1. Articles from Gisela Ahrens

    1-2 of 2
    1. Ultrahigh-Resolution Transversal Polarization-Sensitive Optical Coherence Tomography: Structural Analysis and Strain-Mapping

      Abstract Optical coherence tomography (OCT), originally developed and so far nearly exclusively used for biomedical applications (e.g., [1,2]), is a contact-free, non-destructive technique based on low-coherence interferometry to image structures within translucent and turbid materials. Commonly, cross-sectional reflectivity images with a depth-resolution determined by the coherence length of the near-infrared light source are obtained. When OCT is performed in a polarization sensitive way (PS-OCT), additional information about birefringence within a material is obtained by mapping the retardation between ordinary and extraordinary rays [3]. Because birefringence is induced when strain occurs, PS-OCT provides depth resolved information about the internal ...
      Read Full Article
    2. En-face scanning optical coherence tomography with ultra-high resolution for material investigation

      En-face scanning optical coherence tomography with ultra-high resolution for material investigation
      Optical coherence tomography (OCT) is an emerging technique for cross-sectional imaging, originally developed for biological structures. When OCT is employed for material investigation, high-resolution and short measurement times are required, and for many applications, only transversal (en-face) scans yield substantial information which cannot be obtained from cross-sectional images oriented perpendicularly to the sample surface alone. In this work, we combine transversal with ultra-high resolution OCT: a broadband femto-second laser is used as a light source in combination with acousto-optic modulators for heterodyne signal generation and detection. With our setup we are able to scan areas as large as 3 x ...
      Read Full Article
    1-2 of 2
  1. 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
  2. Topics in the News

    1. (2 articles) Medical University of Vienna
    2. (2 articles) Upper Austrian Research GmbH
    3. (1 articles) Johannes Kepler University of Linz
  3. Popular Articles

  4. Picture Gallery

    En-face scanning optical coherence tomography with ultra-high resolution for material investigation Postdoctoral Fellows/Research Scientists at University of Washington, Seattle Perimeter Medical Imaging AI Announces Publication of Peer-Reviewed Journal Article Validating Potential Use of Wide-Field Optical Coherence Tomography (WF-OCT) in Head and Neck Surgeries Association of retinal thickness and microvasculature with cognitive performance and brain volumes in elderly adults A Deep Learning Framework for the Detection and Quantification of Reticular Pseudodrusen and Drusen on Optical Coherence Tomography Quantitative assessment of textural features in the early detection of diabetic retinopathy with optical coherence tomography angiography Line-field confocal optical coherence tomography of fibroepithelioma of Pinkus Assessment of demineralized tooth lesions using optical coherence tomography and other state-of-the-art technologies: a review Optic disc and retinal vessel densities assessment by optical coherence tomography angiography in patients with keratoconus Optical coherence tomography angiography in Bietti crystalline dystrophy Choroidal vascularity profile in diabetic eyes using wide field optical coherence tomography Diagnostic accuracy of OCTA and OCT for myopic choroidal neovascularisation: a systematic review and meta-analysis