Children who need a CT scan may need special instructions for the test. If the child is too young to hold still or is afraid, the doctor may give the child a medicine (sedative) to help him or her relax.
If your child is scheduled for a CT scan, talk with your child's doctor about the need for the scan and the risk of radiation exposure to your child.
Special CT scanners called spiral (helical) CT scanners and multi-slice (or multi-detector) CT scanners are sometimes used for this test. They can find aneurysms or atherosclerosis. These special CT scanners can:
Take better pictures of blood vessels and organs.
Produce scans in less time.
Perfusion CT is a method to look at blood flow in the brain. For this test, a dye (contrast material) is given intravenously (IV), and CT scans then follow the flow of the dye through the brain. This type of CT scan can show damaged areas of the brain. The scans also can show areas of the brain that are not getting any blood flow.