A
Abhishek Kumar
Researcher at Medical University of Vienna
Publications - 18
Citations - 977
Abhishek Kumar is an academic researcher from Medical University of Vienna. The author has contributed to research in topics: Optical coherence tomography & Adaptive optics. The author has an hindex of 11, co-authored 18 publications receiving 823 citations. Previous affiliations of Abhishek Kumar include University of Rochester & Carl Zeiss AG.
Papers
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Optical coherence tomography today: speed, contrast, and multimodality.
Wolfgang Drexler,Mengyang Liu,Abhishek Kumar,Tschackad Kamali,Angelika Unterhuber,Rainer A. Leitgeb +5 more
TL;DR: Various multimodal imaging modalities with OCT incorporated are reviewed, in that these multi-modal implementations can synergistically compensate for the fundamental limitations of OCT when it is used alone.
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High-resolution synthetic-aperture digital holography with digital phase and pupil correction.
TL;DR: A 218 mega-pixel synthetic aperture was collected by raster scanning a CCD detector in a digital holography imaging experiment using a two-step cross-correlation registration to achieve diffraction-limited resolution.
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Subaperture correlation based digital adaptive optics for full field optical coherence tomography
TL;DR: A sub-aperture correlation based numerical phase correction method for interferometric full field imaging systems provided the complex object field information can be extracted without the need of any adaptive optics, spatial light modulators (SLM) and additional cameras.
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Noniterative digital aberration correction for cellular resolution retinal optical coherence tomography in vivo
Laurin Ginner,Abhishek Kumar,Daniel Fechtig,Lara M. Wurster,Matthias Salas,Michael Pircher,Rainer A. Leitgeb +6 more
TL;DR: In this paper, a noniterative digital aberration correction (DAC) was proposed to achieve aberration-free cellular-level resolution in OCT images of the human retina in vivo.
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Visualization of micro-capillaries using optical coherence tomography angiography with and without adaptive optics.
Matthias Salas,Marco Augustin,Laurin Ginner,Abhishek Kumar,Bernhard Baumann,Rainer A. Leitgeb,Wolfgang Drexler,Sonja Prager,Julia Hafner,Ursula Schmidt-Erfurth,Michael Pircher +10 more
TL;DR: The improved transverse resolution and the reduced depth of focus of AO-OCT and AO -OCTA greatly reduce shadowing artifacts allowing for a better differentiation and segmentation of different vasculature layers of the inner retina.