Vascular blood flow velocity. Medical search. Frequent questions

To optimize study design and data interpretation, there is a need to understand the reliability of Doppler ultrasound-derived measures of blood velocity (BV) measured in the renal and segmental arteries. (cdc.gov)
Evans et al demonstrated a significant change in several Doppler velocity measures in the MCA, including systolic, diastolic, and mean velocity, pulsatility index and velocity time integral, during days 1 and 2 after birth in a cohort of preterm infants. (bmj.com)
Stroke Distance is a Doppler flow-based parameter only. (deltexmedical.com)
Stroke Volume can be calculated as a Doppler Flow Based Parameter by CardioQ-EDM and CardioQ-EDM+. (deltexmedical.com)
The CardioQ-EDM and CardioQ-EDM+ can calculate Cardiac Output in Doppler flow mode. (deltexmedical.com)
Peak Velocity is a Doppler only parameter and is available on both the CardioQ-EDM and CardioQ-EDM+ as the maximal velocity of the blood. (deltexmedical.com)
Flow Time corrected is a Doppler only parameter and is available on both the CardioQ-EDM and CardioQ-EDM+. (deltexmedical.com)
Additionally, Doppler imaging allows us to evaluate blood flow, including direction and velocity. (vin.com)
Ascending aorta and brachial artery mean blood flow velocities (pulsed Doppler ultrasound) and brachial artery blood pressure (Finometer) were continuously measured during handgrip and pharmacological protocols. (uwo.ca)
A dual-beam two-dimensional vector Doppler technique was developed to visualise and quantify vortical structures downstream of each graft outflow in the cross-flow direction. (dundee.ac.uk)
Doppler Vascular Detector ARV-650 offers a full-featured ABI/vascular system for the diagnosis of peripheral arterial disease (P.A.D.) that is fast, efficient. (apicalmed.com)
The transcranial Doppler is able to identify blocked blood vessels. (hollycarpenterblog.com)
This non-invasive procedure uses doppler and ultrasound to determine the volume and flow rate of vessels. (hollycarpenterblog.com)
Color-Doppler ultrasonography is used to measure flow or velocity of blood in the main renal artery. (medscape.com)
[ 6 ] Color-Doppler flow studies in the renal artery are highly operator-dependent. (medscape.com)
Power Doppler image shows hyperemic blood flow in the flexor tendon sheath in a patient with rheumatoid arthritis of the hands. (medscape.com)

The speed of travel of this pulse wave (pulse wave velocity (PWV)) is related to the stiffness of the arteries. (wikipedia.org)
This function depends on the elasticity of the arteries and stiffened arteries require a greater amount of force to permit them to accommodate the volume of blood ejected from the heart (stroke volume). (wikipedia.org)
The vascular endothelium modulates contractile responses to 5-HT and ET-1 in human subcutaneous resistance arteries but this effect is lost in patients with NPG, indicating a selective defect in agonist mediated release of endothelium derived vasodilators. (bmj.com)
Functional abnormalities, including reduced blood flow velocity and increased resistance in a number of ocular arteries, have been demonstrated within the ophthalmic circulation of patients with NPG. (bmj.com)
The mechanisms of vascular dysfunction have been investigated in a number of conditions, including hypertension 13 and diabetes, 14 using subcutaneous arteries isolated from biopsies of gluteal fat. (bmj.com)
This approach has the advantage of studying vascular dysfunction directly in arteries from patients (rather than animal models) and uses resistance arteries which contribute significantly to maintenance of blood pressure. (bmj.com)
This is the first known work on the mechanics of flows in elastic tubes, in which Euler applied his equations to analyze the flow of blood through arteries, driven by a piston pump simulating the heart. (scirp.org)
In fact, although in the introduction to the problem (paragraphs 1-8), Euler focuses on the discussion on blood flow through arteries, to such a degree to even proposing adhoc models for the behavior of their elastic cross-sections, surprisingly, and also somehow disappointing, is that the main body of the manuscript (paragraphs 9-34) is devoted to the modeling of flows through rigid tubes, driven by a piston pump. (scirp.org)
Giovanni Borelli (1608-1679), which is seen by many as the father of bioengineering, studied the contraction of the heart and its interaction with the arteries, where he understood the capacitive effect of the elastic arteries on smoothing the flow of blood (now known as the Windkessel effect to be later discussed). (scirp.org)
Does smooth muscle controls blood flow through arteries and veins and controls blood pressure? (onteenstoday.com)
Blood pressure is related to the blood velocity in the arteries and arterioles. (onteenstoday.com)
How does the smooth muscle in the wall of muscular arteries help to maintain blood pressure? (onteenstoday.com)
In arteries, the tunica media, which contains smooth muscle cells and elastic tissue, is thicker than that of veins so it can modulate vessel caliber and thus control and maintain blood pressure. (onteenstoday.com)
Peak systolic, end diastolic and mean velocities of nine main intracranial arteries were determined using TCD. (biomedcentral.com)
Mean blood flow velocity in middle, anterior and posterior cerebral arteries, vertebral and basilar arteries was 60 ± 8, 52 ± 9, 42 ± 6, 39 ± 8 and 48 ± 8 cm/sec respectively. (biomedcentral.com)
Its high sensitivity allows it to measure flow in arteries that are more than 75 mm wide. (hollycarpenterblog.com)
The diagnostic and prognostic information available from captopril renography and the increasing availability of magnetic resonance angiography (MRA) have reduced the use of renal arteriography as a diagnostic tool, except in evaluating kidneys with intrarenal branch-artery stenoses and those with complex vascular anatomy, including multiple accessory arteries. (medscape.com)
[ 14 ] Recent evidence confirms that GLP-1 exerts a potent vasodilatory effect on the conduit and resistance arteries as well as terminal arterioles to significantly increase total muscle blood flow and muscle microvascular perfusion in rats and in healthy humans. (medscape.com)

