Dr. John A. Crowe Profile

Dr. John A. Crowe

Professor of Biomedical Engineering at Univ of Nottingham

SPIE Involvement:

Author

Publications (23)

SPIE Journal Paper | March 10, 2014

Light path-length distributions within the retina

Rodmell, Paul , Crowe, John , Gorman, Alistair , Harvey, Andrew , Muyo, Gonzalo , Mordant, David , McNaught, Andrew , Morgan, Stephen

JBO Vol. 19 Issue 03

KEYWORDS: Sensors, Monte Carlo methods, Photons, Retina, Oxygen, Eye, Scattering, Absorption, Light scattering, Imaging systems

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SPIE Journal Paper | March 6, 2012

Application of a maximum likelihood algorithm to ultrasound modulated optical tomography

Huynh, Nam Trung , He, Diwei , Hayes-Gill, Barrie , Crowe, John , Walker, John , Mather, Melissa , Rose, Felicity , Morgan, Stephen , Parker, Nicholas , Povey, Malcolm

JBO Vol. 17 Issue 02

KEYWORDS: Signal detection, Modulation, Acoustics, Scattering, Signal to noise ratio, Reconstruction algorithms, Data modeling, Tissue optics, Ultrasonography, Transducers

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SPIE Journal Paper | May 1, 2011

32×32 pixel array complementary metal-oxide semiconductor imaging sensor for laser Doppler blood-flow measurement

He, Diwei , Kongsavatsak, Chayut , Hayes-Gill, Barrie , Crowe, John , Morgan, Stephen

OE Vol. 50 Issue 05

KEYWORDS: Doppler effect, Sensors, Signal detection, Diffusers, Semiconductors, Signal processing, Calibration, Semiconductor lasers, Photodiodes, Digital signal processing

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PROCEEDINGS ARTICLE | February 22, 2011

Laser Doppler blood flow imaging with a 64x64 pixel full custom CMOS sensor

Proc. SPIE. 7891, Design and Quality for Biomedical Technologies IV

KEYWORDS: CMOS sensors, Digital signal processing, Doppler effect, Sensors, Image processing, Signal processing, Diffusers, Blood circulation, Signal detection, Filtering (signal processing)

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PROCEEDINGS ARTICLE | February 19, 2011

Characterization of tissue scaffolds using optics and ultrasound

Proc. SPIE. 7897, Optical Interactions with Tissue and Cells XXII

KEYWORDS: Foam, Modulation, Reflection, Scattering, Ultrasonography, Light scattering, Transducers, Optical tomography, Tissue optics, Acoustics

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PROCEEDINGS ARTICLE | February 18, 2011

Application of a maximum likelihood algorithm to ultrasound modulated optical tomography

Proc. SPIE. 7899, Photons Plus Ultrasound: Imaging and Sensing 2011

KEYWORDS: Data modeling, Modulation, Scattering, Sensors, Ultrasonography, Light scattering, Transducers, Optical tomography, Signal detection, Absorption

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PROCEEDINGS ARTICLE | July 8, 2009

Investigation of optimum wavelengths for oximetry

Proc. SPIE. 7368, Clinical and Biomedical Spectroscopy

KEYWORDS: Scattering, Signal attenuation, Error analysis, Light scattering, Interference (communication), Oxygen, Blood oxygen saturation, Mass attenuation coefficient, Oximetry, Absorption

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SPIE Journal Paper | May 1, 2009

Experimental and theoretical evaluation of rotating orthogonal polarization imaging

Zhu, Qun , Stockford, Ian , Crowe, John , Morgan, Stephen

JBO Vol. 14 Issue 03

KEYWORDS: Polarization, Scattering, Monte Carlo methods, Dichroic materials, Reflection, Tissues, Target detection, Natural surfaces, Tissue optics, Polarizers

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PROCEEDINGS ARTICLE | February 24, 2009

Raman spectroscopy and rotating orthogonal polarization imaging for non-destructive tracking of collagen deposition in tissue engineered skin and tendon

Proc. SPIE. 7179, Optics in Tissue Engineering and Regenerative Medicine III

KEYWORDS: Microscopes, Polarization, Tissues, Skin, Manufacturing, Collagen, Raman spectroscopy, Tissue optics, Product engineering, Optics manufacturing

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PROCEEDINGS ARTICLE | February 23, 2009

Full field laser Doppler flowmetry with custom made CMOS sensors

Proc. SPIE. 7170, Design and Quality for Biomedical Technologies II

KEYWORDS: CMOS sensors, Digital signal processing, Doppler effect, Imaging systems, Sensors, Image processing, Linear filtering, Signal processing, Diffusers, Blood circulation

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SPIE Journal Paper | October 1, 2008

Complementary metal-oxide-semiconductor imaging array with laser Doppler blood flow processing

Kongsavatsak, Chayut , He, Diwei , Hayes-Gill, Barrie , Crowe, John , Morgan, Steve

