1. Medical University of Vienna

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    1. Mentioned In 574 Articles

    2. Pulsatile tissue deformation dynamics of the murine retina and choroid mapped by 4D optical coherence tomography

      Explore OSA | OSA Publishing Ophthalmology
      Pulsatile tissue deformation dynamics of the murine retina and choroid mapped by 4D optical coherence tomography
      Irregular ocular pulsatility and altered mechanical tissue properties are associated with some of the most sight-threatening eye diseases. Here we present 4D optical coherence tomography (OCT) for the quantitative assessment and depth-resolved mapping of pulsatile dynamics in the murine retina and choroid. Through a pixel-wise analysis of phase changes of the complex OCT signal, we reveal spatiotemporal displacement characteristics across repeated frame acquisitions. We demonstrate in vivo fundus elastography (FUEL ...
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      Mentions: Medical University of Vienna

    3. Multi-task learning approach for volumetric segmentation and reconstruction in 3D OCT images

      Explore OSA | OSA Publishing Ophthalmology
      Multi-task learning approach for volumetric segmentation and reconstruction in 3D OCT images
      The choroid is the vascular layer of the eye that supplies photoreceptors with oxygen. Changes in the choroid are associated with many pathologies including myopia where the choroid progressively thins due to axial elongation. To quantize these changes, there is a need to automatically and accurately segment the choroidal layer from optical coherence tomography (OCT) images. In this paper, we propose a multi-task learning approach to segment the choroid from ...
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      Mentions: Medical University of Vienna Singapore Eye Research Institute Nanyang Technological University

    4. Quantification of intrinsic optical signals in the outer human retina using optical coherence tomography

      Explore The New York Academy of Sciences Ophthalmology
      Quantification of intrinsic optical signals in the outer human retina using optical coherence tomography
      Intrinsic optical signals constitute a noninvasive biomarker promising the objective assessment of retinal photoreceptor function. We employed a commercial optical coherence tomography (OCT) system and an OCT signal model for evaluation of optical path length (OPL) changes in the temporal outer retina of five healthy subjects during light adaptation. Data were acquired at 30 time points, in ambient light and during long duration stimulation with white light, and analyzed, employing ...
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      Mentions: Medical University of Vienna

    5. Effect of hyperoxia and hypoxia on retinal vascular parameters assessed with optical coherence tomography angiography

      Explore Wiley Online Library Ophthalmology
      Effect of hyperoxia and hypoxia on retinal vascular parameters assessed with optical coherence tomography angiography
      Purpose: To investigate the response of the superficial and deep capillary plexuses to hyperoxia and hypoxia using optical coherence tomography angiography (OCT-A) and retinal vessel analyzer. Methods: Twenty-four healthy volunteers participated in this randomized, double-masked, cross-over study. For each subject, two study days were scheduled: on one study day, hyperoxia was induced by breathing 100% oxygen whereas on the other study day, hypoxia was induced by breathing a mixture of ...
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      Mentions: Medical University of Vienna

    6. Combining OCT and OCTA for Focal Structure-Function Modeling in Early Primary Open-Angle Glaucoma

      Explore IOVS Journal Ophthalmology
      Combining OCT and OCTA for Focal Structure-Function Modeling in Early Primary Open-Angle Glaucoma
      Purpose: To investigate modeling of the focal visual field (VF) loss by combining structural measurements and vascular measurements in eyes with early primary open-angle glaucoma (POAG). Methods: In this cross-sectional study, subjects with early glaucoma (VF mean deviation, -6 dB) underwent optical coherence tomography (OCT) imaging, optical coherence tomography angiography (OCTA) imaging, and Humphrey 24-2 VF tests. Capillary perfusion densities (CPDs) were calculated after the removal of large vessels in ...
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      Mentions: University College London Medical University of Vienna Singapore Eye Research Institute

    7. The Application of Optical Coherence Tomography Angiography in Systemic Hypertension: A Meta-Analysis

      Explore Frontiers Ophthalmology
      The Application of Optical Coherence Tomography Angiography in Systemic Hypertension: A Meta-Analysis
      Objective: Multiple studies have compared various optical coherence tomography angiography (OCTA) parameters in participants with systemic hypertension vs. controls and have presented discordant findings. We conducted a meta-analysis to pool together data from different studies to generate an overall effect size and find out whether OCTA parameter(s) significantly differed in participants with systemic hypertension as compared to controls. Methods: We conducted a literature search through a search of electronic ...
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      Mentions: Medical University of Vienna Singapore Eye Research Institute National University of Singapore

    8. Optical coherence tomography in multiple sclerosis: A 3-year prospective multicenter study

      Explore Wiley Online Library Neurology , Ophthalmology
      Optical coherence tomography in multiple sclerosis: A 3-year prospective multicenter study
      Objective: To evaluate changes over 3 years in the thickness of inner retinal layers including the peripapillary retinal nerve fiber layer (pRNFL), and combined macular ganglion cell and inner plexiform layers (mGCIPL), in individuals with relapsing-remitting multiple sclerosis (RRMS) versus healthy controls; to determine whether optical coherence tomography (OCT) is sufficiently sensitive and reproducible to detect small degrees of neuroaxonal loss over time that correlate with changes in brain volume ...
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      Mentions: Johns Hopkins University University College London Medical University of Vienna

    9. Extended focal depth Fourier domain optical coherence microscopy with a Bessel-beam – LP02 mode – from a higher order mode fiber

