1. Medical University of Vienna

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    1. Mentioned In 437 Articles

    2. Synthetic subaperture-based angle-independent Doppler flow measurements using single-beam line field optical coherence tomography in vivo

      Synthetic subaperture-based angle-independent Doppler flow measurements using single-beam line field optical coherence tomography in vivo
      We demonstrate a synthetic subaperture-based angle-independent Doppler flow calculation, using a line field spectral domain optical coherence tomography system. The high speed of the system features a high phase stability over the volume, which is necessary to apply synthetic subapertures in the aperture plane. Thus, the flow component for each subaperture can be reconstructed in postprocessing. Capillary phantom and in vivo retinal imaging experiments were performed to validate and demonstrate ...
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    3. Multimodal Retinal Imaging of the Angiofibrotic Switch in Neovascular AMD

      Multimodal Retinal Imaging of the Angiofibrotic Switch in Neovascular AMD
      The content of this research project is to identify the angiofibrotic switch, the transition from angiogenesis to fibrosis, in neovascular age-related macular degeneration (nAMD) longitudinally. AMD is the most important cause of vision loss of the elderly in industrialized countries. Despite optimal treatment about 50% of eyes with nAMD develop fibrosis within 2 years, causing irreversible damage to the retina and functional loss. Objective measurement of fibrosis, however, is challenging ...
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    4. Reproducibility of Dual Beam Doppler Fourier-domain Optical Coherence Tomography in Healthy Subjects

      Reproducibility of Dual Beam Doppler Fourier-domain Optical Coherence Tomography in Healthy Subjects
      Dual beam Doppler Fourier-domain Optical coherence tomography (DOCT) is a noninvasive technique to quantify total retinal blood flow. To enable further development of this technique it is essential to assess short- and long-term reproducibility of DOCT blood flow measurements. In the present study, total retinal blood flow will be measured with DOCT at multiple time points to gain information of short- and long-term reproducibility. In addition, provocation with flickering light ...
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    5. Summary of 6th International Meeting on OCT Angiography & Advances in OCT in Rome December 2018: A Tremendous Success

      Summary of 6th International Meeting on OCT Angiography & Advances in OCT in Rome December 2018: A Tremendous Success
      On December 14 and 15 2018, over 1400 ophthalmologists participated in Rome at tha most important meeting on OCT and OCT Angiography. the 6th international meeting on OCT Angiography, advances in OCT . The organizer, Dr Lumbroso has, since he started to organize these meetings, a well-defined objective: informing ophthalmologist in any country on the new clinical possibilities of Ocular imaging. The policy is to invite the best speakers in the ...
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    6. Quantitative analysis of choriocapillaris in non-human primates using swept-source optical coherence tomography angiography (SS-OCTA)

      Quantitative analysis of choriocapillaris in non-human primates using swept-source optical coherence tomography angiography (SS-OCTA)
      The choriocapillaris is a unique vascular plexus located posterior to the retinal pigment epithelium. In recent years, there is an increasing interest in the examination of the interrelationship between the choriocapillaris and eye diseases. We used several techniques to study choroidal perfusion, including laser Doppler flowmetry, laser speckle flowgraphy, and optical coherence tomography angiography (OCTA), but with the latter no standardized algorithm for quantitative analysis has been provided. We analyzed ...
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    7. Optical coherence tomography angiography and photoacoustic imaging in dermatology

      Optical coherence tomography angiography and photoacoustic imaging in dermatology
      Optical coherence tomography angiography (OCTA) is a relatively novel functional extension of the widely accepted ophthalmic imaging tool named optical coherence tomography (OCT). Since OCTAs debut in ophthalmology, researchers have also been trying to expand its translational application into dermatology. The ability of OCTA in resolving microvasculature has shown promising results in imaging skin diseases. Meanwhile, photoacoustic imaging (PAI), which uses laser pulse induced ultrasound waves as the signal, has ...
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    8. Numerically focused full-field swept-source optical coherence microscopy with structured illumination

      Numerically focused full-field swept-source optical coherence microscopy with structured illumination
      This paper presents an experimental investigation of the possibility of transverse resolution improvement combined with effective numerically focused 3D imaging in full-field swept-source optical coherence microscopy (OCM) by using structured illumination and specific numerical post-processing. The possibility of transverse resolution improvement of the OCM coherence signal combined with the possibility of numerical focusing is demonstrated by imaging a resolution test target in the optical focus and defocus regions. The possibility ...
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    9. Dynamic Changes of Retinal Microaneurysms in Diabetes Imaged With In Vivo Adaptive Optics Optical Coherence Tomography

      Dynamic Changes of Retinal Microaneurysms in Diabetes Imaged With In Vivo Adaptive Optics Optical Coherence Tomography
      Purpose : To prospectively monitor microaneurysms (MAs) in three dimensions using adaptive optics optical coherence tomography (AOOCT). Methods : Patients with diabetes mellitus and parafoveal MAs were included in this longitudinal study. At baseline, MAs were identified in standard fluorescein angiography (FA) and subsequently imaged with an AOOCT prototype, incorporated into an AO fundus camera (RTX1, Imagine Eyes) device. Imaging was repeated every 3 months in each patient to explore the potential ...
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    10. Vertical Hyperreflective Lesions on Optical Coherence Tomography in Vitreoretinal Lymphoma

