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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
|
| pubmed:dateCreated |
1984-9-19
|
| pubmed:abstractText |
We have measured the ultrasonic attenuation parameters alpha o and n of several biological fluids in vitro in the frequency range 2.8-6.8 MHz, using frequency shift and/or a sinc (.) sidelobe ratio technique. The parameters alpha 0 and n describe the frequency-dependent attenuation via a power-law model, i.e., alpha(f) = alpha 0 fn, where f is frequency. The samples investigated were blood, pus, cyst fluid, bile, and infected hematoma. It was found that the values of alpha o span approximately the range between 0.03-0.3 dB cm-1 MHz-n, and values of n range from about 1.1-1.3.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jul
|
| pubmed:issn |
0001-4966
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
76
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
1-4
|
| pubmed:dateRevised |
2008-11-21
|
| pubmed:meshHeading |
pubmed-meshheading:6747101-Acoustics,
pubmed-meshheading:6747101-Bile,
pubmed-meshheading:6747101-Blood Physiological Phenomena,
pubmed-meshheading:6747101-Body Fluids,
pubmed-meshheading:6747101-Cysts,
pubmed-meshheading:6747101-Hematoma,
pubmed-meshheading:6747101-Humans,
pubmed-meshheading:6747101-Suppuration,
pubmed-meshheading:6747101-Ultrasonography
|
| pubmed:year |
1984
|
| pubmed:articleTitle |
The attenuation of ultrasound in biological fluids.
|
| pubmed:publicationType |
Journal Article
|