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. Author manuscript; available in PMC: 2022 Jun 12.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2022 Apr 27;69(5):1670–1681. doi: 10.1109/TUFFC.2022.3161719

TABLE I.

Overview of Feature Extracted by Spatiotemporal Analysis

Analysis method Parameter Description
TIC temporal analysis Peak intensity Intensity of the peak in the TIC
TIC temporal analysis Peak time Time at which the peak intensity is reached
TIC temporal analysis Appearance time Time at which 10% of the peak intensity is reached
TIC temporal analysis Wash-in time Time between appearance time and peak time
TIC temporal analysis Wash-in rate Ratio between peak intensity and time-to-peak
Spatiotemporal similarity Coherence Spectral coherence between each pixel TIC and the neighboring TICs in a ring kernel
Spatiotemporal similarity Correlation Linear correlation between each pixel TIC and the neighboring TICs in a ring kernel
Spatiotemporal similarity Mutual information Mutual information between each pixel TIC and the neighboring TICs in a ring kernel