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Titolo:
Estimation of aortic compliance using magnetic resonance pulse wave velocity measurement
Autore:
Boese, JM; Bock, M; Schoenberg, SO; Schad, LR;
Indirizzi:
Deutsch Krebsforschungszentrum, D-69120 Heidelberg, Germany Deutsch Krebsforschungszentrum Heidelberg Germany D-69120 lberg, Germany
Titolo Testata:
PHYSICS IN MEDICINE AND BIOLOGY
fascicolo: 6, volume: 45, anno: 2000,
pagine: 1703 - 1713
SICI:
0031-9155(200006)45:6<1703:EOACUM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
VASCULAR COMPLIANCE; NMR MEASUREMENT; DISTENSIBILITY; AGE; REPRODUCIBILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Boese, JM Deutsch Krebsforschungszentrum, D-69120 Heidelberg, Germany Deutsch Krebsforschungszentrum Heidelberg Germany D-69120 many
Citazione:
J.M. Boese et al., "Estimation of aortic compliance using magnetic resonance pulse wave velocity measurement", PHYS MED BI, 45(6), 2000, pp. 1703-1713

Abstract

A method for compliance estimation employing magnetic resonance pulse wavevelocity measurement is presented. Time-resolved flow waves are recorded at several positions along the vessel using a phase contrast sequence, and pulse wave velocity is calculated from the delay of the wave onsets. Using retrospective cardiac gating in combination with an optically decoupled electrocardiogram acquisition, a high temporal resolution of 3 ms can be achieved. A phantom set-up for the simulation of pulsatile flow in a compliant vessel is described. In the phantom, relative errors of pulse wave velocity estimation were found to be about 15%, whereas in a volunteer, larger errorswere found that might be caused by vessel branches. Results of pulse wave velocity estimation agree with direct aortic distension measurements which rely on a peripheral estimate of aortic pressure and are therefore less accurate. Studies in 12 volunteers show values of pulse wave velocity consistent with the literature; in particular the well-known increase in pulse wavevelocity with age was observed. Preliminary results show that the method can be applied to aortic aneurysms.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 13:12:28