1. University of Vienna

    0 Comments Leave a Comment

    1-15 of 32 1 2 »

    1. Mentioned In 32 Articles

    2. A Quantitative Model for Optical Coherence Tomography

      Explore arxiv.org
      A Quantitative Model for Optical Coherence Tomography
      Optical coherence tomography (OCT) is a widely used imaging technique in the micrometer regime, which gained accelerating interest in medical imaging in the last twenty years. In up-to-date OCT literature [5, 6] certain simplifying assumptions are made for the reconstructions, but for many applications a more realistic description of the OCT imaging process is of interest. In mathematical models, for example, the incident angle of light onto the sample is ...
      Read Full Article
      Mentions: Medical University of Vienna University of Vienna

    3. Identification and quantification of fibrotic areas in the human retina using polarization-sensitive OCT

      Explore OSA | OSA Publishing Ophthalmology
      Identification and quantification of fibrotic areas in the human retina using polarization-sensitive OCT
      Subretinal fibrosis is one of the most prevalent causes of blindness in the elderly population, but a true gold standard to objectively diagnose fibrosis is still lacking. Since fibrotic tissue is birefringent, it can be detected by polarization-sensitive optical coherence tomography (PS-OCT). We present a new algorithm to automatically detect, segment, and quantify fibrotic lesions within 3D data sets recorded by PS-OCT. The algorithm first compensates for the birefringence of ...
      Read Full Article
      Mentions: University of Vienna

    4. SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY, FLUORESCEIN ANGIOGRAPHY, AND INDOCYANINE GREEN ANGIOGRAPHY COMPARISONS REVISITED: Using a Novel Deep-Learning-Assisted Approach for Image Registration

      Explore LWW Online Ophthalmology
      SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY, FLUORESCEIN ANGIOGRAPHY, AND INDOCYANINE GREEN ANGIOGRAPHY COMPARISONS REVISITED: Using a Novel Deep-Learning-Assisted Approach for Image Registration
      Purpose: To compare area measurements between swept source optical coherence tomography angiography ( SSOCTA ), fluorescein angiography ( FA ), and indocyanine green angiography ( ICGA ) after applying a novel deep-learning-assisted algorithm for accurate image registration. Methods: We applied an algorithm for the segmentation of blood vessels in FA , ICGA , and SSOCTA images of 24 eyes with treatment-naive neovascular age-related macular degeneration. We trained a model based on U-Net and Mask R-CNN for each imaging ...
      Read Full Article
      Mentions: University of Vienna

    5. Absolute depth LIBS-stratigraphy with NoScSiSp-OCT

      Explore ScienceDirect NDE/NDT
      Absolute depth LIBS-stratigraphy with NoScSiSp-OCT
      LIBS is a proven method for elemental analysis. It needs little to no sample preparation and relies solely on optical access to the sample. LIBS has therefore been handled as a promising analytical method for layered or structured samples with the potential to replace metallurgic cross-sections followed by SEM/EDX raster screenings. Due to the strong dependency of the ablation process on changing crater geometries, laser fluence, and plasma dynamics ...
      Read Full Article
      Mentions: University of Vienna RECENDT

    6. Optical coherence tomography (OCT) to image active and inactive retinoblastomas as well as retinomas

      Explore Wiley Online Library Ophthalmology
      Optical coherence tomography (OCT) to image active and inactive retinoblastomas as well as retinomas
      Purpose To illustrate Optical Coherence Tomography (OCT) images of active and inactive retinoblastoma (Rb) tumours. Methods Current observational study included patients diagnosed with retinoblastoma and retinoma who were presented at Amsterdam UMC and Jules‐Gonin Eye Hospital, between November 2010 and October 2017. Patients aged between 0 and 4 years were imaged under general anaesthesia with handheld OCT in supine position. Patients older than 4 years were imaged with the ...
      Read Full Article
      Mentions: Heidelberg Engineering University of Vienna Leica

    8. The inverse scattering problem for orthotropic media in polarization-sensitive optical coherence tomography

      Explore Home - Springer
      The inverse scattering problem for orthotropic media in polarization-sensitive optical coherence tomography
      In this paper we provide for a first time, to our knowledge, a mathematical model for imaging an anisotropic, orthotropic medium with polarization-sensitive optical coherence tomography. The imaging problem is formulated as an inverse scattering problem in three dimensions for reconstructing the electrical susceptibility of the medium using Maxwells equations. Our reconstruction method is based on the second-order Born-approximation of the electric field
      Read Full Article
      Mentions: University of Vienna

    9. PhD Student Opening in Functional Optical Imaging Employing Contrast Agents at the Medical University of Vienna

      Explore Optical Coherence Tomography News Jobs & Studentships
      PhD Student Opening in Functional Optical Imaging Employing Contrast Agents at the Medical University of Vienna
      ...cking. The position is guaranteed of funding for 3 years. The student will work for two years at the Medical University of Vienna and one year at the Nanyang Technological University in Singapore. A Master’s degree in v...
      Read Full Article
      Mentions: Medical University of Vienna Nanyang Technological University University of Vienna

    10. Ultra-low noise supercontinuum source for ultra-high resolution optical coherence tomography at 1300 nm

      Explore SPIE Digital Library Broadband Sources
      Ultra-low noise supercontinuum source for ultra-high resolution optical coherence tomography at 1300 nm
      Supercontinuum (SC) sources are of great interest for many applications due to their ultra-broad optical bandwidth, good beam quality and high power spectral density [1]. In particular, the high average power over large bandwidths makes SC light sources excellent candidates for ultra-high resolution optical coherence tomography (UHR-OCT) [2-5]. However, conventional SC sources suffer from high pulse-to-pulse intensity fluctuations as a result of the noise-sensitive nonlinear effects involved in the SC ...
      Read Full Article
      Mentions: University of Kent University of Vienna

