You will be asked to lie on your back to have the scan. You do not need to undress. You will be asked to lift up your top so that the screener can see your abdomen.
The screener will put some clear gel on your abdomen and pass an ultrasound probe over your abdomen.
In order to get a clear image of the aorta, the screener may need to apply some pressure when using the probe.
An image of the aorta is displayed on a monitor. The screener measures the size of the aorta to see if an AAA is present.