Sentences with phrase «wave velocity»

The only feature being affected by the regulatory issue is the pulse wave velocity measurements.

Pulse wave velocity measurements have existed for a while in the medical field, and are generally viewed as a useful measure of arterial stiffness, along with other aspects of cardiac health like hypertension or high blood pressure.

«This is the first time internal wave velocities could be calculated from data acquired during a single overpass of a satellite,» said Roland Romeiser, associate professor of ocean sciences at the UM Rosenstiel School.

«Pulse wave velocity from the aortic arch provides functional information about vessel compliance that may help determine a patient's risk for cerebrovascular disease down the road,» said Kevin S. King, M.D., assistant professor of radiology at UT Southwestern Medical Center in Dallas.

That assertion is consistent with the analysis of wave velocity which shows there must be light elements in the liquid core (roughly 5 %, the liquid is roughly the size of the moon) and theoretical analysis for the liquid core that shows CH4 can «dissolve» in the liquid core and would be extruded when a portion of liquid core solidifies.

Inspired by a 2012 paper that proposed a correlation between such hotspots and the velocity of seismic waves moving through Earth's interior, UC Santa Barbara geochemist Matthew Jackson teamed with the authors of the original paper — Thorsten Becker of the University of Texas at Austin and Jasper Konter of the University of Hawaii — to show that only the hottest hotspots with the slowest wave velocity draw from the primitive reservoir formed early in the planet's history.

When they compared oceanic hotspots with high levels of He - 3 / 4 to seismic wave velocities, they found that these represent the hottest hotspots, with seismic waves that move more slowly than they do in cooler areas.

Based on those measurements, Elgar and Fernanda Hoefel, a graduate student at the Massachusetts Institute of Technology and WHOI, have spent the past few years developing a mathematical model that accounts for changes in wave velocity and predicts sandbar migration.

This fault also shows up in surface - wave maps, but the spatial resolution of the body - wave velocity map was much higher, and revealed new information about the velocity of seismic waves traveling through the fault's surrounding rocks, which in turn provides valuable clues about their composition and organization.

The results showed that aortic arch pulse wave velocity helped predict white matter hyperintensity volume, independent of the other demographic and cardiovascular risk factors.

A recent observational study investigating sex differences in target organ damage, in insulin - resistant patients, demonstrated increased vascular and renal damage in women, who had increased intima - media thickness progression, higher numbers of vascular plaques, and reduced pulse wave velocity compared with men (321).

â $ œIt is known that in other populations, increased pulse wave velocity precedes the development of hypertension, â $ Kim says.

Recently developed, in - situ techniques for direct volume determination, acoustic wave velocity measurements, and x-ray diffraction at HPCAT, along with molecular dynamics simulations, were employed to explore the nature of the unusual and pressure - tunable, compression and elastic properties.

The variables left atrium / aortic root ratio (LA / Ao), peak E wave velocity (E Pvel), mitral A wave and E / A ratio, ratio of MRA / LA, VC, Doppler cardiac index (Doppler CI) and end - systolic volume (ESV) were recorded.

It differed from the company's original smart scale with the addition of the aforementioned pulse wave velocity tech, which measures the rate at which arterial pulse spreads through your arteries.

Prior to the development of this new technology, researchers would have to compare several images taken during multiple satellite overpasses to estimate internal wave velocities.

Considering the Withings Smart Body Analyzer, which does the same body composition measurements, is $ 150, it seems you're paying an extra $ 30 for the pulse wave velocity measurements.

Aortic arch pulse wave velocity, a measure of arterial stiffness, is a strong independent predictor of disease of the vessels that supply blood to the brain, according to a new study published in the June issue the journal Radiology.

Horizons are formed where the local speed of the medium exceeds the wave velocity.

The researchers then measured the effect of flavanols on hallmarks of cardiovascular aging, such as arterial stiffness (as measured by pulse wave velocity), blood pressure and flow - mediated vasodilation (the extent to which blood vessels dilate in response to nitric oxide).

They used the non-invasive, gold standard pulse wave velocity to assess arterial stiffness.

By measuring pulse wave velocity, which is the speed that the arterial pulse propagates through the circulatory system, clinicians are able to determine arterial stiffness.

