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Proceedings Paper

Eigenspace-based minimum variance adaptive beamformer combined with delay multiply and sum: experimental study
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Paper Abstract

Delay and sum (DAS) is the most common beamforming algorithm in linear-array photoacoustic imaging (PAI) as a result of its simple implementation. However, it leads to a low resolution and high sidelobes. Delay multiply and sum (DMAS) was used to address the incapabilities of DAS, providing a higher image quality. However, the resolution improvement is not well enough compared to eigenspace-based minimum variance (EIBMV). In this paper, the EIBMV beamformer has been combined with DMAS algebra, called EIBMV-DMAS, using the expansion of DMAS algorithm. The proposed method is used as the reconstruction algorithm in linear-array PAI. EIBMV-DMAS is experimentally evaluated where the quantitative and qualitative results show that it outperforms DAS, DMAS and EIBMV. The proposed method degrades the sidelobes for about 365 %, 221 % and 40 %, compared to DAS, DMAS and EIBMV, respectively. Moreover, EIBMV-DMAS improves the SNR about 158 %, 63 % and 20 %, respectively.

Paper Details

Date Published: 22 February 2018
PDF: 6 pages
Proc. SPIE 10467, Photonics in Dermatology and Plastic Surgery 2018, 1046717 (22 February 2018); doi: 10.1117/12.2291533
Show Author Affiliations
Moein Mozaffarzadeh, Tarbiat Modares Univ. (Iran, Islamic Republic of)
Ali Mahloojifar, Tarbiat Modares Univ. (Iran, Islamic Republic of)
Mohammadreza Nasiriavanaki, Wayne State Univ. (United States)
Mahdi Orooji, Tarbiat Modares Univ. (Iran, Islamic Republic of)

Published in SPIE Proceedings Vol. 10467:
Photonics in Dermatology and Plastic Surgery 2018
Bernard Choi; Haishan Zeng, Editor(s)

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