      Explore OSA | OSA Publishing
      Extended focal depth Fourier domain optical coherence microscopy with a Bessel-beam – LP02 mode – from a higher order mode fiber
      We present a robust fiber-based setup for Bessel-like beam extended depth-of-focus Fourier-domain optical coherence microscopy, where the Bessel-like beam is generated in a higher order mode fiber module. In this module a stable guided LP 02 core mode is selectively excited by a long period grating written in the higher order mode fiber. Imaging performance of this system in terms of lateral resolution and depth of focus was analyzed using ...
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      Mentions: Medical University of Vienna Technical University of Denmark (DTU)

    10. Optical coherence tomography in multiple sclerosis: A 3-year prospective multicenter study

      Explore Wiley Online Library Neurology , Ophthalmology
      Optical coherence tomography in multiple sclerosis: A 3-year prospective multicenter study
      Objective: To evaluate changes over 3 years in the thickness of inner retinal layers including the peripapillary retinal nerve fiber layer (pRNFL), and combined macular ganglion cell and inner plexiform layers (mGCIPL), in individuals with relapsing-remitting multiple sclerosis (RRMS) versus healthy controls; to determine whether optical coherence tomography (OCT) is sufficiently sensitive and reproducible to detect small degrees of neuroaxonal loss over time that correlate with changes in brain volume ...
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      Mentions: Johns Hopkins University Medical University of Vienna University Hospital Zurich

    11. Diagnosis of Pituitary Adenoma Biopsies by Ultrahigh Resolution Optical Coherence Tomography Using Neuronal Networks

      Explore Frontiers
      Diagnosis of Pituitary Adenoma Biopsies by Ultrahigh Resolution Optical Coherence Tomography Using Neuronal Networks
      Objective: Despite advancements of intraoperative visualization, the difficulty to visually distinguish adenoma from adjacent pituitary gland due to textural similarities may lead to incomplete adenoma resection or impairment of pituitary function. The aim of this study was to investigate optical coherence tomography (OCT) imaging in combination with a convolutional neural network (CNN) for objectively identify pituitary adenoma tissue in an ex vivo setting. Methods: A prospective study was conducted to ...
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      Mentions: Medical University of Vienna

    12. Photonic integrated circuits for optical coherence tomography (Thesis)

      Explore Med Uni Wien (UMW) Student Theses
      Photonic integrated circuits for optical coherence tomography (Thesis)
      Optical coherence tomography (OCT) is a well established 3D cross-sectional imaging method for retinal diagnostics. However, the method is largely limited to a clinical setting, with more widespread utilization being hindered by both the size and the cost of current systems. A reduction of both would significantly increase the potential application range, especially, for point of care diagnostics. One approach to reduce the size and cost is the utilization of ...
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      Mentions: Medical University of Vienna

    13. In vivo human retinal swept source optical coherence tomography and angiography at 830 nm with a CMOS compatible photonic integrated circuit

      Explore Nature Publishing Group
      In vivo human retinal swept source optical coherence tomography and angiography at 830 nm with a CMOS compatible photonic integrated circuit
      Photonic integrated circuits (PIC) provide promising functionalities to significantly reduce the size and costs of optical coherence tomography (OCT) systems. This paper presents an imaging platform operating at a center wavelength of 830 nm for ophthalmic application using PIC-based swept source OCT. An on-chip Mach-Zehnder interferometer (MZI) configuration, which comprises an input power splitter, polarization beam splitters in the sample and the reference arm, and a 50/50 coupler for ...
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      Mentions: Exalos Medical University of Vienna

    14. Reconstruction of visible light optical coherence tomography images retrieved from discontinuous spectral data using a conditional generative adversarial network

      Explore OSA | OSA Publishing
      Reconstruction of visible light optical coherence tomography images retrieved from discontinuous spectral data using a conditional generative adversarial network
      Achieving high resolution in optical coherence tomography typically requires the continuous extension of the spectral bandwidth of the light source. This work demonstrates an alternative approach: combining two discrete spectral windows located in the visible spectrum with a trained conditional generative adversarial network (cGAN) to reconstruct a high-resolution image equivalent to that generated using a continuous spectral band. The cGAN was trained using OCT image pairs acquired with the continuous ...
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      Mentions: Medical University of Vienna

    16. Enhanced medical diagnosis for dOCTors: a perspective of optical coherence tomography

      Explore SPIE Digital Library
      Enhanced medical diagnosis for dOCTors: a perspective of optical coherence tomography
      Significance: After three decades, more than 75,000 publications, tens of companies being involved in its commercialization, and a global market perspective of about USD 1.5 billion in 2023, optical coherence tomography (OCT) has become one of the fastest successfully translated imaging techniques with substantial clinical and economic impacts and acceptance. Aim: Our perspective focuses on disruptive forward-looking innovations and key technologies to further boost OCT performance and therefore ...
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      Mentions: Medical University of Vienna Carl Zeiss Meditec
    17. 1-15 of 574 1 2 3 4 ... 37 38 39 »
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  4. About Medical University of Vienna

    Medical University of Vienna

    Medical University of Vienna.  In its structuring and alignment the Medical University of Vienna relies on the "triple track" strategy. Research, education and patient care represent the three cornerstones of the university's system. Center for Biomedical Engineering and Physics, Medical University of Vienna, Austria.  The Biomedical Engineering Group at the Department of Biomedical Engineering of the Medical School, University of Vienna, is situated in the University Hospital of Vienna, which is the biggest hospital of Austria, and one of the biggest in Europe. The Biomedical Engineering Group was concentrated here to promote medical research with modern technical means.

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