Dr. Roy A. Stillwell Profile

Dr. Roy A. Stillwell

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Publications (5)

Proceedings Article | 13 March 2024 Presentation

Demonstration of an entirely handheld real-time frequency-domain near-infrared spectroscopy imaging system

Roy Stillwell, Adam Longoria, Eric Sheeder, Karla Gonzalez, Nicholas Ross, Thomas O'Sullivan

Proceedings Volume PC12827, PC128270A (2024) https://doi.org/10.1117/12.3003850

KEYWORDS: Optical properties, Near infrared spectroscopy, Imaging systems, Laser frequency, Tissues, Data acquisition, Tumors, Tissue optics, Tablets, System on a chip

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Proceedings Article | 7 March 2022 Poster + Paper

Optically-enhanced wireless breast lesion localization device for use during lumpectomy

Sunghoon Rho, Roy Stillwell, Patrick Fay, Kandice Ludwig, Thomas O'Sullivan

Proceedings Volume 11949, 119490F (2022) https://doi.org/10.1117/12.2606061

KEYWORDS: Light emitting diodes, Breast, Tissue optics, Antennas, Surgery, Visualization, Signal attenuation, Absorption

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Proceedings Article | 7 March 2022 Presentation

A real-time fully handheld frequency domain near infrared spectroscopy imaging system

Roy Stillwell, Thomas O'Sullivan

Proceedings Volume PC11944, PC119440D (2022) https://doi.org/10.1117/12.2608254

KEYWORDS: Near infrared spectroscopy, Imaging systems, Sensors, Optical properties, Tissue optics, Spatial resolution, Silicon photomultipliers, Point-of-care devices, Optical tracking, Optical sensors

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Proceedings Article | 9 December 2021 Paper

High-speed 2D imaging with frequency-domain near-infrared spectroscopy

Roy Stillwell, Thomas O'Sullivan

Proceedings Volume 11920, 119200A (2021) https://doi.org/10.1117/12.2615212

KEYWORDS: Tumors, Data acquisition, Optical properties, Near infrared spectroscopy, Chromophores, Tissues, System on a chip, Modulation, Imaging systems, Vertical cavity surface emitting lasers

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Proceedings Article | 1 March 2019 Paper

Toward handheld real time frequency domain diffuse optical spectroscopy

Vincent Kitsmiller, Roy Stillwell, Thomas O'Sullivan

Proceedings Volume 10874, 1087405 (2019) https://doi.org/10.1117/12.2508911

KEYWORDS: Optical properties, Chromophores, Modulation, Tissue optics, Field programmable gate arrays, Sensors, Absorption, Imaging systems, Scattering, Signal attenuation

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