Carotid-femoral pulse wave velocity (PWV) was evaluated by Applanation tonometry (SphygmoCor) and the aortic pressure waveform was used to calculate the Augmentation index (Aix). (nih.gov)

We aimed to study the relationship between serum uric acid levels and leg vascular resistance in patients with CHF with and without cachexia and in healthy control subjects. (nih.gov)
In 23 cachectic and 44 noncachectic patients with CHF (age, 62 +/- 1 years, mean +/- SEM) and 10 healthy control subjects (age, 68 +/- 1 years), we assessed leg resting and postischemic peak vascular resistance (calculated from mean blood pressure and leg blood flow by venous occlusion plethysmography). (nih.gov)
Hyperuricemia and postischemic leg vascular resistance are highest in cachectic patients with CHF, and both are directly related independent of diuretic dose and kidney function. (nih.gov)

9 Impaired systemic vascular function has been demonstrated in patients with NPG in whom blood flow in the fingers is reduced 10, 11 (both under basal conditions and following cold provocation) and endothelium dependent vasodilatation in the forearm is impaired. (bmj.com)
PURPOSE: Vascular endothelium plays a central role in the pathogenesis of acute and chronic radiation injuries, yet the mechanisms which promote sustained endothelial dysfunction and contribute to late responding organ failure are unclear. (bvsalud.org)
[ 15-20 ] This is not surprising, because GLP-1 receptors are abundantly expressed in the vascular endothelium. (medscape.com)

The relationship between arterial stiffness and pulse wave velocity was first predicted by Thomas Young in his Croonian Lecture of 1808 but is generally described by the Moens-Korteweg equation or the Bramwell-Hill equation. (wikipedia.org)
Devices are on the market that measure arterial stiffness parameters (augmentation index, pulse wave velocity). (wikipedia.org)
The increase in pulse pressure may result in increased damage to blood vessels in target organs such as the brain or kidneys. (wikipedia.org)
If the aorta approximates to a cylindrical pipe then the SD can be represented a series of cylinders of blood moving down the aorta as each pulse of the left ventricle propels them into the bodies arterial system. (deltexmedical.com)
Aims: Carotid-femoral pulse wave velocity (PWV), a direct measure of aortic stiffness, has become increasingly important for total cardiovascular (CV) risk estimation. (kcl.ac.uk)
At baseline, AC S674 carriers have decreased systemic vascular conductance and forearm vascular bed compliance, as well as increased pulse pressure. (uwo.ca)
Chronic elevation in vascular contractile state may result in vascular stiffening and enhanced pulse pressures with detrimental long-term consequences for cardiovascular health. (uwo.ca)
Pulse wave velocity test. (thebalancingpoint.net)
Each subject was provided with an upper arm blood pressure monitor and a finger clip that measures pulse wave velocity (PWV). (frontiersin.org)
and pulse wave velocity (PWV) were measured. (medscape.com)

