APPROXIMATING THE ACOUSTIC REFLECTION COEFFICIENT OF LOSSY BIOLOGICALTISSUES

Authors
LE LH FILIPOW LJ
Citation
Lh. Le et Lj. Filipow, APPROXIMATING THE ACOUSTIC REFLECTION COEFFICIENT OF LOSSY BIOLOGICALTISSUES, Physics in medicine and biology, 42(4), 1997, pp. 757-758
Citations number
3
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
Physics in medicine and biology → ACNP
ISSN journal
00319155
Volume
42
Issue
4
Year of publication
1997
Pages
757 - 758
Database
ISI
SICI code
0031-9155(1997)42:4<757:ATARCO>2.0.ZU;2-4
Abstract
The amplitude acoustic reflection coefficient of an interface between two lossy biological tissues can be approximated as R(lossy) approxima te to R(lossless) + i Delta/2 where R(lossless) is the lossless acoust ic reflection coefficient and Delta is the change in alpha/k (absorpti on coefficient per wavenumber) across the tissue interface. This appro ximation is shown to be valid for both normal and oblique angles of in cidence.