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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5
|
| pubmed:dateCreated |
1990-3-19
|
| pubmed:abstractText |
The asymmetry of the spectral distribution of ultrasonic Doppler flow velocity signals, assessed using the coefficient of skewness, is discussed as a criterion of stenosis differentiation. Its performance is compared with that of the index of turbulence intensity for both in vitro and in vivo flow Doppler signals, recorded distal to a stenosis. The power spectral distributions are computed using the direct Fourier transform and maximum likelihood method. The asymmetry of spectral distribution has proved to be a more efficient criterion than the turbulence intensity. The maximum likelihood method ensures better stenosis differentiation than the direct FFT method.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Sep
|
| pubmed:issn |
0140-0118
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
27
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
456-62
|
| pubmed:dateRevised |
2003-11-14
|
| pubmed:meshHeading |
pubmed-meshheading:2695692-Animals,
pubmed-meshheading:2695692-Carotid Artery Diseases,
pubmed-meshheading:2695692-Constriction, Pathologic,
pubmed-meshheading:2695692-Dogs,
pubmed-meshheading:2695692-Fourier Analysis,
pubmed-meshheading:2695692-Mathematical Computing,
pubmed-meshheading:2695692-Models, Cardiovascular,
pubmed-meshheading:2695692-Models, Structural,
pubmed-meshheading:2695692-Signal Processing, Computer-Assisted,
pubmed-meshheading:2695692-Spectrum Analysis,
pubmed-meshheading:2695692-Ultrasonography
|
| pubmed:year |
1989
|
| pubmed:articleTitle |
Asymmetry of Doppler spectrum in stenosis differentiation.
|
| pubmed:publicationType |
Journal Article
|