We report a patient with FHVs reflecting slow intracranial blood flow due to severe heart failure. (hindawi.com)
Hemodynamics have been shown to play an important role in the initiation and progress of intracranial aneurysms, and are considered well-related to vascular configuration. (ajnr.org)
The purpose of this study was to quantify the vascular geometry change due to intracranial stent placement and to discuss its potential effects on hemodynamics. (ajnr.org)
The current objectives were to quantify the vascular angle changes due to intracranial stent placement and discuss the stent-associated effects on hemodynamics. (ajnr.org)

12 The relatively small number of studies to have assessed vascular reactivity and blood flow in the systemic circulation of these patients, however, prevents identification of the mechanisms underlying these abnormalities. (bmj.com)

The overall mixed model analysis showed that CF significantly decreased 12-h systolic blood pressure and PWV by −1.4 ± 0.3 mmHg and −0.11 ± 0.03 m/s, respectively. (frontiersin.org)

The average of the maximum velocity (MV), peak systolic velocity (PV), end diastolic velocity (EDV) and pulsatility index (PI) were automatically calculated and recorded. (biomedcentral.com)

It has been proposed that vascular dysfunction contributes to the pathogenesis of glaucoma and, in particular, NPG as this condition is associated with the presence of widespread cerebrovascular and systemic cardiovascular disease. (bmj.com)
It is well known that the modern understanding of the cardiovascular system undoubtedly starts with the work of William Harvey (1578-1657) who published his discovery of the circulation of blood in 1628. (scirp.org)
Single spiral flow is a normal feature in medium and large sized vessels and it is induced by the anatomical structure and physiological function of the cardiovascular system. (dundee.ac.uk)
In this study, comprehensive magnetic resonance imaging approaches with both structural and blood flow imaging were used to characterize the white matter hyperintensity in the brain, cerebral blood flow, and obstruction of vertebral artery caused by stenosis in various cases of individuals with cerebral vascular and cardiovascular risks. (hilarispublisher.com)
The comprehensive MRI protocol with functional and high resolution structural imaging sequences is capable of providing valuable information on blood flow supply in the vertebral artery and cerebrovascular ischemia in individuals having vertebral and cardiovascular abnormalities. (hilarispublisher.com)
Microcirculation is usually very smooth, but by high blood lipids, blood viscosity, erythrocyte aggregation, affect cardiovascular disease and other factors, microcirculation appears white tiny blood clots, which with the blood flow in the body. (nail-fold-capillaroscopy.com)

The principle of endovascular embolization is occlusion of the pathological blood vessels of the underlying vascular malformation using a microcatheter, which is selectively positioned within or proximal to the pathology, by injection of an occlusive substance into these vessels. (springer.com)

In this work, spiral peripheral vascular and arteriovenous grafts were compared with conventional grafts using ultrasound and computational methods to identify their haemodynamic differences. (dundee.ac.uk)
This study applied ultrasound and computational methods to vascular-graft phantoms in order to characterise the flow field induced by spiral and conventional peripheral vascular and arteriovenous grafts. (dundee.ac.uk)
These findings suggest that the frequency of the harmonic sound is related to the velocity of microemboli that traverse the ultrasound beam, and that the velocity of microemboli and duration of MESs are inversely correlated. (go.jp)
This narrative review describes the main applications of de la ultrasonografía en ultrasound in anesthesia, ultrasound-guided techniques, and current trends in the perioperative anesthetic management of anestesia the surgical patient. (bvsalud.org)
In anesthesiology, rapid and accurate the main applications of ultrasound in anes- diagnostic tools are for surgical emergen- thesia as airway evaluation, vascular access, cies, and ultrasound has become a neces- regional anesthesia, pulmonary ultrasound, sary and routine tool2. (bvsalud.org)

thus, fluctuations in cerebral blood pressure and flow can rupture the primitive germinal matrix vessels or lead to infarction of the metabolically active germinal matrix. (medscape.com)
As well as glucose, galactose is also absorbed in the intestine to reach the blood vessels. (researchgate.net)
Thus the main function of vascular smooth muscle tone is to regulate the caliber of the blood vessels in the body. (onteenstoday.com)
Blood flow through the body is regulated by the size of blood vessels, by the action of smooth muscle, by one-way valves, and by the fluid pressure of the blood itself. (onteenstoday.com)
Which blood vessels have smooth muscle and can be controlled by the nervous system? (onteenstoday.com)
Smooth muscle is present in the blood vessels. (onteenstoday.com)
icrocirculation is the circulation of the blood in the smallest blood vessels,present in the vasculature embedded within organ tissues. (nail-fold-capillaroscopy.com)

