What Is the Color Doppler Test?

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What Is the Color Doppler Test?
The colour doppler test can help ease a pregnant mother's mind. (the pregnant women in striped vest on white background image by Valentin Mosichev from Fotolia.com)

The colour doppler test is a form of ultrasound testing that is used especially to check blood flow. The test uses sound waves generated and received by a transducer. The sound bounces off moving blood differently than it would bounce off other internal organs. This change in pitch is called the doppler effect. A computer converts the differences in the sound waves into colours.

Cardiovascular Uses

The colour doppler ultrasound is used to check for cardiovascular health. The test can show healthy blood vessels as well as blockages and clots. It is especially useful in diagnosing and treating strokes. The colour overlay of the colour doppler makes it easy for even lay people to see damaged areas.

Uses During Pregnancy

Because it is noninvasive, the colour doppler is useful during pregnancy. The colour rendering of the blood vessels can show the health of an unborn baby without putting the child in any danger.

Advantages of Color Doppler

Colour doppler tests are painless, and other than a small amount of lubricant applied to the transducer, it's clean. The results can be read immediately, which makes this test useful for emergency situations. Finally, because it uses no dyes or medications, this test isn't affected by other treatments.

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