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Titolo:
REPRODUCIBILITY OF SHEAR RATE AND SHEAR-STRESS ASSESSMENT BY MEANS OFULTRASOUND IN THE COMMON CAROTID-ARTERY OF YOUNG HUMAN MALES AND FEMALES
Autore:
SAMIJO SK; WILLIGERS JM; BRANDS PJ; BARKHUYSEN R; RENEMAN RS; KITSLAAR PJEHM; HOEKS APG;
Indirizzi:
MAASTRICHT UNIV,CARDIOVASC RES INST,DEPT BIOPHYS,POB 616 NL-6200 MD MAASTRICHT NETHERLANDS MAASTRICHT UNIV,CARDIOVASC RES INST,DEPT BIOPHYS NL-6200 MD MAASTRICHT NETHERLANDS MAASTRICHT UNIV,CARDIOVASC RES INST,DEPT PHYSIOL MAASTRICHT NETHERLANDS MAASTRUCHT UNIV,CARDIOVASC RES INST,DEPT SURG MAASTRICHT NETHERLANDS ACAD HOSP MAASTRICHT MAASTRICHT NETHERLANDS
Titolo Testata:
Ultrasound in medicine & biology
fascicolo: 4, volume: 23, anno: 1997,
pagine: 583 - 590
SICI:
0301-5629(1997)23:4<583:ROSRAS>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN-ENDOTHELIAL-CELLS; FLOW; MECHANISMS; DIAMETER;
Keywords:
BLOOD HOW VELOCITY; CAROTID ARTERY; GENDER; REPRODUCIBILITY; ULTRASOUND; WALL SHEAR RATE; WALL SHEAR STRESS; WHOLE BLOOD VISCOSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
S.K. Samijo et al., "REPRODUCIBILITY OF SHEAR RATE AND SHEAR-STRESS ASSESSMENT BY MEANS OFULTRASOUND IN THE COMMON CAROTID-ARTERY OF YOUNG HUMAN MALES AND FEMALES", Ultrasound in medicine & biology, 23(4), 1997, pp. 583-590

Abstract

In the present study, the reliability of an ultrasonic shear rate estimating system, in terms of intrasubject intrasession, intersubject intrasession and intersubject intersession variability coefficients, forthe assessment of mall shear rate (WSR) in the common carotid artery (CCA) was determined in eight presumed healthy volunteers. Measurements were performed on consecutive days (day 1, day 2 and day 7). To investigate whether there were differences in WSR due to gender, dynamic WSR in the CCA was assessed in 11 presumed healthy males (mean age 24 y) and 11 presumed healthy females (mean age 25 y). Wall shear stress (WSS) was estimated from WSR and calculated whole blood viscosity. The average intrasubject intrasession variability was about 15% for peak WSR and about 12% for mean WSR. The intersubject intrasession variability for peak WSR decreased from 19% on day 1 to 16% an day 7 and for mean WSR from 17% on day 1 to 11% on day 7. The intersubject intersession variability is on the order of 5% for peak WSR and about 4% for meanWSR. No significant differences could be detected between peak and mean WSR values on day 1, day 2 and day 7, indicating good short- and medium-term intersubject intersession reproducibilities. No differences in peak and mean WSR were found between the left and the right CCA in the male group as well as in the female group. Mean WSS was similar inmales (1.3 +/- 0.3 Pa) and in females (1.2 +/- 0.2 Pa), but peak WSS was slightly, but significantly, higher in males (4.3 +/- 1.3 Pa) thanin females (3.3 +/- 0.7 Pa). It can be concluded that peak and mean WSR fan be reliably determined noninvasively using ultrasound. (C) 1997World Federation for Ultrasound in Medicine & Biology.

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Documento generato il 29/09/20 alle ore 22:57:49