Fig. 6.

Simulated acoustic pressure and temperature in a representative subject exposed to pulsed 220 kHz ultrasound with a 33.3% duty cycle. The absolute peak-to-peak pressure maximum for the simulations is displayed in gray scale. Temperature is displayed using a heat map with a minimum color priority write threshold of 1°C. Computed tomography features such as bone (cyan), skin and internal epithelium (beige) and clot (green) are plotted using contour lines. The transducer is outlined in magenta. Constructive interference is prominent in the soft tissue between the temporal bone and the transducer. Some constructive interference is also present in the brain tissue close to the contralateral temporal bone; however, the pressure in this region did not exceed the pressure in the M1 section of the middle cerebral artery. Temperature rise was prominent in the ipsilateral bone along the transducer axis. The computational model is described in Kleven et al. (2019).