11 March 2015 A real-time ultrasonic field mapping system using a Fabry Pérot single pixel camera for 3D photoacoustic imaging
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Abstract
A system for dynamic mapping of broadband ultrasound fields has been designed, with high frame rate photoacoustic imaging in mind. A Fabry-Pérot interferometric ultrasound sensor was interrogated using a coherent light single-pixel camera. Scrambled Hadamard measurement patterns were used to sample the acoustic field at the sensor, and either a fast Hadamard transform or a compressed sensing reconstruction algorithm were used to recover the acoustic pressure data. Frame rates of 80 Hz were achieved for 32x32 images even though no specialist hardware was used for the on-the-fly reconstructions. The ability of the system to obtain photocacoustic images with data compressions as low as 10% was also demonstrated.
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Nam Huynh, Nam Huynh, Edward Zhang, Edward Zhang, Marta Betcke, Marta Betcke, Simon R. Arridge, Simon R. Arridge, Paul Beard, Paul Beard, Ben Cox, Ben Cox, } "A real-time ultrasonic field mapping system using a Fabry Pérot single pixel camera for 3D photoacoustic imaging", Proc. SPIE 9323, Photons Plus Ultrasound: Imaging and Sensing 2015, 93231O (11 March 2015); doi: 10.1117/12.2081869; https://doi.org/10.1117/12.2081869
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