Dr. Andreas Wartak Profile

Dr. Andreas Wartak

Postdoctoral Research Fellow at Harvard Medical School

SPIE Involvement:

Author | Career Lab Leader

Publications (17)

Proceedings Article | 13 March 2024 Presentation

Detecting Barrett’s esophagus using a methylene blue fluorescent slurry and a multi-modal optical coherence tomography and fluorescence capsule

Andrew Thrapp, Evaggelia Gavgiotakis, Joseph Gardecki, Andreas Wartak, Catriona Grant, Guillermo Tearney

Proceedings Volume PC12820, PC1282006 (2024) https://doi.org/10.1117/12.3008546

KEYWORDS: Fluorescence, Optical coherence tomography, Esophagus, Endomicroscopy, Tissues, Target detection, Stomach, In vitro testing, Fluorescence spectroscopy, Endoscopy

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Proceedings Article | 7 March 2022 Presentation

Extended depth of field in OCT by self-imaging wavefront division with the mirror tunnel

Conor Sheil, Andreas Wartak, Graham L. Spicer, Guillermo Tearney

Proceedings Volume PC11937, PC1193704 (2022) https://doi.org/10.1117/12.2609900

KEYWORDS: Mirrors, Optical coherence tomography, Focus stacking, Wavefronts, Image resolution, Space operations, Space mirrors, Optical simulations, Endoscopy, Beam propagation method

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Proceedings Article | 7 March 2022 Presentation

Characterizing subepithelial remodeling in eosinophilic esophagitis with PS-μOCT

Conor Sheil, Andreas Wartak, Joseph Gardecki, Abigail Gregg, Guillermo Tearney

Proceedings Volume PC11937, PC119370J (2022) https://doi.org/10.1117/12.2609948

KEYWORDS: Esophagus, Collagen, Endoscopy, Biopsy, Visualization, Tomography, Tissues, Statistical modeling, Optical coherence tomography, Microscopy

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Proceedings Article | 5 March 2021 Presentation

Multimodality optical coherence tomography based tethered capsule endomicroscopy for upper gastrointestinal tract imaging

Andreas Wartak, Yuxiao Wei, Ara Bablouzian, Paola Leon Alarcon, Keval Bollavaram, Osman Ahsen, Edward Farewell, Schuyler VanTol, Alfred Kelada, Abigail Gregg, Aaron Baillargeon, Patricia Grahmann, Joseph Gardecki, Guillermo Tearney

Proceedings Volume 11630, 116300P (2021) https://doi.org/10.1117/12.2582536

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Proceedings Article | 5 March 2021 Presentation

Development of a clinical intravascular dual-modality optical coherence tomography and near-infrared autofluorescence/fluorescence imaging platform

Osman Ahsen, Zhonglie Piao, Aditya Kumar, Ara Bablouzian, Jia Liu, Mason Schellenberg, Paola Leon Alarcon, Andreas Wartak, Matthew Beatty, Benjamin Child, Adam Mauskapf, Mazen Albaghdadi, Ryutaro Ikegami, Sarah Giddings, Joseph Gardecki, Victoria Mathieu, Farouc Jaffer, Guillermo Tearney

Proceedings Volume 11621, 116210O (2021) https://doi.org/10.1117/12.2577841

KEYWORDS: Optical coherence tomography, Luminescence, Imaging systems, Tissues, Process control, Near infrared, Visualization, Standards development, Lens design, Control systems

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Proceedings Article | 13 March 2019 Presentation

Doppler optical coherence tomography for investigation of spontaneous retinal venous pulsation (Conference Presentation)

Andreas Wartak, Florian Beer, Sylvia Desissaire, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

Proceedings Volume 10858, 1085805 (2019) https://doi.org/10.1117/12.2507869

KEYWORDS: Optical coherence tomography, Doppler tomography, Coherence imaging, Veins, Optic nerve, Head, Prototyping, Scanning laser ophthalmoscopy, Tomography, Image acquisition

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Proceedings Article | 11 March 2019 Open Access

Angle independent Doppler flow calculation with line field OCT based on digital subapertures (Conference Presentation) (Withdrawal Notice)

Laurin Ginner, Andreas Wartak, Matthias Salas, Marco Augustin, Anton Grebenyuk, Michael Niederleithner, Lara Wurster, Fabian Placzek, Rainer Leitgeb

Proceedings Volume 10867, 1086710 (2019) https://doi.org/10.1117/12.2508428

KEYWORDS: Optical coherence tomography, Doppler effect, In vivo imaging, Retinal scanning

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Proceedings Article | 4 March 2019 Presentation

OCT imaging along retinal vessels using arbitrary scanning patterns (Conference Presentation)

Sylvia Desissaire, Andreas Wartak, Florian Beer, Matthias Salas, Mitsuro Sugita, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

Proceedings Volume 10867, 108671B (2019) https://doi.org/10.1117/12.2511117

KEYWORDS: Optical coherence tomography, Retinal scanning, Imaging systems, Blood circulation, Doppler effect, Diagnostics, Optical scanning systems, Optic nerve, Head, Raster graphics

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SPIE Journal Paper | 30 August 2018 Open Access

