Doppler ultrasonography

Doppler ultrasoundDopplerduplex ultrasonographyDoppler sonographyduplex ultrasoundultrasoundColor dopplerpower Dopplerblood flowcolor duplex scanning
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.wikipedia
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Portal hypertension

high blood pressure in the portal systemincreased pressures in the portal vein circulationliver condition
This is particularly useful in cardiovascular studies (sonography of the vascular system and heart) and essential in many areas such as determining reverse blood flow in the liver vasculature in portal hypertension.
On Doppler ultrasonography, a slow velocity of

Medical ultrasound

ultrasoundultrasonographymedical ultrasonography
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.
Other types can display blood flow, motion of tissue over time, the location of blood, the presence of specific molecules, the stiffness of tissue, or the anatomy of a three-dimensional region.

Doppler echocardiography

DopplerDoppler signalsDoppler study
Doppler echocardiography is the use of Doppler ultrasonography to examine the heart.
Doppler echocardiography is a procedure that uses Doppler ultrasonography to examine the heart.

Renal ultrasonography

renal ultrasoundKidney ultrasonographyRenal ultrasonograph
Doppler ultrasonography is widely used in renal ultrasonography.
Doppler ultrasonography of the kidney is widely used, and the vessels are easily depicted by the color Doppler technique in order to evaluate perfusion.

Vein

veinsvenousvenous system
Ultrasound, particularly duplex ultrasound, is a common way that veins can be seen.

Cardiac output

Cardiac inputoutputoutput of the heart
Velocity measurements allow assessment of cardiac valve areas and function, any abnormal communications between the left and right side of the heart, any leaking of blood through the valves (valvular regurgitation), calculation of the cardiac output and calculation of E/A ratio (a measure of diastolic dysfunction).
The Ultrasonic Cardiac Output Monitor (USCOM) uses continuous wave Doppler to measure the Doppler flow profile VTI.

Ultrasonography of chronic venous insufficiency of the legs

lower limbs venous ultrasonographyUltrasonography of chronic insufficiency of the legsultrasound
The imaging capability needed, was made possible with the developments of Doppler and color Doppler.

Carotid ultrasonography

Carotid Doppler machinecarotid duplex
A carotid duplex is a carotid ultrasonography carried out by duplex ultrasonography.

Doppler fetal monitor

Doppler VelocimeterDoppler Velocimetrydoptone
Doppler fetal monitors, although usually not technically -graphy but rather sound-generating, use the Doppler effect to detect the fetal heartbeat for prenatal care.
It may be classified as a form of Doppler ultrasonography (although usually not technically -graphy but rather sound-generating).

Ultrasonography of deep vein thrombosis

Ultrasonography of deep venous thrombosisUltrasonography for deep venous thrombosisultrasonography for deep vein thrombosis
Doppler ultrasonography of venous blood flow that correlates with respiration can be diagnostic of the absence of deep vein thrombosis.

Auscultation

auscultatoryauscultateAuscultator
Use of this monitor is sometimes known as Doppler auscultation.
It was demonstrated in the 2000s that Doppler auscultation using an hand-held ultrasound transducer enables the auscultation of valvular movements and blood flow sounds that are undetected during cardiac examination with a stethoscope.

Pinard horn

fetal stethoscopepinard stethoscope
Doppler fetal monitors provide information about the fetus similar to that provided by a fetal stethoscope.

Doppler effect

Doppler shiftDopplerDoppler shifts
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.

Medical imaging

imagingdiagnostic imagingdiagnostic radiology
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe. These modes of medical imaging conduct a spectral analysis of the acoustic signals they receive and can therefore be classified as methods of active acoustocerebrography.

Tissue (biology)

tissuetissuesbiological tissue
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.

Body fluid

bodily fluidbodily fluidsbody fluids
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.

Ultrasonic transducer

ultrasonic sensorultrasonicultrasonic sensors
Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to generate imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe.

Aliasing

aliasaliasedtemporal aliasing
The disadvantage of pulsed Doppler is that the measurements can suffer from aliasing.

Redshift

red shiftzred-shift
Still other laboratories display the Doppler color map in accordance with published data, with red shift representing longer wavelengths (scattered) from blood flowing away from the transducer and blue representing the shorter wavelengths from blood flowing toward the transducer.

Hemodynamics

blood flowhemodynamichaemodynamic
Transcranial Doppler (TCD) and transcranial color Doppler (TCCD) measure the velocity of blood flow through the brain's blood vessels transcranially (through the cranium).

Brain

brain functionmammalian braincerebral
Transcranial Doppler (TCD) and transcranial color Doppler (TCCD) measure the velocity of blood flow through the brain's blood vessels transcranially (through the cranium).

Blood vessel

vascularblood vesselsintravascular
Transcranial Doppler (TCD) and transcranial color Doppler (TCCD) measure the velocity of blood flow through the brain's blood vessels transcranially (through the cranium).

Skull

craniumcranialhuman skull
Transcranial Doppler (TCD) and transcranial color Doppler (TCCD) measure the velocity of blood flow through the brain's blood vessels transcranially (through the cranium).

Acoustocerebrography

These modes of medical imaging conduct a spectral analysis of the acoustic signals they receive and can therefore be classified as methods of active acoustocerebrography.

Medical test

diagnostic testdiagnostic testsdiagnostic testing
They are used as tests to help diagnose emboli, stenosis, vasospasm from a subarachnoid hemorrhage (bleeding from a ruptured aneurysm), and other problems.