It is primarily used to detect renal vascular occlusive disease. (medscape.com)
Decreased portal vein flow velocity and reversal of the flow direction is seen in the terminal stage of hepatic cirrhosis and a few other conditions such as hepatic sinusoidal obstruction (hepatic veno-occlusive disease), arterioportal fistula, extrahepatic portal vein thrombosis, and hepatic venous outflow obstruction ( 6 ). (cdc.gov)

Meanwhile, health groups and immunocompromised people are mainly in the microcirculation, lack of microvascular perfusion, vascular blurred, slow blood flow. (nail-fold-capillaroscopy.com)

Upregulated xanthine oxidase activity (through production of toxic free radicals) may contribute to impaired regulation of vascular tone in CHF. (nih.gov)

In the conventional LDF approach, the key measured parameters, index of microcirculation and perfusion rate, are proportional to an averaged concentration of red blood cells (RBC) and their average velocity within a diagnostic volume. (oulu.fi)

The Nailfold Capillaroscopy Microcirculation Microscope is an advance medical photoelectric apparatus,equipped with built in special LED light source,used mainly in observation on human nail fold capillary microcirculation or term as video Nailfold capillaroscopy,Such as capillary blood flow, abnormal microcirculation of the vascular structure, cell adhesion, through its powerful 380X（or 240X）optical magnification. (nail-fold-capillaroscopy.com)
A human clinical study examined the ability of Astaxanthin to improve retinal capillary blood flow. (neubria.com)
After four weeks it was found that the Astaxanthin group had improved retinal capillary blood flow as compared to the placebo group (14). (neubria.com)

detect the blood flow average velocity, detect the result of finger/toes and part of body's vein on operation. (apicalmed.com)
Detect the blood stream status of arterial/venous by 8.0MHz, detect the blood flow average velocity, and detect the result of finger/toes and part of body's vein anatomies operation. (apicalmed.com)
ARV-620V TFT LCD displays the wave of the instant blood flow average velocity and strength. (apicalmed.com)

The peak velocity of 20 year old may be 90 - 120 cm/s whereas at age 90 it may only be 30 - 60 cm/s. (deltexmedical.com)

GLP-1 and insulin increased brachial artery diameter and blood flow, but this effect was not additive. (medscape.com)

The first broadly used copolymer-based embolic agent Onyx benefits from a large amount of available experience and data, which demonstrated its safety and efficacy in the treatment of cerebral vascular malformations, while its drawbacks include temporary loss of visibility during longer injections and artifacts in cross-sectional imaging. (springer.com)
LEAs that are available for the embolization of cerebral vascular malformations can basically be divided into two groups: cyanoacrylates or adhesive embolic agents, which have a glue-like behavior (colloquially they are often named glue) and copolymers or nonadhesive embolic agents, which are described to feature lava-like or rubber-like characteristics. (springer.com)
It is demonstrated that vertebral artery stenosis characterized as vertebral artery narrowing and/or reduced blood flow velocity by MRI may be associated with the regional specific cerebral vascular comorbidities detected as white matter hyperintensity and reduction of cerebral blood flow. (hilarispublisher.com)

These findings support the current practice of measuring renal and segmental artery blood velocity over three cardiac cycles. (cdc.gov)
Cardiac Output is the volume of blood being pumped by the left ventricle in the time interval of one minute. (deltexmedical.com)

In direct CCF, internal carotid artery (ICA) wall disruption allows high-pressure blood to move into the CS, resulting in short-circuiting of the ICA arterial blood into the venous system of the CS. (biomedcentral.com)

Patients with vEDS regularly followed in the French National Reference Centre for rare vascular diseases between 2000 and 2017 were included in this retrospective cohort study. (biomedcentral.com)
These diseases are caused by pathological changes of normal parts with an influence of blood flow, and although the diseases would be fatal in many cases depending on their growth stages, it is extremely difficult to treat them because such a treatment may risk the patient's life span. (justia.com)
The results obtained show that the developed approach of LDF signal decomposition provides essential new information about blood flow and blood microcirculation and has great potential in the diagnosis of vascular complications associated with various diseases. (oulu.fi)

