Dr. Evan R. Hirst Profile

Dr. Evan R. Hirst

Senior Research Scientist at Callaghan Innovation

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Publications (6)

SPIE Journal Paper | 27 June 2013 Open Access

Laser speckle contrast imaging: theoretical and practical limitations

David Briers, Donald Duncan, Evan Hirst, Sean Kirkpatrick, Marcus Larsson, Wiendelt Steenbergen, Tomas Stromberg, Oliver Thompson

JBO, Vol. 18, Issue 06, 066018, (June 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.6.066018

KEYWORDS: Speckle, Laser speckle contrast imaging, Doppler effect, Speckle pattern, Photography, Blood, Blood circulation, Calibration, Velocity measurements, Light scattering

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Proceedings Article | 1 March 2013 Paper

Effective frequency sensitivity of laser speckle contrast measurements

O. Thompson, E. Hirst, M. Andrews

Proceedings Volume 8580, 858008 (2013) https://doi.org/10.1117/12.2005312

KEYWORDS: Speckle, Cameras, Doppler effect, Speckle pattern, Content addressable memory, Time metrology, Neodymium, Capillaries, Tissues, Ions

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Proceedings Article | 1 March 2013 Paper

Measurement of dynamic scattering beneath stationary layers using multiple-exposure laser speckle contrast analysis

Evan Hirst, Oliver Thompson, Mike Andrews

Proceedings Volume 8580, 858007 (2013) https://doi.org/10.1117/12.2005266

KEYWORDS: Speckle, Laser scattering, Speckle pattern, Tissues, Cameras, Scattering, Retina, Image processing, Imaging systems, Neodymium

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Proceedings Article | 16 February 2012 Paper

Multi-exposure laser speckle perfusion imaging for retinal blood flow

Evan Hirst, Mike Andrews, Oliver Thompson

Proceedings Volume 8222, 822205 (2012) https://doi.org/10.1117/12.907619

KEYWORDS: Speckle, Capillaries, Retina, Blood, Cameras, Scattering, Speckle pattern, Blood circulation, Retinal scanning, Speckle imaging

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Proceedings Article | 11 February 2011 Paper

Measurement of directed blood flow by laser speckle

Evan Hirst, Oliver Thompson, Michael Andrews

Proceedings Volume 7898, 78980D (2011) https://doi.org/10.1117/12.873664

KEYWORDS: Speckle, Eye, Skin, Blood, Retina, Cameras, Blood circulation, Tissues, Motion measurement, Light scattering

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Proceedings Article | 11 February 2011 Paper

Is there a difference between laser speckle and laser Doppler in depth sensitivity?

O. Thompson, E. Hirst, M. Andrews

Proceedings Volume 7898, 78980E (2011) https://doi.org/10.1117/12.874265

KEYWORDS: Speckle, Doppler effect, Imaging systems, Tissues, Cameras, Tissue optics, Sensors, Laser systems engineering, Scattering, Laser tissue interaction

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Showing 5 of 6 publications

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