Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/93621
Title: Validation of delay-multiply-and-standard-deviation weighting factor for improved photoacoustic imaging of sentinel lymph node
Authors: Paridar, Roya
Pramanik, Manojit
Orooji, Mahdi
Periyasamy, Vijitha
Mehrmohammadi, Mohammad
Mozaffarzadeh, Moein
Basij, Maryam
Keywords: Image Reconstruction
DRNTU::Engineering::Chemical engineering
Noise Suppression
Issue Date: 2018
Source: Paridar, R., Mozaffarzadeh, M., Periyasamy, V., Basij, M., Mehrmohammadi, M., Pramanik, M., & Orooji, M. (2019). Validation of delay‐multiply‐and‐standard‐deviation weighting factor for improved photoacoustic imaging of sentinel lymph node. Journal of Biophotonics, 12(6), e201800292-. doi:10.1002/jbio.201800292
Series/Report no.: Journal of Biophotonics
Abstract: Delay-and-sum (DAS) is one of the most common algorithms used to construct the photoacoustic images due to its low complexity. However, it results in images with high sidelobes and low resolution. Delay-and-standard-deviation (DASD) weighting factor can improve the contrast of the images compared to DAS. However, it still suffers from high sidelobes. In this work, a new weighting factor, named delay-multiply-and-standard-deviation (DMASD) is introduced to enhance the contrast of the reconstructed images compared to other mentioned methods. In the proposed method, the standard deviation of the mutual multiplied delayed signals are calculated, normalized and multiplied to DAS beamformed data. The results show that DMASD improves the signal-to-noise-ratio about 19.29 dB and 7.3 dB compared to DAS and DASD, respectively, for in vivo imaging of the sentinel lymph node. Moreover, the contrast-ratio is improve by the DMASD about 23.61 dB and 10.81 dB compared to DAS and DASD, respectively.
URI: https://hdl.handle.net/10356/93621
http://hdl.handle.net/10220/48756
ISSN: 1864-063X
DOI: 10.1002/jbio.201800292
Rights: This is the peer reviewed version of the following article: Paridar, R., Mozaffarzadeh, M., Periyasamy, V., Basij, M., Mehrmohammadi, M., Pramanik, M., & Orooji, M. (2019). Validation of delay‐multiply‐and‐standard‐deviation weighting factor for improved photoacoustic imaging of sentinel lymph node. Journal of Biophotonics, 12(6), e201800292-. doi:10.1002/jbio.201800292, which has been published in final form at http://dx.doi.org/10.1002/jbio.201800292. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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