1. Optores

    0 Comments Leave a Comment

    1-16 of 16

    1. Mentioned In 16 Articles

    2. Flexible A-scan rate MHz-OCT: efficient computational downscaling by coherent averaging

      Explore OSA | OSA Publishing Tunable Sources
      Flexible A-scan rate MHz-OCT: efficient computational downscaling by coherent averaging
      In order to realize adjustable A-scan rates of fast optical coherence tomography (OCT) systems, we investigate averaging of OCT image data acquired with a MHz-OCT system based on a Fourier Domain Mode Locked (FDML) laser. Increased system sensitivity and image quality can be achieved with the same system at the cost of lower imaging speed. Effectively, the A-scan rate can be reduced in software by a freely selectable factor. We ...
      Read Full Article
      Mentions: Robert A. Huber University of Lübeck Tom Pfeiffer

    3. Simultaneous morphological and flow imaging enabled by megahertz intravascular Doppler optical coherence tomography

      Explore IEEE Xplore Cardiology
      Simultaneous morphological and flow imaging enabled by megahertz intravascular Doppler optical coherence tomography
      We demonstrate three-dimensional intravascular flow imaging compatible with routine clinical image acquisition workflow by means of megahertz (MHz) intravascular Doppler Optical Coherence Tomography (OCT). The OCT system relies on a 1.1 mm diameter motorized imaging catheter and a 1.5 MHz Fourier Domain Mode Locked (FDML) laser. Using a post processing method to compensate the drift of the FDML laser output, we can resolve the Doppler phase shift between ...
      Read Full Article
      Mentions: Robert A. Huber Gijs van Soest Anton F. W. van der Steen

    4. Functional retinal imaging using adaptive optics swept-source OCT at 1.6  MHz

      Explore OSA | OSA Publishing
      Functional retinal imaging using adaptive optics swept-source OCT at 1.6  MHz
      Objective optical assessment of photoreceptor function may permit earlier diagnosis of retinal disease than current methods such as perimetry, electrophysiology, and clinical imaging. In this work, we describe an adaptive optics (AO) optical coherence tomography (OCT) system designed to measure functional responses of single cones to visible stimuli. The OCT subsystem consisted of a raster-scanning Fourier-domain mode-locked laser that acquires A scans at 1.64 MHz with a center wavelength ...
      Read Full Article
      Mentions: John S. Werner Robert J. Zawadzki UCSD

    5. OptoRes presents world-record 3 MHz swept laser at SPIE BiOS / Photonics West in San Francisco

      Explore Optical Coherence Tomography News Other Business News , Tunable Sources
      OptoRes presents world-record 3 MHz swept laser at SPIE BiOS / Photonics West in San Francisco
      ...tor Optores GmbH Phone: +49 89 927 78775 Email: thomas.klein@optores.com Information is also available on www.optores.com. Ideally suited for optical coherence tomography, Optores‘ FDML laser with 3 MHz sweep rate is mor...
      Read Full Article
      Mentions: James G. Fujimoto Robert A. Huber University of Lübeck

    6. Ultra low noise Fourier domain mode locked laser for high quality megahertz optical coherence tomography

      Explore OSA | OSA Publishing Tunable Sources
      Ultra low noise Fourier domain mode locked laser for high quality megahertz optical coherence tomography
      We investigate the origin of high frequency noise in Fourier domain mode locked (FDML) lasers and present an extremely well dispersion compensated setup which virtually eliminates intensity noise and dramatically improves coherence properties. We show optical coherence tomography (OCT) imaging at 3.2 MHz A-scan rate and demonstrate the positive impact of the described improvements on the image quality. Especially in highly scattering samples, at specular reflections and for strong ...
      Read Full Article
      Mentions: Robert A. Huber University of Lübeck Technical University of Munich

    7. Feature Of The Week 09/10/2017: Thermo-elastic Optical Coherence Tomography

      Explore Optical Coherence Tomography News
      Feature Of The Week 09/10/2017: Thermo-elastic Optical Coherence Tomography
      The conventional OCT image contrast is derived from elastic scattering, and shows the internal structure of the sample. The determination of the tissue type in OCT images usually depends on the interpretation by the image reader. More accurate tissue type contrast may be achieved by new OCT-based imaging modalities, with sensitivity to other physical parameters than scattering alone. Phase-sensitive OCT can detect tissue motion on nanometer-to- micrometer length scales using ...
      Read Full Article
      Mentions: Robert A. Huber Delft University of Technology Chinese Academy of Sciences

    8. Thermo-elastic optical coherence tomography

      Explore OSA | OSA Publishing
      Thermo-elastic optical coherence tomography
      The absorption of nanosecond laser pulses induces rapid thermo-elastic deformation in tissue. A sub-micrometer scale displacement occurs within a few microseconds after the pulse arrival. In this Letter, we investigate the laser-induced thermo-elastic deformation using a 1.5 MHz phase-sensitive optical coherence tomography (OCT) system. A displacement image can be reconstructed, which enables a new modality of phase-sensitive OCT, called thermo-elastic OCT. An analysis of the results shows that the ...
      Read Full Article
      Mentions: Robert A. Huber Delft University of Technology Chinese Academy of Sciences

