Each year, the US performs more than 93 million computed tomography (CT) scans, many of which offer limited clinical value. For patients with mild head injuries, CT scans are often ordered reflexively ...

The number of head CT scans used during ER visits increased from 7.8 million in 2007 to 16 million between 2007 and 2022, but ...

CT scans offer one way to learn more about the location, size, and shape of a brain aneurysm. A brain aneurysm is a weak or very thin spot on an artery in the brain that bulges out and fills with ...

If a doctor suspects you may have a pulmonary embolism (PE), a CT scan is the gold standard of imaging techniques. This painless scan uses intravenous (IV) contrast, a type of dye, to help the doctor ...

A heart CT scan uses X-rays to create an image of the heart and blood vessels. Healthcare professionals may also refer to it as cardiac CT angiography. A CT scan is a noninvasive imaging procedure.

Radiation is everywhere—in the air we breathe, the water we drink, the walls of our homes and offices, emanating from microwaves, at the dentist, and at the doctor if we break a bone. And we’re told, ...