3D photoacoustic imaging using Hadamard-bias encoding with a crossed electrode relaxor array
| Autor: | Katherine Latham, Jeremy Brown, Chris Ceroici, Roger J. Zemp, Ryan Chee, Ben Greenlay, Quinn Barber |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Channel (digital image) business.industry Scattering Image processing Biasing 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Imaging phantom 010309 optics Optics Hadamard transform 0103 physical sciences Electrode 0210 nano-technology business Preclinical imaging |
| Zdroj: | Optics Letters. 43:3425 |
| ISSN: | 1539-4794 0146-9592 |
| Popis: | A novel 3D photoacoustic imaging technique is experimentally demonstrated using a 64×64 element bias-sensitive crossed-electrode relaxor array. This technique allows for large 2D arrays to receive across all elements while using minimal channel counts. Hadamard-bias patterns are applied to column electrodes while signals are measured from row electrodes. Photoacoustic signals are measured from a crossed-wire phantom in an intralipid scattering medium. The Hadamard-bias-encoded imaging scheme showed a signal-to-noise (SNR) of 25.3 dB, while the single-column biasing strategy (or identity-matrix-bias pattern) showed a SNR of 8.8 dB. |
| Databáze: | OpenAIRE |
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