Polarization-sensitive optical coherence tomography imaging of the anterior mouse eye

Bernhard Baumann, Marco Augustin, Antonia Lichtenegger, Danielle Harper, Martina Muck, Pablo Eugui, Andreas Wartak, Michael Pircher, Christoph Hitzenberger

JBO, Vol. 23, Issue 08, 086005, (August 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.8.086005

KEYWORDS: Eye, Polarization, Optical coherence tomography, Cornea, Coherence imaging, Image segmentation, Iris, Tissues, Reflectivity, Signal to noise ratio

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SPIE Journal Paper | 13 June 2018 Open Access

Endoscopic optical coherence tomography with a flexible fiber bundle

Lara M. Wurster, Laurin Ginner, Abhishek Kumar, Matthias Salas, Andreas Wartak, Rainer Leitgeb

JBO, Vol. 23, Issue 06, 066001, (June 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.6.066001

KEYWORDS: Optical coherence tomography, Endoscopy, Endoscopes, Signal detection, In vivo imaging, Mirrors, GRIN lenses, Tissues, Image quality, Imaging systems

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SPIE Journal Paper | 24 May 2018 Open Access

Adaptable switching schemes for time-encoded multichannel optical coherence tomography

Andreas Wartak, Florian Beer, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

JBO, Vol. 23, Issue 05, 056010, (May 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.5.056010

KEYWORDS: Switching, Optical coherence tomography, Doppler tomography, Velocity measurements, Switches, In vivo imaging, Optical switching, In vitro testing, Mirrors, Computer programming

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Proceedings Article | 14 March 2018 Presentation

Large field of view adaptive optics scanning laser ophthalmoscopy and optical coherence tomography (Conference Presentation)

Marie Laslandes, Matthias Salas, Andreas Wartak, Christoph Hitzenberger, Michael Pircher

Proceedings Volume 10474, 104740H (2018) https://doi.org/10.1117/12.2287120

KEYWORDS: Adaptive optics, Scanning laser ophthalmoscopy, Retinal scanning, Eye, Retina, Scanning laser ophthalmoscopes, Deformable mirrors, Wavefront sensors, Sensors, In vivo imaging

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Proceedings Article | 1 August 2017 Paper

Sequential multi-channel OCT in the retina using high-speed fiber optic switches

Andreas Wartak, Marco Augustin, Florian Beer, Richard Haindl, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

Proceedings Volume 10416, 1041607 (2017) https://doi.org/10.1117/12.2286075

KEYWORDS: Optical coherence tomography, Retina, Fiber optics, Optical switching, Ophthalmology, Retinal scanning, Scattering, Doppler tomography

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Proceedings Article | 1 August 2017 Paper

Few-mode fiber detection for tissue characterization in optical coherence tomography

Pablo Eugui , Antonia Lichtenegger, Marco Augustin, Danielle Harper, Stanislava Fialová, Andreas Wartak, Christoph Hitzenberger, Bernhard Baumann

Proceedings Volume 10416, 104160M (2017) https://doi.org/10.1117/12.2287667

KEYWORDS: Optical coherence tomography, Imaging systems, Tissue optics, Fiber optics, Neuroimaging, Brain, Alzheimer's disease, Scattering

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Proceedings Article | 26 April 2016 Presentation

Phase sensitive adaptive optics assisted SLO/OCT for retinal imaging (Conference Presentation)

Michael Pircher, Franz Felberer, Matthias Salas, Richard Haindl, Bernhard Baumann, Andreas Wartak, Christoph Hitzenberger

Proceedings Volume 9697, 96970U (2016) https://doi.org/10.1117/12.2210923

KEYWORDS: Adaptive optics, Optical coherence tomography, Retinal scanning, Cones, Retina, Interferometers, Phase measurement, Visualization, Rods, In vivo imaging

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Proceedings Article | 8 March 2016 Paper

Depth encoded three-beam swept source Doppler optical coherence tomography

Andreas Wartak, Richard Haindl, Wolfgang Trasischker, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

Proceedings Volume 9697, 96970K (2016) https://doi.org/10.1117/12.2214471

KEYWORDS: Optical coherence tomography, Doppler tomography, Blood circulation, In vitro testing, Motion measurement, Computer programming, In vivo imaging, Laser sources, Single mode fibers, Mach-Zehnder interferometers, Beam splitters, Collimators, Velocity measurements, 3D metrology, Capillaries

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Proceedings Article | 4 March 2016 Paper

Total retinal blood flow and reproducibility evaluation by three beam optical Doppler tomography

Richard Haindl, Wolfgang Trasischker, Andreas Wartak, Bernhard Baumann, Michael Pircher, Christoph Hitzenberger

Proceedings Volume 9693, 969302 (2016) https://doi.org/10.1117/12.2210910

KEYWORDS: Biomedical optics and medical imaging, Functional imaging, Blood circulation, Doppler tomography, Velocity measurements, Biomedical optics, Biotechnology, Retina, Optical coherence tomography, Imaging systems, Optic nerve, Arteries, Veins, Collimators, Spectrometers, Telescopes

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Showing 5 of 17 publications

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