Table 3.
Correlations between percentage change in apparent diffusion coefficient (ADC) and applied acoustic energy, thermal dose volume (V240EM), and maximum temperature, showing that statistical significance was achieved at every measured time point, although the strength of the correlations varied
Time after sonication (min) | Correlation between % change in mean ADC and: | ||
---|---|---|---|
Applied acoustic energy | V240EMa | Maximum temperature | |
< 1 | r = 0.73 | ρ = 0.61 | r = 0.50 |
p < 0.001 | p = 0.001 | p = 0.010 | |
1–5 | r = 0.85 | ρ = 0.80 | r = 0.57 |
p < 0.001 | p < 0.001 | p = 0.002 | |
6–10 | r = 0.55 | ρ = 0.48 | r = 0.44 |
p = 0.003 | p = 0.011 | p = 0.023 | |
11–15 | r = 0.77 | ρ = 0.73 | r = 0.53 |
p < 0.001 | p < 0.001 | p = 0.005 | |
16–20 | r = 0.77 | ρ = 0.76 | r = 0.53 |
p < 0.001 | p < 0.001 | p = 0.005 | |
21–50 | r = 0.66 | ρ = 0.52 | r = 0.60 |
p = 0.001 | p = 0.011 | p = 0.003 |
a Non-parametric Spearman’s test was used to correlate non-normally distributed V240EM data