Pulsed Doppler: determination of diameter, blood flow velocity, and volumic flow of brachial artery in man

Levenson, J; Péronneau, P.; Simon, Alain; Safar, Michel E.

doi:10.1093/cvr/15.3.164

Cited by 125 publications

(48 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ultrasound techniques, such as pulsed Doppler techniques, allow the determination of the blood velocity at a specific site [15,23]. However, pulsed Doppler scanners have a limited spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

Model-based assessment of dynamic arterial blood volume flow from ultrasound measurements

Leguy

Bosboom

Hoeks

et al. 2009

Med Biol Eng Comput

View full text Add to dashboard Cite

To assess in clinical practice arterial blood volume flow (BVF) from ultrasound measurements, the assumption is commonly made that the velocity profile can be approximated by a quasi-static Poiseuille model. However, pulsatile flow behaviour is more accurately described by a Womersley model. No clinical studies have addressed the consequences on the estimated dynamics of the BVF when Poiseuille rather than Womersley models are used. The aim of this study is to determine the influence of assumed Poiseuille profile instead of Womersley profile on the estimation and intrasubject variability of dynamical parameters of the BVF. For this purpose, a low number of volunteers sufficed. Brachial artery centerline velocity waveform and vessel diameter were measured with ultrasound within a small group of six volunteers. Within subjects, the intra-and inter-registration variability of BVF parameters estimates did not significantly differ. Poiseuille profiles compared to Womersley underestimates the maximum BVF by 19%, the maximum retrograde volume flow by 32% and the rise time by 18%. It can be concluded that when estimating in a straight vessel the dynamic properties of the BVF, Womersley profiles should preferably be chosen.

show abstract

Section: Introductionmentioning

confidence: 99%

Model-based assessment of dynamic arterial blood volume flow from ultrasound measurements

Leguy

Bosboom

Hoeks

et al. 2009

Med Biol Eng Comput

View full text Add to dashboard Cite

show abstract

“…Arterial diameter was expressed in centimeters, with a reproducibility of 3 ± 1%. 15 ' 16 Once the arterial diameter was determined, the velocity of the whole arterial blood column was measured. For this measurement, the width of the measurement volume was increased to the value of the arterial diameter; its depth from the transducer was adjusted to superimpose the measurement volume and the lumen of the artery.…”

Section: Methodsmentioning

confidence: 99%

Hemodynamics of the carotid artery after vasodilation in essential hypertension.

et al. 1988

View full text Add to dashboard Cite

SUMMARYWe performed simultaneous noninvasive measurements of common carotid artery and brachial artery hemodynamics in nine normal subjects and 10 subjects with sustained essential hypertension. In hypertensive subjects, brachial artery blood flow and forearm vascular resistance were in the normal range while carotid artery blood flow and carotid artery resistance were decreased and increased, respectively. The most important findings were the changes in the internal caliber of large arteries. Although the brachial and carotid artery diameters of hypertensive subjects were measured for the same level of mean arterial pressure, brachial artery diameter was significantly increased and carotid artery diameter was strictly normal as compared with values found in normal subjects. To assess whether carotid artery circulation could influence the baroreceptor reflex response to arteriolar vasodilation, carotid artery and brachial artery hemodynamics were measured in immediate succession in normotensive and hypertensive subjects before and after oral administration of cadralazine, a dihydralazine derivative. After cadralazine treatment, carotid artery tangential tension decreased in hypertensive subjects, and the changes were significantly correlated to the Increase in heart rate. A similar correlation was found in normal subjects, but it was reset toward higher heart rates. These results indicate that the carotid artery does not behave like the brachial artery in response to a chronic increase in blood pressure. This behavior indicates intrinsic alterations of the arterial wall and might be involved in the resetting of the carotid baroreceptor reflex. Carotid artery circulation could play a role in hypertension by modulating the carotid baroreceptor mechanisms involved in the response to drug-induced arteriolar vasodilation. Whether these findings represent a primary or a secondary event remains to be determined. (CCA) and the brachial artery (BA) to a chronic elevation of blood pressure may differ according to the regional circulation. Using a noninvasive pulsed Doppler system, we evaluated arterial diameter and blood flow of the straight superficial arteries. We measured simultaneously CCA and BA hemodynamics in normal and hypertensive subjects to assess the effect of essential hypertension on circulation in these arteries.The decrease in blood pressure and vascular resistance observed after treatment with dihydralazine or its derivative, cadralazine, was related to the dilation of small arteries, as has been shown extensively for dihyFrom the Diagnosis Center and the Hypertension Research Center, Broussais Hospital, Paris, France.Address for reprints: Prof. M. Safar, Centre de Diagnostic, H6pi-tal Broussais,

show abstract

“…The renal graft artery diameter and section were accurately measured with the pulsed Doppler device. 24 Cross-sectional blood flow velocity over all of the vessel section was measured after adjustment of the gating pulsed Doppler system, providing highly reproducible flow measurements. Day 0 record of systemic hemodynamic data permitted investigation of the relation between systemic values and renal graft blood flow.…”

Section: Discussionmentioning

confidence: 99%

“…The zero-crossing pulsed Doppler blood flowmeter has been previously described and validated. 24 It is able to measure internal vessel diameter and subsequently calculate the vessel section. Mean and phasic crosssectional blood flow velocities were measured (in cm/s), as well as peak systolic and end diastolic blood flow velocities.…”

Section: Measurement Of Systemic and Renal Parametersmentioning

confidence: 99%

Untitled

Bataille

Payen²,

Villiers³

et al. 2016

Exp Clin Transplant

View full text Add to dashboard Cite

Objectives: The relation between dopamine infusion and renal hemodynamics and function has not been studied in renal allografts during early recovery. We analyzed the dose response of dopamine infusion on renal blood flow and function in human kidney transplant recipients at reperfusion and during early graft recovery. Conclusions: Immediately after transplant, kidney grafts with ischemic-reperfusion injury are fully dilated and do not respond to dopamine. The specific renal effects observed are due to systemic hemodynamic status. Vascular responsiveness to a "renal dopamine dose" returns on graft recovery.

show abstract

Pulsed Doppler: determination of diameter, blood flow velocity, and volumic flow of brachial artery in man

Cited by 125 publications

References 1 publication

Model-based assessment of dynamic arterial blood volume flow from ultrasound measurements

Model-based assessment of dynamic arterial blood volume flow from ultrasound measurements

Hemodynamics of the carotid artery after vasodilation in essential hypertension.

Untitled

Contact Info

Product

Resources

About