    9. INTRAPAPILLARY PROLIFERATION IN OPTIC DISK PITS: Clinical Findings and Time-Related Changes

      Explore LWW Online Ophthalmology
      INTRAPAPILLARY PROLIFERATION IN OPTIC DISK PITS: Clinical Findings and Time-Related Changes
      Purpose: To investigate the structural changes of intrapapillary proliferations associated with optic disk pits (ODPs) and optic disk pit maculopathy (ODP-M) using enhanced depth-spectral domain-optical coherence tomography (SD-EDI-OCT) and megahertz optical coherence tomography (MHz-OCT). Methods: Sixteen eyes of patients with ODPs were studied. Papillary and peripapillary areas were repeatedly examined with SD-EDI-OCT over time. To evaluate swept-source OCT, some of the patients additionally received MHz-OCT-imaging. Results: MHz-OCT or SD-EDI images ...
      Read Full Article
      Mentions: Robert A. Huber Wolfgang Wieser University of Lübeck

    10. Analysis of FDML lasers with meter range coherence

      Explore Conference Proceedings Tunable Sources
      Analysis of FDML lasers with meter range coherence
      FDML lasers provide sweep rates in the MHz range at wide optical bandwidths, making them ideal sources for high speed OCT. Recently, at lower speed, ultralong-range swept-source OCT has been demonstrated using a tunable vertical cavity surface emitting laser (VCSEL) and also using a Vernier-tunable laser. These sources provide relatively high sweep rates and meter range coherence lengths. In order to achieve similar coherence, we developed an extremely well dispersion ...
      Read Full Article
      Mentions: Robert A. Huber Wolfgang Wieser University of Lübeck

    11. Imaging of the human choroid with a 1.7 MHz A-scan rate FDML swept source OCT system

      Explore Conference Proceedings
      Imaging of the human choroid with a 1.7 MHz A-scan rate FDML swept source OCT system
      We demonstrate OCT angiography (OCTA) and Doppler OCT imaging of the choroid in the eyes of two healthy volunteers and in a geographic atrophy case. We show that visualization of specific choroidal layers requires selection of appropriate OCTA methods. We investigate how imaging speed, B-scan averaging and scanning density influence visualization of various choroidal vessels. We introduce spatial power spectrum analysis of OCT en face angiographic projections as a method ...
      Read Full Article
      Mentions: John S. Werner UC Davis Robert J. Zawadzki

    12. Beyond Better Clinical Care: Optical Coherence Tomography's Economic Impact

      Explore BioOptics World
      Beyond Better Clinical Care: Optical Coherence Tomography's Economic Impact
      The optical coherence tomography (OCT) industry has grown dramatically in its first 25 years, and while the positive effects on patient clinical care are the most important measure of OCT's success, its contributions to the economy in jobs, tax receipts, and healthcare savings are also noteworthy. The field of optical coherence tomography (OCT) has grown dramatically since its discovery in the early 1990s. The commercialization and growth of OCT ...
      Read Full Article
      Mentions: Tomophase Corporation Heliotis AG Imalux

    13. Flexible A-scan rate MHz OCT: computational downscaling by coherent averaging

      Explore Conference Proceedings
      Flexible A-scan rate MHz OCT: computational downscaling by coherent averaging
      In order to realize fast OCT-systems with adjustable line rate, we investigate averaging of image data from an FDML based MHz-OCT-system. The line rate can be reduced in software and traded in for increased system sensitivity and image quality. We compare coherent and incoherent averaging to effectively scale down the system speed of a 3.2 MHz FDML OCT system to around 100 kHz in postprocessing. We demonstrate that coherent ...
      Read Full Article
      Mentions: Robert A. Huber Wolfgang Wieser University of Lübeck

    15. Heartbeat OCT: in vivo intravascular megahertz-optical coherence tomography

      Explore OSA | OSA Publishing
      Heartbeat OCT: in vivo intravascular megahertz-optical coherence tomography
      Cardiac motion artifacts, non-uniform rotational distortion and undersampling affect the image quality and the diagnostic impact of intravascular optical coherence tomography (IV-OCT). In this study we demonstrate how these limitations of IV-OCT can be addressed by using an imaging system that we called Heartbeat OCT, combining a fast Fourier Domain Mode Locked laser, fast pullback, and a micromotor actuated catheter, designed to examine a coronary vessel in less than one ...
      Read Full Article
      Mentions: Robert A. Huber Evelyn Regar Delft University of Technology
    18. 1-16 of 16
  1. Search:

  2. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology

    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents

    3. Technology:

      Broadband Sources, Probes, Tunable Sources

    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks

  4. About Optores

    Optores

    Optores introduces the worlds first swept laser source with a sweep rate of up to 1.5 MHz for tomorrow's optical coherence tomography systems. The Optores swept source is based on all-fiber Fourier-domain mode-locked (FDML) laser technology. Designed for record speed, the Optores swept laser also features long coherence lengths and very high output powers beyond 80 mW. Three configuration variants are available to match your requirements.

  5. Related Topics

    1. Heartbeat OCT: in vivo intravascular megahertz-optical coherence tomography
      10 articles also mentioned Robert A. Huber
    2. Optores Introduces OGOP – the Optores GPU OCT Processing Library
      4 articles also mentioned Thomas Klein