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Determination of attenuation‐velocity products in a layered homogeneous medium
Author(s) -
Nodar Joseph,
Ho Bong
Publication year - 1991
Publication title -
international journal of imaging systems and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1098-1098
pISSN - 0899-9457
DOI - 10.1002/ima.1850030105
Subject(s) - attenuation , computer science , uniqueness , acoustics , homogeneous , limit (mathematics) , acoustic attenuation , object (grammar) , product (mathematics) , optics , physics , mathematics , mathematical analysis , artificial intelligence , statistical physics , geometry
Attenuation imaging has the promise to become a measurement technique for ultrasound imaging systems more sophisticated than those we currently possess; however, the difficulties in using the presently available methods tend to limit this potential for the non‐specialist. In our recent work, we have investigated the attenuation imaging problem, and have had some success with an alternative technique, namely, attenuation‐velocity product imaging. In certain cases this can be an acceptable substitute for purely attenuation imaging, particularly for the soft tissues encountered in some diagnostic medical situations where the acoustic velocities of the various layers are all of approximately the same value. This article discusses our technique in detail, beginning with fundamental considerations. We make no unreasonable assumptions about the object under study, and yet are able to show the uniqueness of the solution and also deal effectively with the problem of multiple reflections. The data encountered in this experimental configuration have several intriguing properties, which allow us to draw some conclusions about acoustic imaging in general.