Nonlinear photoacoustic and ultrasound beamforming through spectral magnitude scaling

Seonghee Cho; Seungwan Jeon; Wonseok Choi; Ravi Managuli; Chulhong Kim

doi:10.1117/12.2576732

5 March 2021 Nonlinear photoacoustic and ultrasound beamforming through spectral magnitude scaling

Seonghee Cho, Seungwan Jeon, Wonseok Choi, Ravi Managuli, Chulhong Kim

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 1164216 (2021) https://doi.org/10.1117/12.2576732
Event: SPIE BiOS, 2021, Online Only

Abstract

Among clinical photoacoustic and ultrasound beamforming (BF) techniques, a nonlinear p-th root delay and sum (NL-p-DAS) exhibits better contrast and resolution than conventional delay-and-sum. However, despite its advantages, signal loss and grainy speckles often degrade image quality by signal deformation. Thus, we proposed a new nonlinear BF algorithm called nonlinear p-th root spectral magnitude scaling (NL-p-SMS), which scales the signal in the spectral domain instead of the temporal domain. As a result, we achieved the enhanced contrast, contrast noise ratio, spatial resolution, and less grainy texture without significant signal or feature loss in both in vivo photoacoustic and ultrasound images.

Conference Presentation

Citation Download Citation

Seonghee Cho, Seungwan Jeon, Wonseok Choi, Ravi Managuli, and Chulhong Kim "Nonlinear photoacoustic and ultrasound beamforming through spectral magnitude scaling", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 1164216 (5 March 2021); https://doi.org/10.1117/12.2576732

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