Figure 1.

Multiple parameter MRI assessment of thermal HIFU ablation of uterine fibroids. Patient 31 (52 years old, intramural leiomyoma). Coronal images at the treatment plane pre- and post-HIFU ablation. (a) Contrast-enhanced T1-weighted image acquired pretreatment. (b) DW image acquired pretreatment. (c) T2-weighted image acquired pretreatment. (d) ADC map pretreatment (ADC value: $1287\pm 258\times {10}^{-6}\text{m}{\text{m}}^2/\text{s}$). (e) Contrast-enhanced T1-weighted image acquired posttreatment. The area of the resulting nonperfused region (demarcated with a light grey line in pane e) was 20.8 cm². The thermal dose estimate calculated from the temperature maps is shown in the inset figure, at the upper right corner. Areas that reached a thermal dose of 240 min are grey, and areas that reached a thermal dose of 18 min are white. The area of the region with a thermal dose exceeding 18 min at 43°C was 14.7 cm². (f) DW image acquired posttreatment. The area of the resulting hyperintense region (outlined with a light grey line in pane f) was 22.8 cm². (g) T2-weighted image acquired posttreatment, the affected area appears hyperintense (h) ADC map posttreatment, the affected area appears hypointense (ADC value: $923\pm 175\times {10}^{-6}\text{m}{\text{m}}^2/\text{s}$). Figure adapted from [8].