«When your arteries are more stiff, you have higher pulse wave velocity, which increases your risk of cardiometabolic disease in the future,» says Raed.

These variables are then used in a machine learning model that determines pulse wave velocity (PWV) and, therefore, arterial stiffness.

Dong notes that pulse wave velocity and blood pressure measures are complementary but not interchangeable.

A recently discovered theory shows that the ordering temperature depends on two factors - namely the spin - wave velocity and the staggered magnetisation.

Carotid to radial artery pulse wave velocity and central aortic blood pressures were obtained by applanation tonometry.

The stiffness of the arterial wall can be determined through the pulse wave velocity, which can be measured by use of an applanation tonometer.

The researchers estimated that a one percent increase in aortic arch pulse wave velocity (in meters per second) is related to a 0.3 percent increase in subsequent white matter hyperintensity volume (in milliliters) when all other variables are constant.

«Our results demonstrate that aortic arch pulse wave velocity is a highly significant independent predictor of subsequent white matter hyperintensity volume and provides a distinct contribution — along with systolic blood pressure, hypertension treatment, congestive heart failure and age — in predicting risk for cerebrovascular disease,» Dr. King said.

Aortic arch pulse wave velocity was measured with phase - contrast magnetic resonance imaging (MRI).

Dr. King and colleagues set out to evaluate the relationship between aortic arch pulse wave velocity and subsequent cerebral microvascular disease, independent of other cardiovascular risk factors, among 1,270 participants in the multiethnic Dallas Heart Study.

The scans create images of seismic - wave velocity, which is largely controlled by temperature.

However, the football players displayed significantly higher pulse wave velocity, a measure of arterial stiffness (football: 6.5 vs control: 5.7).

Brachial - ankle pulse wave velocity (baPWV), blood pressure, heart rate, and plasma nitric oxide (NO) concentration were measured before and 30 minutes after both SMR and CON trials.

17 Salvi P, Lio G, Labat C, Ricci E, Pannier B, Benetos A. Validation of a new non-invasive portable tonometer for determining arterial pressure wave and pulse wave velocity: the Pulse Pen device.

Update January 22nd, 2:35 pm: Nokia has clarified that the removal of pulse wave velocity measurements was not prompted by the FDA, but rather a proactive choice by the company after discovering that the pulse wave velocity measurements may prevent the Body Cardio scale from falling under the «wellness device» exemptions in some jurisdictions.

Brachial - ankle pulse wave velocity is an independent predictor of incident hypertension in Japanese normotensive male subjects.

It can detect your pulse wave velocity, which is the speed at which blood circulates in your body and which seemingly provides a glimpse of your heart health.

University of Stanford spinout PhysioWave received FDA clearance for its pulse wave velocity (PWV) cardiovascular analyzer scale, which measures the stiffness of the vessels transporting blood from the heart to the body.

If you're looking for more metrics, Withings does offer a more advanced scale, the Body Cardio Scale, which measures pulse wave velocity.

Dr. Grimes said: «The future will see more use made of sensor technology in smartphones, expanding the range of devices that will not only offer heart rate sensing, but heart rate variability, rhythm detection, and other important measurements like pulse wave velocity, oxygen saturation and respiratory rate.

Its newest scale, the Body Cardio, keeps the former, does away with the latter, and adds a new metric: pulse wave velocity.

For those who aren't aware of what pulse wave velocity is, which is probably most — neither was I when I first picked up the Withings Scale — Pulse Wave Velocity, or PWV for short, is the measurement of the flow of blood through the arterial tree.

The new scale includes all the same features but adds body water percentage, integrated rechargeable batteries, and pulse wave velocity (more on the last one later on in the review).

Withings» Body Cardio scale measures your weight, body fat percentage, heart rate, and even pulse wave velocity, and sends the data to an app.

For example, its recently - released Body Cardio scale not only measure users» weight, body fat percentage, heart rate and other metrics, and send them wirelessly to an app, it also records pulse wave velocity, a measurement more familiar to doctors than consumers.

If you're looking to be heart smart, the Body Cardio also provides a detailed picture of your heart health, reading your heart rate, and measuring your pulse wave velocity, which is used to determine arterial stiffness.