Enhancement and quenching of high-intensity focused ultrasound cavitation activity via short frequency sweep gaps

Enhancement of High-Intensity Focused Ultrasound Heating by Short-Pulse Generated Cavitation

A target tissue can be thermally coagulated in high-intensity focused ultrasound (HIFU) treatment noninvasively. HIFU thermal treatments have been clinically applied to various solid tumors. One of the problems in HIFU treatments is a long treatment time. Acoustically driven microbubbles can accelerate the ultrasonic heating, resulting in the significant reduction of the treatment time. In this...

High-Intensity Focused Ultrasound –

Detection and exploitation of acoustic cavitation for enhancement of MR guided High Intensity Focused Ultrasound heating in ex vivo liver

Purpose/Introduction High Intensity Focused Ultrasound (HIFU) is increasingly used for the non invasive treatment of pathological tissue. The efficiency of heating can be increased by generation of acoustic cavitation in order to modify the local distribution of ultrasound pressure that can be visualized with Magnetic Resonance Acoustic Force Imaging (MR-ARFI). This studies analyzes the change ...

High intensity focused ultrasound (HIFU).

INTRODUCTION Curative treatments for localized prostate cancer, from least invasive to most invasive, include brachytherapy, cryosurgery, three-dimensional conformal radiation therapy, external beam radiation therapy, and radical prostatectomy. A patient with localized, low risk or intermediate risk prostate cancer who is diagnosed at an early age and receives one of these treatments has only a...

In vivo photoacoustics and high frequency ultrasound imaging of mechanical high intensity focused ultrasound (HIFU) ablation.

The thermal effect of high intensity focused ultrasound (HIFU) has been clinically exploited over a decade, while the mechanical HIFU is still largely confined to laboratory investigations. This is in part due to the lack of adequate imaging techniques to better understand the in-vivo pathological and immunological effects caused by the mechanical treatment. In this work, we explore the use of ...