1. Joseph A. Izatt

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    1. Mentioned In 294 Articles

    2. Interferometers for optical coherence tomography and reflectometry

      An interferometer system includes an optical radiation source, an optical circulator connected between the optical radiation source and a sample location for transmitting optical radiation from the optical radiation source to the sample location, an output of the optical circulator connected to direct optical radiation to an optical detector. Various embodiments of such a system are possible. A method of performing OCDR or OCT imaging of a sample which involves ...
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    3. Bioptigen Completes Series A Round Funding Investment Closes at $1.3 Million

      Bioptigen Completes Series A Round Funding Investment Closes at $1.3 Million
      FOR IMMEDIATE RELEASE August 7, 2006 Contact: Winn Maddrey 704.905.2912 BIOPTIGEN COMPLETES SERIES A FUNDING ROUND Investment Closes at $1.3 Million DURHAM, N.C. – Bioptigen, an optical technology company developing proprietary advances in the field of optical coherence tomography (OCT), announces the closing of its Series A round of funding. The round closed at $1.3 million and investors included the Piedmont Angel Network, the Inception Micro-Angel ...
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    4. Method and system for quantitative image correction for optical coherence tomography

      A method of correcting optical coherence tomography (OCT) image data obtained from a layered media sample includes identifying at least one interface from the obtained OCT data and correcting the OCT data for distortion at the at least one interface. The OCT image data can be corrected for extrinsic distortions, such as those caused by scan geometry, as well as, intrinsic distortions, such as those caused by refraction at each ...
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    5. Aspects of basic OCT engine technologies for high speed optical coherence tomography and light source and other improvements in optical coherence tomography

      ...d J. G. Fujimoto, "Optical Coherence Microscopy in Scattering Media," Opt. Lett., vol. 19, pp. 590 592, 1994, J. A. Izatt, M. D. Kulkarni, H.-W. Wang, K. Kobayashi, and M. V. Sivak,"Optical Coherence Tomography and Micro...
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    6. System and method for low coherence broadband quadrature interferometry

      A quadrature broadband interferometry system and method obtains a complete complex interferometric signal instantaneously in both homodyne and heterodyne systems in a simple, compact, and inexpensive setup. This is accomplished by separating interferometric components from non-interferometric components in each of at least two detector signals of an interferometer having a number of N.times.N couplers, scaling the interferometric components, and generating real and imaginary parts of a complex interferometric ...
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    7. Phase-referenced doppler optical coherence tomography

      A phase-referenced Doppler optical coherence tomography (OCT) system includes a low-coherence optical radiation source and a reference source co-propagated to a sample arm and a reference arm. The low-coherence and reference optical radiation reflected from the reference and arms is detected by a pair of detectors, yielding OCT and reference interferometric data output signals. The reference interferometric data output signal can be used to correct the OCT interferometric to yield ...
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    8. Frequency-encoded parallel OCT and associated systems and methods

      Frequency-encoded parallel OCT and associated systems and methods
      Rapid scan optical delay techniques are used in parallel implementation of OCT using a detector and signal processing can be carried out using algorithms. Frequency encoded parallel OCT and multi-path, frequency encoded reference delay networks are used. A large number of frequency-correlated depth channels are used to acquire multiple depth scans of a sample. A different frequency shift (Doppler shift) on each different path length, or delay, is used to ...
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    9. Doppler flow imaging using optical coherence tomography

      Doppler flow imaging using optical coherence tomography
      A method for generating a velocity-indicating, tomographic image of a sample in an optical coherence tomography system includes the steps of (a) acquiring cross-correlation data from the interferometer; (b) generating a grayscale image from the cross-correlation data indicative of a depth-dependent positions of scatterers in the sample; (c) processing the cross-correlation data to produce a velocity value and location of a moving scatterer in the sample; (d) assigning a color ...
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    10. Interferometers for optical coherence domain reflectometry and optical coherence tomography using nonreciprocal optical elements

      An interferometer system includes an optical radiation source, an optical circulator connected between the optical radiation source and a sample location for transmitting optical radiation from the optical radiation source to the sample location, an output of the optical circulator connected to direct optical radiation to an optical detector. Various embodiments of such a system are possible. A method of performing OCDR or OCT imaging of a sample which involves ...
      Read Full Article
    11. Optical imaging device

      An Optical Coherence Tomography (OCT) device irradiates a biological tissue with low coherence light, obtains a high resolution tomogram of the inside of the tissue by low-coherent interference with scattered light from the tissue, and is provided with an optical probe which includes an optical fiber having a flexible and thin insertion part for introducing the low coherent light. When the optical probe is inserted into a blood vessel or ...
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    12. Optical imaging device

      An Optical Coherence Tomography (OCT) device irradiates a biological tissue with low coherence light, obtains a high resolution tomogram of the inside of the tissue by low-coherent interference with scattered light from the tissue, and is provided with an optical probe which includes an optical fiber having a flexible and thin insertion part for introducing the low coherent light. When the optical probe is inserted into a blood vessel or ...
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    13. 271-285 of 294 « 1 2 ... 16 17 18 19 20 »
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  2. About Joseph A. Izatt

    Joseph A. Izatt

    Joseph A. Izatt is a Professor of Biomedical Engineering, Associate Professor of Ophthalmology.  Dr. Izatt holds appointments in both the Department of Biomedical Engineering and the Department of Opthalmology. Izatt is also the Director of the Laboratory for Biophotonics in the Fitzpatrick Center for Photonics and Communications.  Izatt's research interest include biomedical optics, spectroscopy, and imaging; laser-tissue interactions; optical and ultrasonic signal processing; novel methods for high-resolution, and minimally invasive medical imaging and tissue characterization.

  3. Quotes

    1. An historic issue with OCT is that the depth resolution is typically several times better than the lateral resolution...If the layers of imaged tissues happen to be horizontal, then they're well defined in the scan. But to extend the full power of OCT for live imaging of tissues throughout the body, a method for overcoming the tradeoff between lateral resolution and depth of imaging was needed.
      In Machine learning increases resolution of eye imaging technology
    2. The use of metal nanoparticles as contrast agents with photothermal OCT technology could lead to a host of potential clinical applications.
      In Heating Up Microscopy