Compensation of Finite Bandwidth Effect by Using an Optimal Filter in Photoacoustic Imaging

Chen Zhang, Yan Zhang, Yuanyuan Wang

Department of Electronic Engineering, Fudan University, Shanghai, China.

DOI: 10.4236/eng.2013.510B006                

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.

Keywords

Photoacoustic Tomography; Finite Bandwidth Effect; Optimal Filter

Conflicts of Interest

The authors declare no conflicts of interest.

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