ultrasound - why ?
A few extra units consumed in Mobberley last night by the sound of it !
I'm wondering what's underlying the original question here. Ultrasound is mostly used for diagnostic purposes (as referred to above), when there is known to be something to check or find. Would rarely be used "routinely".
I had annual heart ultrasound checks (echocardiograms) for many years once it was known I had a bicuspid aortic valve. The stenosed valve was replaced with a bovine tissue replacement two years ago, and one of the conditions of having my PPL class 2 medical back is that I continue having echocardiograms annually.