Ms. Barbara K. McQuiston Profile

Barbara K. McQuiston

Deputy Director, Defense Sciences Office at DARPA

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Publications (7)

Proceedings Article | 31 May 2005 Paper

Laboratory and field performance of a megapixel QWIP focal plane array

Arnold Goldberg, Eric Cho, Barbara McQuiston

Proceedings Volume 5783, (2005) https://doi.org/10.1117/12.601863

KEYWORDS: Staring arrays, Quantum well infrared photodetectors, Sensors, Infrared imaging, Forward looking infrared, Spatial frequencies, Long wavelength infrared, Readout integrated circuits, Black bodies, Target detection

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Proceedings Article | 6 December 2004 Paper

QWIP chip dual-color and multicolor FPAs for military applications

Barbara McQuiston, Eric Cho, Wah Lim, Sir Rafol, Sarath Gunapala, Sumith Bandara, John Liu

Proceedings Volume 5612, (2004) https://doi.org/10.1117/12.579456

KEYWORDS: Quantum well infrared photodetectors, Sensors, Staring arrays, Long wavelength infrared, Gallium arsenide, Infrared radiation, Land mines, Readout integrated circuits, Infrared imaging, Particles

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Proceedings Article | 10 October 2003 Paper

Development of a visible-NIR/LWIR QWIP sensor

Eric Cho, Barbara McQuiston, Wah Lim, Sir Rafol, Cynthia Hanson, Richard Nguyen, Andy Hutchinson

Proceedings Volume 5074, (2003) https://doi.org/10.1117/12.497512

KEYWORDS: Long wavelength infrared, Quantum well infrared photodetectors, Gallium arsenide, PIN photodiodes, Staring arrays, Visible radiation, Sensors, Readout integrated circuits, Infrared radiation, Defense technologies

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Proceedings Article | 10 October 2003 Paper

Development of a QWIP dual-color FPA for mine detection applications

Eric Cho, Barbara McQuiston, Wah Lim, Sarath Gunapala, John O'Neill, Andy Hutchinson

Proceedings Volume 5074, (2003) https://doi.org/10.1117/12.497511

KEYWORDS: Quantum well infrared photodetectors, Sensors, Land mines, Staring arrays, Long wavelength infrared, Particles, Gallium arsenide, Infrared imaging, Infrared radiation, Readout integrated circuits

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Proceedings Article | 10 October 2001 Paper

QWIP technology for both military and civilian applications

Sarath Gunapala, Carl Kukkonen, Mark Sirangelo, Barbara McQuiston, Riad Chehayeb, M. Kaufmann

Proceedings Volume 4369, (2001) https://doi.org/10.1117/12.445311

KEYWORDS: Quantum well infrared photodetectors, Staring arrays, Sensors, Long wavelength infrared, Gallium arsenide, Cameras, Imaging systems, Roads, Defense technologies, Thermography

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Proceedings Article | 21 March 1997 Paper

Three-dimensional anthropometric techniques applied to the fabrication of burn masks and the quantification of wound healing

Jennifer Whitestone, Glen Geisen, Barbara McQuiston

Proceedings Volume 3023, (1997) https://doi.org/10.1117/12.269764

KEYWORDS: Wound healing, Tissues, Data modeling, Natural surfaces, Image segmentation, Human-machine interfaces, Oxygen, Systems modeling, Statistical analysis, Medicine

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Proceedings Article | 8 April 1996 Paper

Quantifying wound morphology and tissue energetics for diagnosis and treatment of chronic wounds

Barbara McQuiston, Martin Stytz, Jennifer Whitestone, Richard Henderson

Proceedings Volume 2709, (1996) https://doi.org/10.1117/12.237891

KEYWORDS: Tissues, Wound healing, Magnetism, Natural surfaces, Magnetic resonance imaging, Oxygen, 3D scanning, Laser scanners, Collagen, Mode conditioning cables

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The care and efficacy of treatment for chronic wounds is typically determined by observing and measuring the wound's response to a given treatment protocol. The traditional measures of wound morphology typically include photographs taken over time, alginates for determining wound volume, and rulers or concentric circles to estimate a wound's diameter. Although the traditional wound morphology measures are generally non-invasive, they are subjective and non-repeatable. Information on tissue response is generally limited to gross metabolic measurements acquired through standard diagnostic testing, bacteriological information from biopsied material and transcutaneous oximetry taken at the periphery of the wound. Information related to tissue response is generally acquired using invasive techniques. This paper describes a non-invasive method for assessing wound morphology and response being used to assess and study chronic wounds at the USAF Medical Center at Wright-Patterson AFB. This new technique exploits the properties of laser surface scanning and magnetic resonance spectroscopy to acquire its measurements. The method used employs a Cyberware^TM laser surface scanner to capture both range and color information from the patient's wound surface. The color and range data are then registered to 1 mm accuracy for visualization of the patient's surface. The Magnetic Resonance Spectroscopy (MRS) data are then captured for the same wound using a surface localization and spectra collection protocol. The MRS data includes phosphorous MRS as an indicator of cellular energy balance. Spatial registration is used to combine the Cyberware and MRS datasets. The resulting data are then presented as a 3D volume with additional parameters, such as surface area, volume, and perimeter, portrayed for the total wound and specific tissue types. Results to date for our approach include the development of an automatic feature extraction algorithm that recognizes and extracts a wound edge from the laser surface scanner data. Additional tissue type characteristics, such as granulation, epithelialization, etc., are also identified by the feature extraction algorithm. The overall goal of this research is to provide a non-invasive, reliable method for wound quantification. Numerous patients with chronic wounds (i.e., diabetic ulcers, radiation wounds, etc.) require methods such as this for determining efficacy of wound treatments. These treatments often range from growth factors therapy to hyperbaric treatment for wound care. The results of this research will provide a technique for measuring some of the underlying biochemical mechanisms of wound healing in humans.

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