ULTRASONIC THERAPY

Investigation of ultrasonic waveguides for medical therapy

Theoretically it was determined that changing longitudinal rigidity of waveguide the longitudinal vibrations amplitudes are increasing. The cross-section of waveguide is decreasing from the generating point towards its free end. Experimental results show that the free end of the waveguide is influenced by longitudinal vibrations only, which could be used for blood vessels cleaning.

Ultrasonic assessment of thermal therapy in rat liver.

One way to assess the efficacy of thermal therapy is to quantify changes in tissue properties through ultrasonic interrogation, which requires knowledge of the acoustic properties of thermally treated tissues. In this study, estimates of ultrasonic attenuation, speed of sound, backscatter coefficient (BSC), and scattering property estimates were generated from rat liver samples submersed for 10...

High power transcranial beam steering for ultrasonic brain therapy.

A sparse phased array is specially designed for non-invasive ultrasound transskull brain therapy. The array is made of 200 single elements corresponding to a new generation of high power transducers developed in collaboration with Imasonic (Besançon, France). Each element has a surface of 0.5 cm2 and works at 0.9 MHz central frequency with a maximum 20 W cm(-2) intensity on the transducer surfa...

Ultrasonic Periodontal Therapy - Benefits for the Patient and the Practice

The prevention of periodontal disease is a key factor in oral health. It has also become evident that periodontal health is associated with systemic health. Nonsurgical scaling and root planing is the standard of care for periodontitis. Supragingival plaque removal influences the bacterial environment in pockets up to 3 mm in depth, while subgingival scaling and root planing is essential in poc...

Optimizing Ultrasonic Intensity for High Intensity Focused Ultrasound Therapy