The use of acoustic microscopy for biological tissue characterization.

A system of transmission raster acoustic microscope with an ultrasound frequency of 450 MHz has been designed to investigate biological tissues and comparative analysis of their optical and acoustic images. The possibility of obtaining the contrast acoustic images of nonfixed, nonstained biological tissues and viscoelasticity measurements in microscale was demonstrated.

Development of ultrasonic investigations in medicine and biology in the U.S.S.R.

Ultrasonic research in biology and medicine, both fundamental and applied, has become so vast in scope, that a mere listing of specific subject-areas would take up too much space. This article is intended to give an overview of Soviet scientists' contribution to the field, with the emphasis on the most important and promising subject-areas which are now given priority in the U.S.