Figure 18From: Estimating dynamic changes of tissue attenuation coefficient during high-intensity focused ultrasound treatmentΔ α 0 images detecting lesions in ex vivo porcine muscle tissues at 10 min post treatment. The duty cycle was 77%, resulting in TAPs of 34, 37, 39, 44, and 49 W for a HIFU treatment time of 40 s. A total of four lesions were created at every power level.Back to article page