OE Vol. 47 Issue 10

KEYWORDS: Doppler effect, Blood circulation, Signal processing, Filtering (signal processing), Digital signal processing, Imaging arrays, Analog electronics, Modulation, Laser processing, Sensors

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PROCEEDINGS ARTICLE | February 6, 2008

Rotating orthogonal polarization imaging for tissue imaging

Proc. SPIE. 6858, Optics in Tissue Engineering and Regenerative Medicine II

KEYWORDS: Target detection, Linear polarizers, Polarization, Tissues, Reflection, Scattering, Polarizers, Monte Carlo methods, Dichroic materials, Natural surfaces

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PROCEEDINGS ARTICLE | October 27, 2006

Modelling and instrumentation for polarized light imaging and spectroscopy of scattering media

Proc. SPIE. 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine

KEYWORDS: Modeling, Polarization, Reflection, Scattering, Scattering media, Sensors, Light scattering, Imaging spectroscopy, Spectroscopes, Absorption

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PROCEEDINGS ARTICLE | July 21, 2006

Comparison of techniques for overcoming scattering in spectroscopy

Proc. SPIE. 6163, Saratov Fall Meeting 2005: Optical Technologies in Biophysics and Medicine VII

KEYWORDS: Signal to noise ratio, Polarization, Scattering, Spatial filters, Sensors, Signal attenuation, Spectroscopy, Photons, Light scattering, Absorption

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PROCEEDINGS ARTICLE | April 25, 2005

Ultrasound modulated optical tomography using a CMOS modulated light lock-in pixel

Proc. SPIE. 5697, Photons Plus Ultrasound: Imaging and Sensing 2005: The Sixth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics

KEYWORDS: CMOS sensors, Modulation, Cameras, Sensors, Ultrasonography, Amplifiers, Photodiodes, Linear filtering, Capacitance, Transistors

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PROCEEDINGS ARTICLE | July 29, 2004

Integrated optical sensors for optoacoustic imaging of tissue

Proc. SPIE. 5486, ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics

KEYWORDS: Optical sensors, Modulation, Sensors, Ultrasonography, Photodiodes, Linear filtering, Image sensors, Integrated optics, Tissue optics, Signal detection

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PROCEEDINGS ARTICLE | July 29, 2004

Laser Doppler blood flowmetry with FPGA processing

Proc. SPIE. 5486, ALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics

KEYWORDS: Optical filters, Modulation, Doppler effect, Blood, Laser processing, Photodiodes, Field programmable gate arrays, Linear filtering, Diffusers, Signal detection

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PROCEEDINGS ARTICLE | July 13, 2004

A polarized light imaging instrument for characterizing skin lesions

Proc. SPIE. 5326, Optical Biopsy V

KEYWORDS: Polarization, Tissues, Reflection, Scattering, Skin, Light scattering, Tissue optics, Natural surfaces, Dielectric polarization, Absorption

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PROCEEDINGS ARTICLE | May 18, 1999

Wireless monitoring of highways

Proc. SPIE. 3671, Smart Structures and Materials 1999: Smart Systems for Bridges, Structures, and Highways

KEYWORDS: Transmitters, Silicon, Receivers, Control systems, Computer programming, Signal processing, Microcontrollers, Error control coding, Binary data, Temperature metrology

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PROCEEDINGS ARTICLE | December 30, 1998

Measurement of in-vivo hemoglobin concentration using diffuse reflectance

Proc. SPIE. 3566, Photon Propagation in Tissues IV

KEYWORDS: Diffuse reflectance spectroscopy, Optical properties, Tissues, Scattering, Sensors, Error analysis, Monte Carlo methods, Picosecond phenomena, In vivo imaging, Absorption

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PROCEEDINGS ARTICLE | February 1, 1994

Experimental study of continuous wave coherent techniques for optical transillumination

Proc. SPIE. 2082, Quantification and Localization Using Diffuse Photons in a Highly Scattering Medium

KEYWORDS: Confocal microscopy, Imaging systems, Scattering, Scattering media, Sensors, Light scattering, Laser scattering, Heterodyning, Spatial resolution

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PROCEEDINGS ARTICLE | March 2, 1993

Dual-template optical correlator with interferometric detection for improved discrimination

Proc. SPIE. 1732, Holographics International '92

KEYWORDS: Signal to noise ratio, Optical filters, Holograms, Holography, Spatial filters, Silicon, Interferometry, Signal processing, Optical correlators, Phase shifts

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PROCEEDINGS ARTICLE | August 1, 1992

Dual template optical correlator for pattern recognition

Proc. SPIE. 1647, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine II

KEYWORDS: Signal to noise ratio, Mirrors, Beam splitters, Holograms, Breast cancer, Interference (communication), Signal processing, Electronic filtering, Optical pattern recognition, Optical correlators

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Showing 5 of 23 publications

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