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Compensation of Finite Bandwidth Effect by Using an Optimal Filter in Photoacoustic Imaging
Department of Electronic Engineering, Fudan University, Shanghai, China
Department of Electronic Engineering, Fudan University, Shanghai, China
Department of Electronic Engineering, Fudan University, Shanghai, China
- 1 Department of Electronic Engineering, Fudan University, Shanghai, China
- 2 Department of Electronic Engineering, Fudan University, Shanghai, China
- 3 Department of Electronic Engineering, Fudan University, Shanghai, China
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Abstract
Most existing reconstruction algorithms for photoacoustic imaging (PAI) assume that transducers used to receive ultrasound signals have infinite bandwidth. When transducers with finite bandwidth are used, this assumption may result in reduction of the imaging contrast and distortions of reconstructed images. In this paper, we propose a novel method to compensate the finite bandwidth effect in PAI by using an optimal filter in the Fourier domain. Simulation results demonstrate that the use of this method can improve the contrast of the reconstructed images with finite-bandwidth ultrasound transducers.
KeywordsPhotoacoustic TomographyFinite Bandwidth EffectOptimal Filter
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