Skip to main content
. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Med Phys. 2018 Jun 1;45(7):2925–2936. doi: 10.1002/mp.12975

Table 2.

Correlations of various treatment parameters with the percentage change in the energy-temperature efficiencies, taken for all nineteen (19) clinical cases, listed with their associated P values. Also included is the multiple linear regression over all five variables.

Correlation with Percentage Change in Efficiency
Peak temperature 0.54 (P = 0.02)
Peak energy −0.79 (P < 0.01)
Peak power −0.59 (P < 0.01)
Peak time −0.81 (P < 0.01)
Multiple Linear Regression over all Variables R-squared 0.82 (P < 0.01)
Percentage Change in Focal Size* −0.62 (P < 0.01)

The percentage change in the focal size is marked with an asterisk, since in this regression the power-temperature efficiency was calculated, instead of the energy-temperature efficiency, since all temperature maps were taken at the 9-s timepoint. In addition, the change in focal size only considered axial sonications.