Fig. 6: Comparative analysis between E-uPIV images of high-concentration microbubbles acquired in a short time and ultrasound localization microscopy (ULM) images acquired under the low-density microbubbles over a longer duration.

The white boxes indicate regions of interest, which are magnified in the middle panel. One-dimensional distributions at three different cross sections (marked with green annotations as I, II, and III) are compared. CEUS MIP represents the maximum intensity projection (MIP) of contrast-enhanced ultrasound (CEUS) images.