ultrasound – Page 2 – TechConnect Briefs

Disinfection of Cryptosporidium Parvum Oocysts in Water using Ultrasonic Treatment

Olvera M.E., Ilangovan K., Instituto Tecnologico y de Estudios Superiores de Monterrey, MX

Ultrasound in a liquid phase cause mass and heat transfer across the liquid through cavitational processes which act as nanoreactors to generate unstable mechanical equilibrium. The effect of 1 MHz ultrasound on the inactivation of [...]

Chitosan Nanoparticle Combined with Ultrasound for Cervical Cancer Detection

Tsai K-C, Shieh M.J., Yang S.J., Lin W-L, Chen W-S, Institute of Biomedical Engineering, TW

Photodynamic medicine is a novel approach for cancer detection and treatment via different photosensitizers and suitable light source. The 5-Aminolevulinic acid (5-ALA) can be converted into protoporphyrin IX (PpIX) that can be utilized as a [...]

Microscopic Mechanism of Sonoporation

Prentice P.A., Burns J.M., Cuschieri A., Campbell P.A., University of Dundee, UK

This paper will expand on our recent paper in Nature Physics (November 2005) and will show that the initial observations can be extended from rigid albumin systems to flexible lipid based microbubbles also. We will [...]

Modelling the Microscopic Mechanisms of Sonoporation

Burns J.M., Prentice P.A., Cuschieri A., Campbell P.A., University of Dundee, UK

This work constitutes a theoretical follow up to our earlier paper in Nature Physics (November 2005) in which we demonstrate that, in the high amplutude limit, ultrasound stimulated microbubble cavitation behaviour can be approximated without [...]

A Novel Ultrasonic Method for Characterizing Suspensions of Nanoparticles

Africk S., Colton C.K., Prodyne Corp. and Massachusetts Institute of Technology, US

Originally developed to measure concentration of human Islets of Langerhans in transplant preparations, the Ultrasonic Pulsed Doppler (USPD) method uses a single transducer as both source and receiver of pulsed ultrasound to measure backscattered energy [...]