Three-dimensional photoacoustic tomography using delay multiply and sum beamforming algorithm

Roya Paridar; Moein Mozaffarzadeh; Ali Mahloojifar; Mohammadreza Nasiriavanaki; Mahdi Orooji

doi:10.1117/12.2291546

22 February 2018 Three-dimensional photoacoustic tomography using delay multiply and sum beamforming algorithm

Roya Paridar, Moein Mozaffarzadeh, Ali Mahloojifar, Mohammadreza Nasiriavanaki, Mahdi Orooji

Proceedings Volume 10494, Photons Plus Ultrasound: Imaging and Sensing 2018; 1049440 (2018) https://doi.org/10.1117/12.2291546
Event: SPIE BiOS, 2018, San Francisco, California, United States

Abstract

Photoacoustic imaging (PAI), is a promising medical imaging technique that provides the high contrast of the optical imaging and the resolution of ultrasound (US) imaging. Among all the methods, Three-dimensional (3D) PAI provides a high resolution and accuracy. One of the most common algorithms for 3D PA image reconstruction is delay-and-sum (DAS). However, the quality of the reconstructed image obtained from this algorithm is not satisfying, having high level of sidelobes and a wide mainlobe. In this paper, delay-multiply-andsum (DMAS) algorithm is suggested to overcome these limitations in 3D PAI. It is shown that DMAS algorithm is an appropriate reconstruction technique for 3D PAI and the reconstructed images using this algorithm are improved in the terms of the width of mainlobe and sidelobes, compared to DAS. Also, the quantitative results show that DMAS improves signal-to-noise ratio (SNR) and full-width-half-maximum (FW HM) for about 25 dB and 0.2 mm, respectively, compared to DAS.

Citation Download Citation

Roya Paridar, Moein Mozaffarzadeh, Ali Mahloojifar, Mohammadreza Nasiriavanaki, and Mahdi Orooji "Three-dimensional photoacoustic tomography using delay multiply and sum beamforming algorithm", Proc. SPIE 10494, Photons Plus Ultrasound: Imaging and Sensing 2018, 1049440 (22 February 2018); https://doi.org/10.1117/12.2291546

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KEYWORDS

Image quality

Signal to noise ratio

Reconstruction algorithms

Phased arrays

3D image processing

Detection and tracking algorithms

Image resolution

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