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. 2022 Mar;48(3):437–449. doi: 10.1016/j.ultrasmedbio.2021.10.010

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© 2021 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig 3 — Impact of imaging parameters on signal-to-noise ratio (SNR) in images of the rabbit abdominal aorta. (a) Influence of mechanical index (MI) on SNR repeated for three cardiac cycles. (b) Influence of compounding angles on SNR. (c) Comparison of SNR between different animals (labeled 1–5) at same imaging depth and at a mechanical index (MI) of 0.14 for contrast-enhanced ultrasound image velocimetry (CEUIV) and 0.33 for contrast-free UIV (CFUIV). (d) Influence of singular value decomposition (SVD) stack size on the SNR at MIs of 0.14 for CEUIV and 0.33 for CFUIV in the same rabbit. (e) Influence of frame rate on SNR at MIs of 0.14 for CEUIV and 0.33 for CFUIV in the same rabbit. (f) Dependence of imaging depth on SNR at MIs of 0.14 for CEUIV and 0.33 for CFUIV in the same rabbit.