      Vertical Hyperreflective Lesions on Optical Coherence Tomography in Vitreoretinal Lymphoma
      Importance Vitreoretinal lymphoma is a diagnostic challenge and the pathophysiology is still unclear. Objective To describe an imaging finding seen on optical coherence tomography (OCT) of patients with vitreoretinal lymphoma. Design, Setting, and Participants This case series study was a retrospective medical record review of patients who received a diagnosis of vitreoretinal lymphoma at the Department of Ophthalmology at Northwestern University between July 2014 and January 2016. Main Outcomes and ...
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    11. Mapping of Corneal Layer Thicknesses With Polarization-Sensitive Optical Coherence Tomography Using a Conical Scan Pattern

      Mapping of Corneal Layer Thicknesses With Polarization-Sensitive Optical Coherence Tomography Using a Conical Scan Pattern
      Purpose : We demonstrate segmentation and mapping of corneal layers (epithelium, Bowman's layer, and stroma) across the entire cornea (limbus to limbus), using additional contrast provided by polarization-sensitive optical coherence tomography (PS-OCT) and analyze the reproducibility of the procedure. Methods : A custom built PS-OCT system operating at 1045 nm central wavelength with conical scanning was used for image acquisition. Conical scanning allows for almost perpendicular beam incidence on the corneal ...
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    12. Incidence of late‐acquired stent malapposition of drug eluting stents with second generation permanent and biodegradable polymer coatings—A prospective, randomized comparison using optical coherence tomography

      Incidence of late‐acquired stent malapposition of drug eluting stents with second generation permanent and biodegradable polymer coatings—A prospective, randomized comparison using optical coherence tomography
      Objectives and Background Polymer coatings of drug‐eluting stents (DES) may induce allergic reactions and inflammation, resulting in late‐acquired stent malapposition (LASM) with the risk of stent thrombosis. This study evaluated, if biodegradable polymer (BP) reduces the incidence of LASM compared to permanent polymer (PP) after treatment with newer generation DES. Methods and Results Fifty patients with 59 lesions were randomized (2:1) to elective treatment with second generation ...
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    13. Correlation between morphological characteristics in spectral‐domain‐optical coherence tomography, different functional tests and a patient's subjective handicap in acute central serous chorioretinopathy

      Correlation between morphological characteristics in spectral‐domain‐optical coherence tomography, different functional tests and a patient's subjective handicap in acute central serous chorioretinopathy
      Purpose The purpose of this study was to identify quantitatively measurable morphologic optical coherence tomography (OCT) characteristics in patients with an acute episode of central serous chorioretinopathy (CSC) and evaluate their correlation to functional and psychological variables for their use in daily clinical practice. Methods Retinal thickness (RT), the height, area and volume of subretinal fluid (SRF)/pigment epithelium detachments were evaluated using the standardized procedures of the Vienna Reading ...
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    14. Combination of High-Resolution Optical Coherence Tomography and Raman Spectroscopy for Improved Staging and Grading in Bladder Cancer

      Combination of High-Resolution Optical Coherence Tomography and Raman Spectroscopy for Improved Staging and Grading in Bladder Cancer
      We present a combination of optical coherence tomography (OCT) and Raman spectroscopy (RS) for improved diagnosis and discrimination of different stages and grades of bladder cancer ex vivo by linking the complementary information provided by these two techniques. Bladder samples were obtained from biopsies dissected via transurethral resection of the bladder tumor (TURBT). As OCT provides structural information rapidly, it was used as a red-flag technology to scan the bladder ...
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    15. Artificial intelligence and deep learning in ophthalmology

      Artificial intelligence and deep learning in ophthalmology
      Artificial intelligence (AI) based on deep learning (DL) has sparked tremendous global interest in recent years. DL has been widely adopted in image recognition, speech recognition and natural language processing, but is only beginning to impact on healthcare. In ophthalmology, DL has been applied to fundus photographs, optical coherence tomography and visual fields, achieving robust classification performance in the detection of diabetic retinopathy and retinopathy of prematurity, the glaucoma-like disc ...
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    16. Multimodal Optical Medical Imaging Concepts based on Optical Coherence Tomography

      Multimodal Optical Medical Imaging Concepts based on Optical Coherence Tomography
      Optical medical imaging techniques in general exhibit outstanding resolution and molecule-specific contrast. They come however with a limited penetration in depth and small field of view. Multimodal concepts help to combine complementary strengths of different imaging technologies. The present article reviews the advantages of optical multimodal imaging concepts using optical coherence tomography (OCT) as core technology. In particular we first discuss polarization sensitive OCT, Doppler OCT and OCT angiography, OCT ...
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    17. 1-15 of 437 1 2 3 4 ... 27 28 29 »
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  2. 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.