High- and Low-Intensity Focused Ultrasound.

The article focuses on the principles and applications of high- and low-intensity focused ultrasound (FUS) in medical imaging and therapy. It explains the evolution of ultrasonography, detailing how focused ultrasound (FUS) has emerged as a noninvasive therapeutic option, with high-intensity focused ultrasound (HIFU) primarily used for tumor ablation and low-intensity focused ultrasound (LIFU) utilized for healing and pain management. The text outlines the biophysical effects of different FUS modes, including thermal and mechanical effects, and discusses their therapeutic applications, such as enhancing drug delivery and treating various medical conditions. The article emphasizes the advantages of FUS, including its noninvasive nature and reduced recovery times compared to traditional surgical methods.