. Author manuscript; available in PMC: 2017 Apr 7.

Published in final edited form as: J Vasc Interv Radiol. 2011 Apr 8;22(6):857–864. doi: 10.1016/j.jvir.2011.01.458

Table 3.

Sonication Energies and Treatment Temperatures for Patient Groups Based on T2-weighted Imaging Appearance

Group	Sonication Energy (J)^*			Treatment Temperature (°C)^†
Group	Mean ± SD	Median	Range	Mean ± SD	Median	Range
Dark
Minimal heterogeneity	2,302 ± 710	2,200	417–4,200	69.2 ± 9.8	69	38–105
Substantial heterogeneity	2,489 ± 688	2,400	374–4,080	69.4 ± 9.7	69	43–140
Isointense	2,253 ± 471	2,160	1,280–3,412	65.7 ± 7.5	66	49–91
Bright	2,645 ± 624	2,400	621–3,840	66.4 ± 9.2	66	41–102
Overall	2,403 ± 695	2,366	374–4,200	68.9 ± 9.7	68	38–140

Based on an F-test from a one-way analysis of variance model, the mean sonication energy level was significantly different among the four groups (P < .001). On the Tukey Studentized range test to control for the multiple comparisons, all pairwise comparisons still attained significance (P < .05) except dark with minimal heterogeneity versus isointense.

^†

Mean temperature was significantly different among the four groups (P < .001). With the Tukey Studentized range test to control for multiple comparisons, all pairwise comparisons still attained significance (P < .05) except for dark with minimal heterogeneity versus dark with substantial heterogeneity and isointense versus bright.