TY - GEN
T1 - Modeling the point spread function of paired angle multiplicative compounding in ultrasound
AU - Macione, J.
AU - Contreras, S.
AU - Yang, Z.
AU - Chiu, T.
AU - Kotha, S. P.
AU - Fox, M.
N1 - Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - Spatial compounding has recently been introduced into modern commercial ultrasound systems. These systems are able to reduce angular dependent artifacts by averaging multiple images taken from different angles. In order to further reduce angular dependent artifacts, paired angle multiplicative compounding (PAMC) was recently introduced. The multiplication of pairs of images acquired from different angles reduces angular dependent artifacts while amplifying areas of signal. The quantification of improvement in PAMC images has proved difficult since images can become corrupt with high standard deviation background noise, limiting statistical evaluations from showing the true merit. In order to present a more theoretical understanding of PAMC, as well a way to gauge theoretical improvements, the point spread function (PSF) is used for analysis. This paper presents a simple geometrical model of the PAMC PSF based on the combination of two component Bscan PSFs. In order to validate the model, we compare it to a set of simulated PAMC PSFs created by varying the angle of paired multiplication. Both the theory and geometrical model are in agreement over the range [10°, 170°], allowing the optimal angle of paired multiplication to be determined to be 90°, yielding a PSF approximately 5x smaller than without pairing.
AB - Spatial compounding has recently been introduced into modern commercial ultrasound systems. These systems are able to reduce angular dependent artifacts by averaging multiple images taken from different angles. In order to further reduce angular dependent artifacts, paired angle multiplicative compounding (PAMC) was recently introduced. The multiplication of pairs of images acquired from different angles reduces angular dependent artifacts while amplifying areas of signal. The quantification of improvement in PAMC images has proved difficult since images can become corrupt with high standard deviation background noise, limiting statistical evaluations from showing the true merit. In order to present a more theoretical understanding of PAMC, as well a way to gauge theoretical improvements, the point spread function (PSF) is used for analysis. This paper presents a simple geometrical model of the PAMC PSF based on the combination of two component Bscan PSFs. In order to validate the model, we compare it to a set of simulated PAMC PSFs created by varying the angle of paired multiplication. Both the theory and geometrical model are in agreement over the range [10°, 170°], allowing the optimal angle of paired multiplication to be determined to be 90°, yielding a PSF approximately 5x smaller than without pairing.
KW - Imaging
KW - Paired angle multiplicative compounding
KW - Point spread function
KW - Ultrasound
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U2 - 10.1007/978-3-642-03879-2_239
DO - 10.1007/978-3-642-03879-2_239
M3 - Conference contribution
AN - SCOPUS:77950884005
SN - 9783642038785
T3 - IFMBE Proceedings
SP - 857
EP - 859
BT - World Congress on Medical Physics and Biomedical Engineering
PB - Springer Verlag
T2 - World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging
Y2 - 7 September 2009 through 12 September 2009
ER -