. OCT has longitudinal and lateral spatial resolutions of a few micrometers and can detect reflected signals as small as approximately 10(-10) of the incident optical power. Tomographic imaging is demonstrated in vitro in the peripapillary area of the retina and in the coronary artery, two clinically relevant examples that are representative of transparent and turbid media, respectively.

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Citations
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Journal ArticleDOI

Diagnostic capability of optical coherence tomography in evaluating the degree of glaucomatous retinal nerve fiber damage.

TL;DR: RNFL thicknesses in eyes blinded by glaucoma provide an estimate of the component of the RNFL thickness, which is not related to visual function, which may serve as useful adjuncts in accurately and more objectively distinguishing normal fromglaucomatous eyes.
Journal ArticleDOI

Corneal pachymetry mapping with high-speed optical coherence tomography.

TL;DR: High-speed OCT provided noncontact, rapid, reproducible pachymetric mapping over a wide area of the cornea and is equivalent to ultrasound for CCT measurement before and after LASIK.
Patent

Optical methods for tissue analysis

TL;DR: In this article, the authors proposed a method and system to optically analyze samples such as tissue based on speckle patterns of microscopic motion, such as Brownian motion, which relates to methods and systems for optically analyzing samples.
Journal ArticleDOI

Photothermal detection of gold nanoparticles using phase-sensitive optical coherence tomography.

TL;DR: A new method for detecting gold nanoparticle contrast agents with excellent signal-to-noise performance at high speeds using OCT is demonstrated using a photothermal modulation technique and phase sensitive optical coherence tomography.
References
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Journal ArticleDOI

Computerized transverse axial scanning (tomography): Part I. Description of system. 1973.

TL;DR: A technique in which X-ray transmission readings are taken through the head at a multitude of angles: from these data, absorption values of the material contained within the head are calculated on a computer and presented as a series of pictures of slices of the cranium.
Journal ArticleDOI

Clinically detectable nerve fiber atrophy precedes the onset of glaucomatous field loss.

TL;DR: Nerve fiber layer defects expanded with time, often by the development and coalescence of adjacent areas of damage, and field defects closely corresponded, but nerve fiber layer loss was generally more widespread.
Journal ArticleDOI

Retinal ganglion cell atrophy correlated with automated perimetry in human eyes with glaucoma.

TL;DR: Estimates suggest that visual field sensitivity in automated testing begins to decline soon after the initial loss of ganglion cells in human eyes with glaucoma, and that this decline is most pronounced in areas that had 0-dB sensitivity in the field test.
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