<prompt> HIFU stands forHigh Intensity Fluoroscopic UltrasoundHigh Intensity Focused UltrasoundHigh Interval Fractionated UltrasoundHigh Interference Fragmented Ultrasound  <response>: HIFU stands for High-Intensity Focused Ultrasound. HIFU uses High Intensity Focused Ultrasound beam in the treatment of uterine fibroids and other lesions. it acts due to the thermal, mechanical and cavitational effects of the high-intensity Ultrasound beam in tissues. 