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6 March 2020 Low complexity and flexible baseband delay-multiply-and-sum photoacoustic array imaging (Conference Presentation)
Meng-Lin Li, Che-Chou Shen
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Proceedings Volume 11240, Photons Plus Ultrasound: Imaging and Sensing 2020; 112402K (2020) https://doi.org/10.1117/12.2546990
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
Recently, radio-frequency (RF) delay-multiply-and-sum (RF-DMAS) algorithm has been proposed for photoacoustic (PA) imaging, featuring improved signal-to-noise ratio, contrast and lateral resolution. However, it requires oversampling to avoid aliasing and additional band-pass filtering (BPF) to keep the harmonic components for imaging. Here we propose baseband DMAS (BB-DMAS) algorithm for PA array imaging, offering similar results to the RF-DAMS ones but with simplified signal processing and additional flexibility. No oversampling and BPF is required. Experimental results show that the BB-DMAS algorithm provides similar image quality to the RF-DAMS one with lower complexity. The image quality can also be flexibly tuned accordingly.
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Meng-Lin Li and Che-Chou Shen "Low complexity and flexible baseband delay-multiply-and-sum photoacoustic array imaging (Conference Presentation)", Proc. SPIE 11240, Photons Plus Ultrasound: Imaging and Sensing 2020, 112402K (6 March 2020); https://doi.org/10.1117/12.2546990
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KEYWORDS
Imaging arrays
Photoacoustic imaging
Photoacoustic spectroscopy
Image quality
Multispectral imaging
Bandpass filters
Image filtering
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