1. Harald Sattmann

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    1. Mentioned In 20 Articles

    2. Comprehensive vascular imaging using optical coherence tomography-based angiography and photoacoustic tomography

      Comprehensive vascular imaging using optical coherence tomography-based angiography and photoacoustic tomography
      Studies have proven the relationship between cutaneous vasculature abnormalities and dermatological disorders, but to image vasculature noninvasively in vivo , advanced optical imaging techniques are required. In this study, we imaged a palm of a healthy volunteer and three subjects with cutaneous abnormalities with photoacoustic tomography (PAT) and optical coherence tomography with angiography extension (OCTA). Capillaries in the papillary dermis that are too small to be discerned with PAT are visualized ...
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    3. Akinetic all-semiconductor programmable swept-source at 1550 nm and 1310 nm with centimeters coherence length

      Akinetic all-semiconductor programmable swept-source at 1550 nm and 1310 nm with centimeters coherence length
      We demonstrate, for the first time, OCT imaging capabilities of a novel, akinetic (without any form of movement in the tuning mechanism), all-semiconductor, all-electronic tunable, compact and flexible swept source laser technology at 1550 nm and 1310 nm. To investigate its OCT performance, 2D and 3D ex vivo and in vivo OCT imaging was performed at different sweep rates, from 20 kHz up to 200 kHz, with different axial resolutions ...
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    4. High-speed polarization sensitive optical coherence tomography scan engine based on Fourier domain mode locked laser

      High-speed polarization sensitive optical coherence tomography scan engine based on Fourier domain mode locked laser
      We report on a new swept source polarization sensitive optical coherence tomography scan engine that is based on polarization maintaining (PM) fiber technology. The light source is a Fourier domain mode locked laser with a PM cavity that operates in the 1300 nm wavelength regime. It is equipped with a PM buffer stage that doubles the fundamental sweep frequency of 54.5 kHz. The fiberization allows coupling of the scan ...
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    5. Polarization sensitive optical coherence tomography of melanin provides intrinsic contrast based on depolarization

      Polarization sensitive optical coherence tomography of melanin provides intrinsic contrast based on depolarization
      Polarization sensitive optical coherence tomography (PS-OCT) is a functional extension of OCT. In addition to imaging based on tissue reflectivity, PS-OCT also enables depth-resolved mapping of sample polarization properties such as phase-retardation, birefringent axis orientation, Stokes vectors, and degree of polarization uniformity (DOPU). In this study, PS-OCT was used to investigate the polarization properties of melanin. In-vitro measurements in samples with varying melanin concentrations revealed polarization scrambling, i.e. depolarization ...
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    6. Feature Of The Week 7/31/11: Researchers From The Medical University of Vienna Demonstrate Ultra-High Speed Fiber Based PS-OCT

      Feature Of The Week 7/31/11: Researchers From The Medical University of Vienna Demonstrate Ultra-High Speed Fiber Based PS-OCT
      Researchers at the Medical University of Vienna have been doing pioneering work in the field of OCT for over 20 years including some of the first work on low-coherence interferometric imaging of the eye, fundamental work in developing spectral domain OCT, and many other contributions. A snap shot of some of their recent work can be seen Here. Recently they published another interesting paper on ultra-high speed fiber based polarization ...
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    7. In vivo observation of human retinal-cone outer-segment renewal

      In vivo observation of human retinal-cone outer-segment renewal
      Cone-disk shedding and generation can be observed using transverse-scanning optical coherence tomography and scanning-laser ophthalmoscopy. Vision is one of the most complex human senses. The eye projects images from our environment onto the retina, which consists of a variety of different cells. The retina preprocesses this information before sending it to the brain as electrical signals. Many different retinal diseases—such as age-related macular degeneration—distort the fragile retinal structure ...
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    8. Temporal changes of human cone photoreceptors observed in vivo with SLO/OCT

      Temporal changes of human cone photoreceptors observed in vivo with SLO/OCT
      In this study we use our previously introduced scanning laser ophthalmoscope (SLO) / transverse scanning optical coherence tomography (TS-OCT) instrument to investigate long term changes in cone photoreceptors. The instrument is capable to provide 3D information of the human cone photoreceptors with negligible eye motion artifacts due to an implemented 3D motion correction on a cellular level. This allows for an in vivo investigation of exactly the same location on the ...
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    9. Segmentation and quantification of retinal lesions in age-related macular degeneration using polarization-sensitive optical coherence tomography

      Segmentation and quantification of retinal lesions in age-related macular degeneration using polarization-sensitive optical coherence tomography
      ...ublished 12 November 2010 ABSTRACT REFERENCES (41) Bernhard Baumann, Erich Götzinger, Michael Pircher, and Harald Sattmann Medical University of Vienna, Center for Medical Physics and Biomedical Engineering, Währinger...
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    10. Imaging the human retina in vivo with combined spectral-domain polarization-sensitive optical coherence tomography and scanning laser ophthalmoscopy

      Polarization-sensitive (PS) optical coherence tomography (OCT) allows for depth-resolved measurement of light polarizing properties of different layers in the human retina. Since their inherent polarizing properties are different, the retinal structures can be identified using PS-OCT. We present an ... [Proc. SPIE 7163, 71630N (2009)] published Wed Feb 18, 2009.
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  2. About Harald Sattmann

    Harald Sattmann is a researcher at the Medical University of Vienna.