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Titolo:
IMPROVED BLOOD VELOCITY ESTIMATION USING THE MAXIMUM DOPPLER FREQUENCY
Autore:
TORTOLI P; GUIDI G; NEWHOUSE VL;
Indirizzi:
UNIV FLORENCE,DEPT ELECTR ENGN,VIA SANTA MARTA 3 I-50139 FLORENCE ITALY DREXEL UNIV,INST BIOMED ENGN & SCI PHILADELPHIA PA 19104
Titolo Testata:
Ultrasound in medicine & biology
fascicolo: 4, volume: 21, anno: 1995,
pagine: 527 - 532
SICI:
0301-5629(1995)21:4<527:IBVEUT>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
ULTRASOUND; TRANSVERSE; BANDWIDTH; SIGNALS;
Keywords:
DOPPLER; NARROW VESSEL; VELOCITY ESTIMATION; PEAK FREQUENCY; TRANSVERSE DOPPLER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
P. Tortoli et al., "IMPROVED BLOOD VELOCITY ESTIMATION USING THE MAXIMUM DOPPLER FREQUENCY", Ultrasound in medicine & biology, 21(4), 1995, pp. 527-532

Abstract

In vessels whose diameter is smaller than the length of the range cell or measurement volume, the maximum blood velocity is often calculated from the maximum frequency of the Doppler spectrum, using the classical Doppler equation, It is shown that the accuracy of this procedure is significantly improved at large beam-to-flow angles, if a correction for transit time broadening is made, This finding is based on the demonstration that the maximum frequency of the Doppler spectrum dependsonly on the maximum velocity passing through the measurement volume, but in a manner which is a function both of the Doppler shift frequency as well as the transit time broadening associated with the passage of scatterers through the beam width.

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Documento generato il 21/09/20 alle ore 03:31:48