DocumentCode
2910197
Title
Acoustic characteristics of PVA gel
Author
Hayakawa, K. ; Takeda, S. ; Kawabe, K. ; Shimura, T.
Author_Institution
Fujitsu Lab. Ltd., Kawasaki, Japan
fYear
1989
fDate
3-6 Oct 1989
Firstpage
969
Abstract
Polyvinyl (PVA) alcohol gel is a rubbery material with a high water content, an extremely low acoustic attenuation, and an acoustic impedance close to that of the human body. These characteristics make PVA gel a good candidate as an acoustic coupler between the body and probe during ultrasonic diagnosis. Nonlinearity in acoustic-pressure propagation between pressure input and output was measured for PVA gel. Measurements of the acoustic characteristics of PVA gel show that PVA gel has nonlinearity similar to that of water. It also has extremely low attenuation and good impedance matching to the body
Keywords
acoustic impedance; biomedical ultrasonics; gels; polymers; ultrasonic absorption; acoustic characteristics; acoustic coupler; acoustic impedance; acoustic-pressure propagation nonlinearity; human body; impedance matching; pressure input; pressure output; ultrasonic diagnosis; Acoustic materials; Acoustic measurements; Acoustic propagation; Attenuation; Humans; Impedance; Nonlinear acoustics; Pressure measurement; Probes; Ultrasonic variables measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location
Montreal, Que.
Type
conf
DOI
10.1109/ULTSYM.1989.67133
Filename
67133
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