The patient's blood pressure increased to 130/90 mm Hg after the initial fluid resuscitation (28 mL/kg free flow), and systolic pressure remained at ≈130 mm Hg until transfer. (cdc.gov)

Blood pressure control and conservative management for ischemic hepatitis were performed. (hindawi.com)
The initial blood pressure was 95/55 mmHg. (hindawi.com)
Aim: Vascular risk factors, and particularly vasospasm, are thought to play a part in the pathogenesis of normal pressure glaucoma (NPG). (bmj.com)
Conclusions: This study has identified dysfunction of the systemic vascular endothelial cell in patients with normal pressure glaucoma. (bmj.com)
Cuffless blood pressure (BP) estimation devices are receiving considerable attention as tools for improving the management of hypertension, a condition that affects 1.13 billion people worldwide. (uwaterloo.ca)
IPC systems apply external pressure to the circumference of the leg to enhance blood velocity (BV). (uwaterloo.ca)
How does smooth muscle affect blood pressure? (onteenstoday.com)
Excessive vasoconstriction leads to high blood pressure, while excessive vasodilation as in shock leads to low blood pressure. (onteenstoday.com)
We and others have identified functional MR in human vascular smooth muscle cells (SMCs), suggesting that vascular MR might directly regulate blood pressure. (onteenstoday.com)
What are the two main ways your body controls blood pressure? (onteenstoday.com)
Background: The rapid reduction in arterial pressure (AP) during VVS is associated with a decline in diastolic cerebral blood velocity (CBV) and maintained systolic CBV. (uwo.ca)
High blood pressure readings and white coat hypertension. (thebalancingpoint.net)
Controlled clinical intervention studies have demonstrated that cocoa flavanols (CF) can decrease blood pressure and arterial stiffness in healthy humans, although a large variability in the effect size across trials has been reported. (frontiersin.org)
In this study, we evaluated the intra- and inter-individual variability of responses to CF in everyday life using a series of n-of-1 trials in healthy free-living individuals with normal blood pressure carrying personal devices. (frontiersin.org)
Measurements of blood pressure, heart rate, and PWV were taken at least hourly over 12 h during the day by the participants. (frontiersin.org)
Effect sizes inversely correlated with baseline blood pressure values both between- and within-subjects. (frontiersin.org)
The data confirm that cocoa can decrease blood pressure and arterial stiffness in everyday life when elevated within the normal range. (frontiersin.org)
Dietary intervention studies with flavanol and procyanidin-containing foods support this notion, as the consumption of these foods improves arterial endothelial function while lowering blood pressure and arterial stiffness in healthy subjects ( 8 - 10 ). (frontiersin.org)
For this reason, there have been research conducted on methods for diagnosing a cerebral aneurysm based on its size and shape, the family record, the blood pressure, and the habit of cigarette smoking, and other factors of the patient. (justia.com)
Increased flow velocity may be associated with a younger age, anemia, severely increased blood pressure, hypermetabolic states such as hyperthyroidism and anemia, increased carbon dioxide tension or some drugs such as an acetazolamid and mannitol. (biomedcentral.com)
This type of imaging reveals the velocity and pressure of cerebral blood flow. (hollycarpenterblog.com)
Fever subsided on the day of admission, but the patient was in shock (blood pressure 80/40 mm Hg) and had gastrointestinal bleeding and hematuria. (cdc.gov)
Despite stable blood pressure over the next 6 days, liver enzymes continued to rise with progressive jaundice ( Technical Appendix ). (cdc.gov)

This study also demonstrates that there is excellent day-to-day reliability for measures of renal artery blood velocity, which supports reporting absolute values of renal artery blood velocity across days. (cdc.gov)

Due to some geographic variations, it is good for each medical center to detect normal blood flow velocity values for the regional population which in turn can help in better interpretation of TCD results. (biomedcentral.com)
This type of imaging is used to diagnose focal vascular stasis and detect embolic signs. (hollycarpenterblog.com)

Stroke Volume is the amount of blood pumped from the human heart every heart beat, in millilitres. (deltexmedical.com)

Cocoa flavanols protect humans against vascular disease, as evidenced by improvements in peripheral endothelial function, likely through nitric oxide signalling. (nature.com)

