SEVEN patients, two of whom are critically ill, have been infected with a contaminated gel during NHS procedures. The ...

Ultrasound imaging (also called sonography ... Just before the test, a thin layer of gel is applied to the skin on the front of the throat. This may feel a little cold at first.

If the imaging is done while you are being treated at a hospital, it is referred to as a point-of-care ultrasound (POCUS). In addition to the ultrasound device, the procedure involves a clear gel ...