Are there any risks or side effects?

There are no known risks from the sound waves used in an ultrasound scan. Unlike some other scans, such as computerised tomography (CT) scans , ultrasound scans don't involve exposure to radiation .

External and internal ultrasound scans don't have any side effects and are generally painless, although you may experience some discomfort as the probe is pressed over your skin or inserted into your body.

If youre having an internal scan and youre allergic to latex, its important to let the sonographer or doctor carrying out the scan know this, so they can use a latex-free probe cover.

Endoscopic ultrasounds can be a bit more uncomfortable and theycan cause temporary side effects, such as a sore throat or bloating. There's also a small risk of more serious complications, such as internal bleeding.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018