A historical review on the subject (Parker, 2009) indicates that before Euler, other investigators had already been concerned with blood circulation. (scirp.org)
This contrasts with macrocirculation, which is the circulation of blood to and from the organs. (nail-fold-capillaroscopy.com)

More specifically, the present invention relates to a system for determining a possible appearance of lesion in a target vascular site and its potential growth based upon a diagnostic result of the blood flow characteristics of the targeted blood vessel, and furthermore, and predicting the effect of treatment, the method of thereof, and computer software program. (justia.com)

Peripheral vascular grafts are used for the treatment of peripheral arterial disease and arteriovenous grafts for vascular access in end stage renal disease. (dundee.ac.uk)

Hepatic ultrasonograph on the second day after admission showed totally reversed direction of portal venous blood flow away from the liver ( Figure , panel A), becoming bidirectional on the following day and, finally, reverting to normal direction (although with low velocity) 3 days later ( Figure , panel B). Despite improved hemodynamic status, progressive encephalopathy and gastrointestinal bleeding developed and were unresponsive to treatment. (cdc.gov)

It is conceivable that NPG is associated with a generalised vascular defect which produces alterations in both the ocular and systemic circulations. (bmj.com)

Therefore, Euler's pioneering and seminal work in the area of blood flow justifies he be called the father of hemodynamics. (scirp.org)

Most modifiable vascular risk factors for ICAS appeared to exert similar magnitudes of risk for PC to AC lesions. (hindawi.com)

The computational assessments provided a three-dimensional velocity field in the lumen of the models allowing a range of fluid dynamic parameters to be predicted. (dundee.ac.uk)

It can also be used for assessing the physiological health of specific vascular territories. (hollycarpenterblog.com)

These data support the hypothesis that similar vascular mechanisms underlie both the peripheral and cerebral effects of flavanols. (nature.com)

In the current paper we introduce a new signal processing approach for the decomposition of LDF power spectra in terms of ranging blood flow distribution by frequency series. (oulu.fi)

Microcirculation is composed of terminalarterioles, capillaries capillaries and venules which drain capillary blood. (nail-fold-capillaroscopy.com)
For insulin to exert its metabolic effects in muscle and for nutrients to be used by the myocytes, insulin and nutrients first have to be delivered to the capillaries bathing the myocytes and then transported through the vascular wall to reach muscle interstitium. (medscape.com)

In addition, we observed vascular responses that apparently were confined to single glomeruli. (jneurosci.org)
Furthermore, we also demonstrate that glutamatergic synaptic transmission and rises in dendritic intracellular calcium ([Ca 2+ ] i ) are required to trigger blood flow responses. (jneurosci.org)

We show that RBC flow and local neuronal activity uncouple with repetitive stimulation and local blockade of glutamatergic synaptic transmission. (jneurosci.org)

The position of the adrenal glands in relation to regional vasculature is very consistent, making vascular landmarks quite helpful for identification of adrenal glands. (vin.com)

More specifically, unilateral vertebral artery stenosis led to asymmetric periventricular WMHs, while bilateral vertebral artery with lower blood flow led to symmetric periventricular WMHs. (hilarispublisher.com)

Vascular EDS is characterized by connective tissue fragility leading to life-threatening complications in seemingly healthy young adults. (biomedcentral.com)

Simply insert the finger to the holder below the optical lens apparatus, fine-tune to fix the focal length and uncover the desired images within seconds.Blood capilliary microcirculation microscope is a non-invasive diagnostic tools, which is gaining large credit among physicians of different specialities in for study of skin blood capilliary network. (nail-fold-capillaroscopy.com)

Anatomy52

Organisms2

Diseases36

Chemicals and Drugs25

Analytical, Diagnostic and Therapeutic Techniques and Equipment78

Psychiatry and Psychology1

Phenomena and Processes64

Disciplines and Occupations2

Anthropology, Education, Sociology and Social Phenomena2

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Named Groups3

Health Care17

Doppler16

Arteries18

Waveform1

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Endothelium3

Pulse10

Intracranial4

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Pulsatility index1

Cardiovascular6

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Ultrasound5

Vessels7

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Microvascular perfusion1

Regulation of vascular1

Perfusion1

Capillary blood flow3

Average velocity3

Peak1

Brachial1

Cerebral vascular3

Cardiac2

Venous system1

Diseases3

Patient's1

Pressure23

Renal artery1

Detect2

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Humans1

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