    11. Quantitative reconstructions in multi-modal photoacoustic and optical coherence tomography imaging

      Explore IOPscience
      Quantitative reconstructions in multi-modal photoacoustic and optical coherence tomography imaging
      In this paper we perform quantitative reconstruction of the electric susceptibility and the Grneisen parameter of a non-magnetic linear dielectric medium using measurement of a multi-modal photoacoustic and optical coherence tomography system. We consider the mathematical model presented in Elbauet al(2015Handbook of Mathematical Methods in Imaginged O Scherzer (New York: Springer) pp 1169204), where a Fredholm integral equation of the first kind for the Grneisen parameter was derived. For ...
      Read Full Article
      Mentions: University of Vienna

    12. Quantitative reconstructions in multi-modal photoacoustic and optical coherence tomography imaging

      Explore arxiv.org
      Quantitative reconstructions in multi-modal photoacoustic and optical coherence tomography imaging
      In this paper we perform quantitative reconstruction of the electric susceptibility and the Gruneisen parameter of a non-magnetic linear dielectric medium using measurement of a multi-modal photoacoustic and optical coherence tomography system. We consider the mathematical model presented in [11], where a Fredholm integral equation of the first kind for the Gruneisen parameter was derived. For the numerical solution of the integral equation we consider a Galerkin type method.
      Read Full Article
      Mentions: University of Vienna

    13. The inverse scattering problem for orthotropic media in Polarization-sensitive Optical Coherence Tomography

      Explore arxiv.org
      The inverse scattering problem for orthotropic media in Polarization-sensitive Optical Coherence Tomography
      In this paper we provide a mathematical model for imaging an anisotropic, orthotropic medium with Polarization-Sensitive Optical Coherence Tomography (PS-OCT). The imaging problem is formulated as an inverse scattering problem in three dimensions for reconstructing the electrical susceptibility of the medium using Maxwells equations. Our reconstruction method is based on the second-order Born-approximation of the electric field.
      Read Full Article
      Mentions: University of Vienna

    14. Enhanced Diagnostic Capability for Glaucoma of 3-Dimensional Versus 2-Dimensional Neuroretinal Rim Parameters Using Spectral Domain Optical Coherence Tomography

      Explore LWW Online Ophthalmology
      Enhanced Diagnostic Capability for Glaucoma of 3-Dimensional Versus 2-Dimensional Neuroretinal Rim Parameters Using Spectral Domain Optical Coherence Tomography
      Purpose: To compare the diagnostic capability of 3-dimensional (3D) neuroretinal rim parameters with existing 2-dimensional (2D) neuroretinal and retinal nerve fiber layer (RNFL) thickness rim parameters using spectral domain optical coherence tomography (SD-OCT) volume scans. Materials and Methods: Design: Institutional prospective pilot study. Study population: 65 subjects (35 open-angle glaucoma patients, 30 normal patients). Observation procedures: One eye of each subject was included. SD-OCT was used to obtain 2D RNFL ...
      Read Full Article
      Mentions: Johns Hopkins University Harvard University Academic Medical Center at the University of Amsterdam

    15. A signal separation technique for sub-cellular imaging using dynamic optical coherence tomography

      Explore arxiv.org
      A signal separation technique for sub-cellular imaging using dynamic optical coherence tomography
      This paper aims at imaging the dynamics of metabolic activity of cells. Using dynamic optical coherence tomography, we introduce a new multiparticle dynamical model to simulate the movements of the collagen and the cell metabolic activity and develop an efficient signal separation technique for sub-cellular imaging. We perform a singular-value decomposition of the dynamic optical images to isolate the intensity of the metabolic activity. We prove that the largest eigenvalue ...
      Read Full Article
      Mentions: University of Vienna University of Zurich

    16. Inverse Problems of Combined Photoacoustic and Optical Coherence Tomography

      Explore arxiv.org
      Inverse Problems of Combined Photoacoustic and Optical Coherence Tomography
      Optical coherence tomography (OCT) and photoacoustic tomography (PAT) are emerging non-invasive biological and medical imaging techniques. It is a recent trend in experimental science to design experiments that perform PAT and OCT imaging at once. In this paper we present a mathematical model describing the dual experiment. Since OCT is mathematically modelled by Maxwell's equations or some simplifications of it, whereas the light propagation in quantitative photoacoustics is modelled ...
      Read Full Article
      Mentions: University of Vienna
    17. 1-15 of 32 1 2 »
  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 University of Vienna

    University of Vienna

    University of Vienna was founded in 1365 and is the oldest university in the German-speaking world and one of the largest in Central Europe. At present, about 72,000 students are enrolled at the University of Vienna, in more than 170 courses. The University of Vienna is also the largest teaching and research institution in Austria with close to 8,300 employees, 6,200 of which are scientists and academics.

  5. Related Topics

    1. Improved sensitivity measurement of the human eye length in vivo with Fourier domain optical coherence tomography
      15 articles also mentioned Medical University of Vienna
    2. Dispersion encoded full range frequency domain OCT
      3 articles also mentioned Cardiff University
    3. Structural and functional imaging by Fourier domain Optical Coherence Tomography
      2 articles also mentioned Massachusetts Institute of Technology
    4. Feature issue in Biomedical Optics Express: 25 Year Anniversary of Optical Coherence Tomography
      2 articles also mentioned Massachusetts General Hospital
    5. Imaging of the retinal pigment epithelium in age-related macular degeneration using polarization sensitive optical coherence tomography
      2 articles also mentioned Topcon Medical Systems