INTERACTION OF ULTRASOUND WITH BIOLOGICAL MATERIALS
Journal Title: Journal of Science And Arts - Year 2010, Vol 13, Issue 2
Abstract
This paper deals with medical applications of focused ultrasound in minimally invasive treatment of a variety of disorders. The pressure distributions generated by plane as well as focused ultrasound beams are presented. Ultrasound imaging uses the transmission and reflection of high-frequency longitudinal, mechanical waves in tissues. Image forming information is provided by the differing degree to which the energy of such waves is reflected from the surfaces between different tissues; the reflection is due to differences in the mechanical properties of the tissues. Using the wave propagation speed in tissues, time of reflection information can be converted into distance of reflection information. Two interesting features of the interaction including the shape and size of the focal region as well as the spatial distribution of the pressure field in the material have been presented.
Authors and Affiliations
LUMINITA MORARU, MARIANA CARMEN NICOLAE
Keywords
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