Focus splitting associated with propagation of focused ultrasound through the rib cage

The effect of focus splitting after propagation of focused ultrasound through a rib cage is investigated theoretically. It is shown that the mechanism of this effect is caused by the interference of waves from two or more spatially separated sources, such as intercostal spaces. Analytical estimates...

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Bibliographic Details
Published inAcoustical physics Vol. 56; no. 5; pp. 665 - 674
Main Authors Khokhlova, V. A., Bobkova, S. M., Gavrilov, L. R.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.09.2010
Subjects
Acoustics
Cage
Estimates
Mathematical analysis
Physical Acoustics
Physics
Physics and Astronomy
Radiators
Ribs
Splitting
Transducers
Ultrasound
Beam Axis
Intercostal Space
Focus Ultrasound
Acoustical Physic
Focal Plane
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Summary:The effect of focus splitting after propagation of focused ultrasound through a rib cage is investigated theoretically. It is shown that the mechanism of this effect is caused by the interference of waves from two or more spatially separated sources, such as intercostal spaces. Analytical estimates of the parameters of splitting are obtained, i.e., the number of foci, their amplitudes, diameter, and the distance between them, depending on the transducer parameters, as well as the dimensions of the rib cage and position of ribs relative to the radiator. Various configurations of the relative positioning of ribs and radiator are considered; it is shown which of them are the most effective for real surgical operations.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1063-7710
1562-6865
DOI:10.1134/S106377101005012X