What is Ultrasound?

Ultrasound is an oscillating sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from 'normal' (audible) sound by differences in physical properties, only by the fact that humans cannot hear it. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.

Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasonic imaging (sonography) is used in both veterinary medicine and human medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning and for mixing, and to accelerate chemical processes. Animals such as bats and porpoises use ultrasound for locating prey and obstacles.

Ultrasonics is the application of ultrasound. Ultrasound can be used for medical imaging, detection, measurement and cleaning. At higher power levels, ultrasonics is useful for changing the chemical properties of substances.

Questions and answers on "Ultrasound"

Hello, I just find out that I might have an endometrial polyp after an ultrasound , I had heavy period for 5weeks it's just stop 2 days ago. I've...

doctor1 MD

The polyp itself wont create any problem in conception.But you should get it removed surgically if there is heavy bleeding.Repeat the ultrasound...

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I had a missed miscarriage on Monday morning in the early a.m. I was 8 weeks along but the sac was only measuring 6 weeks. I passed some tissue and...

doctor1 MD

Hello, I would be happy to help you.

First of all, it sounds like you miscarried completely based solely on the ultrasound which showed nothing in...

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I have gone through Ultrasound test on 21.11.2013.
Test Impression as follows:

Mild hepatomegaly with fatty infiltration..
Bileteral renal...

doctor1 MD

Thanks for writing in to us.

I will explain your ultrasound findings in detail.

1. Mild hepatomegaly and fatty infiltration:

There is mild...

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