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. 2023 Jul 16;13:11477. doi: 10.1038/s41598-023-38531-w

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© The Author(s) 2023

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MB backscattering and ultrasound beam geometry. (A) Schematic of an ultrasound beam produced by a linear array transducer and of a microbubble (MB) flowing through a blood vessel orthogonal to the imaging plane. t_i: time point i. The red curves show the simulated normalized ultrasound intensity along the Z dimension (averaged along X and Y) (right) and y dimension (z = 5 mm, averaged along X) (bottom). (B) BMode images of the microbubble at t₁ and t₂. (C) Variation of the backscattered ultrasound intensity and consequently of the amplitude on the BMode image as a function of Y for a fixed (x₀, z₀) position. The red curve show the simulated normalized ultrasound intensity along the Y dimension (z = 5 mm, averaged along X).