Ultrasound scans for Diagnostic imaging

High-frequency sound waves are used during an ultrasound scan, also known as a sonogram, to produce an image of a portion of the body's interior.

An ultrasound scan can be used to keep track of a developing child, identify a medical issue, or direct a surgeon during specific operations.

An ultrasound works by passing a small device called an ultrasonic probe that emits high-frequency sound waves over an area of the body. Although you can't hear these sound waves, when they reverberate off various body parts, they produce "echoes," which the probe detects and converts into a moving image. While the scan is running, this image is shown on a monitor.

Before you have an ultrasound scan, you may be asked to drink water and not go to the toilet in the days before, to make sure that you have a full bladder, which allows for a more accurate image. 

You may also be asked not to eat in the hours before the ultrasound scan appointment. 

Depending on the area of the body being scanned, you may be asked to wear a gown, which will be provided to you. 

An ultrasound scan usually lasts between 15 and 45 minutes, depending on the area of the body being scanned. The scan will be performed by a radiographer or a sonographer, who will guide you through the procedure and be on hand to answer any questions you may have.