Fig. 4
From: Status quo and directions in deep head and neck hyperthermia
Coronal views in VEDO of the predicted normalized cubic-filtered SAR (%) and temperature (°C) distributions displayed as overlay over the CT scan. This figure shows the effectiveness of real-time adaptive treatment by adjusting the pre-optimized power absorption distributions. Re-optimization reduced the SAR at the hotspot (Region 3, yellow contour) by 2.3-fold and the maximum temperature by 2.2 °C, while the predicted temperature in the entire clinical target volume (CTV, red contour) was virtually unaffected, i.e. T90 reduced from 39.6 °C to 39.5 °C. Note that, following this effective re-optimization, increase in power can be used to increase the temperatures in the target region