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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2019 Sep 19;67(2):248–257. doi: 10.1109/TUFFC.2019.2942557

Fig. 4.

Fig. 4.

The relationship between pulse repetition interval (PRI), and the number of virtual sources (N) for a given volume rate (30 Hz). Black open dots at N=32, N=5, and N=72 represent the available number of virtual sources and a red dot represents the parameters (N=52, PRI=83.25 μs) selected for this study. More than 12.2 GB of system memory was required to store raw RF samples for our study (N = 52, imaging depth of 2 cm, the total number of acquired compounded volumes is 100).