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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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Journal ArticleDOI

Review of polarization sensitive optical coherence tomography and Stokes vector determination.

TL;DR: The theory and calculation of the Stokes vector of light reflected from turbid media is described, application of PS-OCT to contemporary biomedical imaging problems is given and effect of multiple scattering and speckle on the accuracy and noise of the computed Stokes parameters is discussed.
Journal ArticleDOI

Full range complex spectral optical coherence tomography technique in eye imaging

TL;DR: By reconstruction of both amplitude and phase, a new implementation of complex spectral optical coherence tomography (OCT) in biomedical imaging is demonstrated, able to use the negative and positive optical path differences to get images of objects of considerable thickness.
Journal ArticleDOI

Quantifying axonal loss after optic neuritis with optical coherence tomography.

TL;DR: To determine to what degree changes in retinal nerve fiber layer (RNFL) thickness after optic neuritis (ON) correlate with either visual recovery or impairment, a large number of animals have been fitted with RNFLs and the results have shown associations with visual recovery and impairment.
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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