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What is Color Doppler flow image?
A Doppler image can be taken of any bodily organ or even of an unborn baby if needed. The color flow image means that instead of being in black and white the image will show up in color.
What kind of waves are used in a Doppler machine?
Doppler machines use ultrasound waves to measure the velocity of blood flow in the body. These waves are high-frequency sound waves that bounce off tissues and blood cells to create Doppler images that show the movement and speed of blood flow in real time.
What are normal results of a Doppler ultrasonography?
Normal results of a Doppler ultrasonography - also known as a vascular ultrasound - show normal blood flow with no restrictions, blockages, or abnormal flow patterns in the arteries and veins being examined. The report would typically mention the presence of good blood flow velocity and consistency throughout the vessel.
What characteristics does an abnormal transcranial Doppler ultrasonography have?
Lack of flow indicates a vessel has been completely blocked (although absence of a signal may also be due to absorption of sound waves by bone). If blood flows in the wrong direction or alternates between normal and reverse flow.
What does the Doppler radar show?
speed of movement of the objects detected.
Why would a passing race car display more Doppler effect than a passing police siren?
The amount of Doppler shift depends on speed - the faster vehicle will show more Doppler shift.
Why use the Thyroid Uptake and scan on the thyroid?
Because the results of the uptake will determine whether you will need surgery to remove your thyroid glands.
Do light wave show the Doppler effect?
Yes, light waves show the Doppler effect. This is commonly observed as a shift in the wavelength of light from a moving source, similar to the change in pitch of a siren as it approaches and then moves away from an observer.
Why do stars near the north celestial pole show the greates Doppler shifts due to earths revolution?
I don't think they do. I would expect them to have among the smallest Doppler effect.
Does Thyroid blood tests shows HIV in the test results?
No, thyroid blood tests do not show HIV in the test results. HIV testing is a separate test that specifically looks for the presence of the HIV virus in the blood. Thyroid blood tests measure levels of thyroid hormones to assess thyroid function.
What is difference between ultra sound and colour Doppler?
Ultra sound is just a name for soundwaves of a certain frequency. Doppler is a phenomena where wavelengths change depending on the movement of the object that the wave has bounced off from. By signal processing you can give different colours to objects that move differently wrt the sound source.
Will a pregnancy test show that a person with an under active thyroid having a thyroid which produces low amounts of hormone is pregnant?
Yes, the hormone that a pregnancy test requires to be deemed positive, hCG is produced by the placenta and not the thyroid.
