Fig. 2: Microbubble localization efficiency of SC-ULM and PSF-CC ULM with synthetic imaging data.
From: Hybrid photoacoustic and fast super-resolution ultrasound imaging
a Left to right: a simulated ultrasound image of 100 microbubbles randomly located in an area of 6.25 mm2 (an average density of 16 microbubbles mm−2) with their ground-truth locations (marked as red dots), the recovered microbubble locations (white dots) using the PSF-CC method, and the recovered microbubble locations (white dots) using the SC method. The SC method recovers 92% of microbubbles, while PSF-CC recovers 35%. b Left to right columns represent the zoom-in images of three selected areas with different microbubble densities. The first row is the simulated microbubble ultrasound images. The second and the third row compare the recovered microbubble locations using the two methods. The white dots represent recovered microbubble locations, and the red dots represent the ground-truth locations. c The average microbubble recovery percentage as a function of microbubble densities using the SC method (blue) and the PSF-CC method (black). The error bar is the standard deviation (N = 20). d The average localization error (left y-axis) and the standard deviation (N = 20, right y-axis) as a function of microbubble densities using the two methods.
