SPECTRA OF ULTRASOUND DOPPLER RESPONSE USING PLANE‐WAVECOMPOUNDING TECHNIQUE

Abstract

Introduction. Within the framework of a simple model of the sensitivity function, the Doppler spectra are considered for different ways of generating response signals using plane wave compounding.

Methods. A Doppler spectrum is obtained for coherent compounding of signals received at different steering angles of waves during their period of changing. Compared to traditional diagnostic systems, the Doppler spectrum width is increased only by limiting the duration of the signals. There is no additional increase in the spectrum width if the compound signals are formed by adding with cyclic permutation, in which signals from each new wave angle are compounded.

Results. When a Doppler signal is formed directly from Doppler signals at different steering angles, the spectral width increases both in comparison with the traditional method of sensing with stationary focused ultrasound fields and with the case of coherent signal compounding.

Conclusions. The obtained increase in the spectral width has an intrinsic physical meaning. The increase in width is connected with a dynamic change in the Doppler angle, which increases the interval of apparent projections of the velocities of motion of inhomogeneities along the direction of transmitting of a plane wave without inclination.

References

Golfetto, C., Ekroll, I.K., Torp, H., Løvstakken, L., & Avdal, J. (2021). Retrospective Transmit Beamforming and Coherent Plane-Wave Compounding for Microvascular Doppler Imaging: A Comparison Study. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 68(4), 1105. https://doi.org/10.1109/TUFFC.2020.3033719

Hyun, D., & Dahl, J.J. (2020). Effects of motion on correlations of pulse-echo ultrasound signals: Applications in delay estimation and aperture coherence. The Journal of the Acoustical Society of America, 147(3), 1323. https://doi.org/10.1121/10.0000809

Montaldo, G., Tanter, M., Bercoff, J., Benech, N., & Fink, M. (2009). Coherent plane-wave compounding for very high frame rate ultrasonography and transient elastography. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 56(3), 489. https://doi.org/10.1109/TUFFC.2009.1067

Provost, J., Papadacci, C., Demene, C., Gennisson, J., Tanterand, M., & Pernot M. (2015). 3-D ultrafast doppler imaging applied to the noninvasive mapping of blood vessels in Vivo. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 62(8), 1467. https://doi.org/10.1109/TUFFC.2015.007032

Sheina, I.V., Kiselov, O.B., & Barannik, E.A. (2020). Power Spectra of Doppler Response Signals from Biological Objects Using Synthetic Aperture Ultrasound. East European Journal of Physics, 4, 5. https://doi.org/10.26565/2312-4334-2020-4-01

Sheina, I.V., & Barannik, E.A. (2022). Resolution of the Ultrasound Doppler System Using Coherent Plane-Wave Compounding Technique. East European Journal of Physics, 1, 116. https://doi.org/10.26565/2312-4334-2022-1-16

Shen, C.-C., & Chu, Y.-C. (2021). Beamforming with Complementary Subset Transmit for Ultrasound Coherence-Based Power Doppler Detection in Multi-Angle Plane-Wave Imaging. Sensors, 21, 4856. https://doi.org/10.3390/s21144856

Trots, I., Nowicki, A., Lewandowski, M., & Tasinkevych, Y. (2011). Synthetic Aperture Method in Ultrasound Imaging. In Masayuki Tanabe (Ed.), Ultrasound Imaging (pp. 37–56). InTech. https://doi.org/10.1109/ACCESS.2017.2768387

Zheng, C., Zha, Q., Zhang, L., & Peng H. (2018). Signal Eigenvalue Factor for Synthetic Transmit Aperture Ultrasound Imaging. IEEE Access, 6, 495.