Dr. Pinhas Ephrat Profile

Dr. Pinhas Ephrat

Ph. D. Candidate at Visualsonics Inc

SPIE Involvement:

Author

Area of Expertise:

Photoacoustic Imaging , Medical Imaging , Lasers , Applied Physics , Optics Instrumentation

• 8 years experience in project management and R&D of electro-optical systems
• Ph.D. in Medical Biophysics, with specialization in medical imaging using Photo-Acoustics
• Won highest-ranked Canadian government doctorate scholarship for 3 years (NSERC CGS-D3)
• Authored 5 peer-reviewed and 5 conference proceeding papers + 1 patent
• Managed $2M project building satellite calibration equipment for the European Space Agency
• Researched and developed novel photonic products for the telecommunication industry
• Developed defence-oriented surveillance and reconnaissance electro-optical systems
• Excellent presentation and communication skills
• Strong analytical and planning skills

Proceedings Article | 19 February 2011 Paper

Development and validation of a combined photoacoustic micro-ultrasound system for in vivo oxygen saturation estimation

A. Needles, A. Heinmiller, P. Ephrat, D. Bates, C. Bilan-Tracey, C. Theodoropoulos, D. Hirson, F. Foster

Proceedings Volume 7899, 78992D (2011) https://doi.org/10.1117/12.875846

KEYWORDS: Oxygen, Ischemia, Blood, Imaging systems, In vivo imaging, Photoacoustic spectroscopy, Ultrasonography, Tissues, Veins, 3D image processing

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Proceedings Article | 24 February 2010 Paper

Analysis of a photoacoustic imaging system by singular value decomposition

Michael Roumeliotis, Govind Chaudhary, Mark Anastasio, Robert Stodilka, Andrea Immucci, Eldon Ng, Jeffrey J. Carson

Proceedings Volume 7564, 756432 (2010) https://doi.org/10.1117/12.842306

KEYWORDS: Imaging systems, Transducers, Photoacoustic imaging, Calibration, Data acquisition, Acoustics, Photoacoustic spectroscopy, Pulsed laser operation, Optical imaging, Computer programming

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Proceedings Article | 24 February 2010 Paper

Characterization of sparse-array detection photoacoustic tomography using the singular value decomposition

G. Chaudhary, M. Roumeliotis, P. Ephrat, R. Stodilka, J. J. Carson, M. Anastasio

Proceedings Volume 7564, 756438 (2010) https://doi.org/10.1117/12.842663

KEYWORDS: Transducers, Acquisition tracking and pointing, Imaging systems, Photoacoustic tomography, Computing systems, Matrices, Sensors, Chemical elements, Ultrasonics, Tissue optics

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Proceedings Article | 25 February 2009 Paper

3D photoacoustic imaging of a moving target

Pinhas Ephrat, Michael Roumeliotis, Frank Prato, Jeffrey J. Carson

Proceedings Volume 7177, 71770W (2009) https://doi.org/10.1117/12.807878

KEYWORDS: Sensors, Imaging systems, 3D image processing, 3D acquisition, Photoacoustic imaging, Image restoration, Blood vessels, Hyperspectral systems, Velocity measurements, Absorption

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Proceedings Article | 25 February 2009 Paper

Development of an omni-directional photoacoustic source for the characterization of a hemispherical sparse detector array

Michael Roumeliotis, Pinhas Ephrat, Jeffrey J. Carson

Proceedings Volume 7177, 71772F (2009) https://doi.org/10.1117/12.809072

KEYWORDS: Sensors, Signal detection, Photoacoustic spectroscopy, Calibration, Acoustics, Imaging systems, Detector arrays, Photoacoustic imaging, Reconstruction algorithms, Coating

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SPIE Journal Paper | 1 September 2008 Open Access

Three-dimensional photoacoustic imaging by sparse-array detection and iterative image reconstruction

Pinhas Ephrat, Lynn Keenlislide, Adam Seabrook, Frank Prato, Jeffrey Carson

JBO, Vol. 13, Issue 05, 054052, (September 2008) https://doi.org/10.1117/12.10.1117/1.2992131

KEYWORDS: Sensors, 3D image processing, Signal detection, Detector arrays, Reconstruction algorithms, Photoacoustic imaging, Imaging systems, Image restoration, 3D acquisition, Detection and tracking algorithms

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Proceedings Article | 28 February 2008 Paper

Measurement of photoacoustic transducer position by robotic source placement and nonlinear parameter estimation

Jeffrey Carson, Pinhas Ephrat, Adam Seabrook

Proceedings Volume 6856, 68561Z (2008) https://doi.org/10.1117/12.763769

KEYWORDS: Transducers, Photoacoustic spectroscopy, Distance measurement, Chemical elements, Data acquisition, Pulsed laser operation, Robotics, Photoacoustic imaging, Source localization, Calibration

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Proceedings Article | 28 February 2008 Paper

Synthesis and in vitro cytotoxicity of mPEG-SH modified gold nanorods

Candice Didychuk, Pinhas Ephrat, Michelle Belton, Jeffrey J. Carson

Proceedings Volume 6856, 68560M (2008) https://doi.org/10.1117/12.763765

KEYWORDS: Gold, Transmission electron microscopy, Absorption, Near infrared, Biomedical optics, Absorbance, In vitro testing, Optical properties, In vivo imaging, Nanorods

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Proceedings Article | 28 February 2008 Paper

Measurement of photoacoustic detector sensitivity distribution by robotic source placement

Pinhas Ephrat, Jeffrey J. Carson

Proceedings Volume 6856, 685610 (2008) https://doi.org/10.1117/12.763825

KEYWORDS: Transducers, Photoacoustic spectroscopy, Reconstruction algorithms, Acoustics, Sensors, Image restoration, Signal attenuation, Photoacoustic imaging, Fiber coatings, Detection and tracking algorithms

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Proceedings Article | 9 July 2004 Paper

AgClBr photonic crystal fibers for the middle infrared

Eran Rave, Pinhas Ephrat, Abraham Katzir

Proceedings Volume 5360, (2004) https://doi.org/10.1117/12.527906

KEYWORDS: Optical fibers, Silver, Thermography, Fiber optics, Photonic crystal fibers, Infrared radiation, Signal attenuation, Refractive index, Mid-IR, Sensors

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