A computed tomography scan or CT scan uses X-rays ... You may get a shot of "contrast material" into one of your veins, which will help doctors see parts of your brain more clearly on the image.

The fair price would be about $557 for a brain CT with and without contrast or around $291 for a CT scan needed for a needle biopsy in the California area, according to Healthcare Bluebook.

Hounsfield called this technology a CT (computerized tomography) scan, also called a CAT scan (computerized axial tomography). It was especially useful for looking at head injuries and brain ...

What are the typical radiation doses associated with CT examinations? CT scans of the head, for example ... should be kept as low as reasonably achievable (the ALARA principle) without compromising ...

Exposure to radiation from head or neck CT imaging increased risk for childhood brain tumors, according to results of a ...