Dr. Ragnar Olafsson Profile

Dr. Ragnar Olafsson

at Univ of Arizona

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Author

Publications (9)

SPIE Journal Paper | 1 February 2011 Open Access

3-D photoacoustic and pulse echo imaging of prostate tumor progression in the mouse window

Daniel Bauer, Ragnar Olafsson, Leonardo Montilla, Russell Witte

JBO, Vol. 16, Issue 02, 026012, (February 2011) https://doi.org/10.1117/12.10.1117/1.3540668

KEYWORDS: Tumors, Skin, Tissue optics, Photoacoustic spectroscopy, Cancer, Blood vessels, 3D image processing, Prostate, Photography, Imaging systems

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Proceedings Article | 12 March 2010 Paper

Fabrication and characterization of an indium tin oxide acoustoelectric hydrophone

Pier Ingram, Charles Greenlee, Zhaohui Wang, Ragnar Olafsson, Robert Norwood, Russell Witte

Proceedings Volume 7629, 76290O (2010) https://doi.org/10.1117/12.845631

KEYWORDS: Transducers, Gold, Electrodes, Ultrasonography, Acoustics, Sensors, Indium, Tin, Oxides, Imaging arrays

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Proceedings Article | 12 March 2010 Paper

Detection of multiple electrical sources in tissue using ultrasound current source density imaging

Zhaohui Wang, Pier Ingram, Ragnar Olafsson, Qian Li, Russell Witte

Proceedings Volume 7629, 76290H (2010) https://doi.org/10.1117/12.844657

KEYWORDS: Tissues, Ultrasonography, Signal detection, Transducers, Bridges, 3D image processing, Acoustics, Spatial resolution, Electrodes, Natural surfaces

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Proceedings Article | 12 March 2010 Paper

Simulation-based optimization of the acoustoelectric hydrophone for mapping an ultrasound beam

Zhaohui Wang, Pier Ingram, Ragnar Olafsson, Charles Greenlee, Robert Norwood, Russell Witte

Proceedings Volume 7629, 76290Q (2010) https://doi.org/10.1117/12.844651

KEYWORDS: Ultrasonography, Transducers, Optical simulations, Signal to noise ratio, Gold, Signal detection, Fourier transforms, Acoustics, Electrodes, Interference (communication)

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Proceedings Article | 24 February 2010 Paper

In vivo multi-modality photoacoustic and pulse echo tracking of prostate tumor growth using a window chamber

Daniel Bauer, Ragnar Olafsson, Leonardo Montilla, Russell Witte

Proceedings Volume 7564, 75643B (2010) https://doi.org/10.1117/12.843875

KEYWORDS: Tumors, Skin, Photoacoustic spectroscopy, Green fluorescent protein, Tissue optics, Cancer, Imaging systems, Ultrasonography, Tissues, Transducers

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Proceedings Article | 23 February 2010 Paper

Real-time pulse echo and photoacoustic imaging using an ultrasound array and in-line reflective illumination

Leonardo Montilla, Ragnar Olafsson, Russell Witte

Proceedings Volume 7564, 75643C (2010) https://doi.org/10.1117/12.843877

KEYWORDS: Reflectors, Ultrasonography, Transducers, Acoustics, Prisms, Imaging systems, Transparency, Photoacoustic spectroscopy, Breast cancer, Tissues

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Proceedings Article | 25 February 2009 Paper

Tracking contrast agents using real-time 2D photoacoustic imaging system for cardiac applications

Ragnar Olafsson, Leonardo Montilla, Pier Ingram, Russell Witte

Proceedings Volume 7177, 71771R (2009) https://doi.org/10.1117/12.811060

KEYWORDS: Heart, Imaging systems, Photoacoustic spectroscopy, Ultrasonography, Scanners, Photoacoustic imaging, Data acquisition, Ultrasonics, Spatial resolution, Laser scanners

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Proceedings Article | 12 March 2007 Paper

Measurement of a 2D electric dipole field using the acousto-electric effect

Ragnar Olafsson, Russell Witte, Matthew O'Donnell

Proceedings Volume 6513, 65130S (2007) https://doi.org/10.1117/12.712448

KEYWORDS: Electrodes, Lead, Ultrasonography, Transducers, Spatial resolution, Acoustics, Electrocardiography, Amplifiers, Heart, Raster graphics

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Proceedings Article | 16 March 2006 Paper

Electric current mapping using the acousto-electric effect

Ragnar Olafsson, Russell Witte, Kang Kim, Shai Ashkenazi, Matthew O'Donnell

Proceedings Volume 6147, 61470O (2006) https://doi.org/10.1117/12.655755

KEYWORDS: Electrodes, Ultrasonography, Heart, Signal generators, Electrocardiography, Transducers, Spatial resolution, Modulation, Field programmable gate arrays, Solids

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Showing 5 of 9 publications

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