What can ultrasound detect in stomach

An ultrasound scan, sometimes called a sonogram, is a procedure that uses high-frequency sound waves to create an image of part of the inside of the body.

An ultrasound scan can be used to monitor an unborn baby, diagnose a condition, or guide a surgeon during certain procedures.

How ultrasound scans work

A small device called an ultrasound probe is used, which gives off high-frequency sound waves.

You can't hear these sound waves, but when they bounce off different parts of the body, they create "echoes" that are picked up by the probe and turned into a moving image.

This image is displayed on a monitor while the scan is carried out.

Preparing for an ultrasound scan

Before having some types of ultrasound scan, you may be asked to follow certain instructions to help improve the quality of the images produced.

For example, you may be advised to:

• drink water and not go to the toilet until after the scan – this may be needed before a scan of your unborn baby or your pelvic area
• avoid eating or drinking for several hours before the scan – this may be
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