TITLE:
Compensation of Finite Bandwidth Effect by Using an Optimal Filter in Photoacoustic Imaging
AUTHORS:
Chen Zhang, Yan Zhang, Yuanyuan Wang
KEYWORDS:
Photoacoustic Tomography; Finite Bandwidth Effect; Optimal Filter
JOURNAL NAME:
Engineering,
Vol.5 No.10B,
October
23,
2013
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.