Annotation
In this work, the features of ultrasonic imaging of kidney stones are considered in conditions when submicron size bubbles are present on the surface of the stones. A model is constructed that makes it possible to observe the so-called twinkling artifact, which consists in the formation of a nonstationary colored mosaic structure in ultrasound examination of stones in the Doppler regime. The model is based on the numerical simulation of the elastic equations and the Nolting-Nepayres equation describing cavitation of bubbles. The results of Doppler signal processing are given, which show that cavitation of bubbles does lead to the appearance of a twinkling artifact.
Received: 2017 July 8
Approved: 2017 October 17
PACS:
43.20.+g General linear acoustics
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
A. I. Polyanskiy, O. A. Sapozhnikov
$^1$Department of Acoustics, Faculty of Physics, Lomonosov Moscow State University
$^1$Department of Acoustics, Faculty of Physics, Lomonosov Moscow State University