Figure 7
Entropy values as a function of the PCF and obtained using different transducers and WSLs for ultrasound entropy imaging. The Spearman correlation analysis was performed to calculate rs and the p value (a significant correlation was considered according to the p value < 0.05). Significant differences between data were identified by using one-way ANOVA, as indicated by the symbol ‘*’. With the 3.5-MHz focused transducer, the entropy value monotonically decreased with increasing PCF, indicating a decrease in signal uncertainty.
