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Proceedings Paper

Low complexity and flexible baseband delay-multiply-and-sum photoacoustic array imaging (Conference Presentation)

Paper 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.

Paper Details

Date Published: 6 March 2020
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Proc. SPIE 11240, Photons Plus Ultrasound: Imaging and Sensing 2020, 112402K (6 March 2020); doi: 10.1117/12.2546990
Show Author Affiliations
Meng-Lin Li, National Tsing Hua Univ. (Taiwan)
Che-Chou Shen, National Taiwan Univ. of Science and Technology (Taiwan)


Published in SPIE Proceedings Vol. 11240:
Photons Plus Ultrasound: Imaging and Sensing 2020
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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