Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/102649
Title: An efficient image formation algorithm for real-time linear-array photoacoustic tomography
Authors: Mozaffarzadeh, Moein
Periyasamy, Vijitha
Upputuri, Paul Kumar
Pramanik, Manojit
Makkiabadi, Bahador
Keywords: Photoacoustic Tomography
Photoacoustic Imaging
Engineering::Chemical engineering
Issue Date: 2019
Source: Mozaffarzadeh, M., Periyasamy, V., Upputuri, P. K., Pramanik, M., & Makkiabadi, B. (2019). An efficient image formation algorithm for real-time linear-array photoacoustic tomography. Proceedings of SPIE - Photons Plus Ultrasound: Imaging and Sensing 2019.
Abstract: In photoacoustic (PA) imaging using commercial ultrasound transducers, two dimensional PA images are pro-duced by commonly used delay-and-sum (DAS) as the reconstruction method. However, the reconstructed image is a ected by noise and artifacts. Here, we investigate the performance of a nonlinear (NL) beamforming method for linear-array PA image formation. The proposed algorithm uses the pth root of the recorded signals and imposes a computational complexity in the order of DAS (O(M)). We have evaluated the performance of the proposed method numerically, having a signal-to-noise ratio of 30 dB and -10 dB. It is shown that at the depth of 15 mm, the NL 3 (NL beamformer with a p=3) outperforms DAS, DMAS and NL 2 for about 26 dB, 11 dB and 11 dB, in terms of level of sidelobe, respectively. In addition, DAS, DMAS, NL 2 and NL 3 lead to a full-width-half-maximum of about 1.4 mm, 1.04 mm, 1.04 mm and 0.86 mm, respectively. The proposed method can be a great choice for sentinel lymph node imaging.
URI: https://hdl.handle.net/10356/102649
http://hdl.handle.net/10220/49619
DOI: 10.1117/12.2511088
Rights: © 2019 Society of Photo-optical Instrumentation Engineers (SPIE). All rights reserved. This paper was published in Proceedings of SPIE - Photons Plus Ultrasound: Imaging and Sensing 2019 and is made available with permission of Society of Photo-optical Instrumentation Engineers (SPIE).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Conference Papers

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