Not exact matches
«These include different types of MRI scans, which
use strong magnetic fields and radio waves to produce detailed
images of the inside of the brain, and Positron Emission Tomography (PET) scans, which
use a small amount of a
radioactive drug, or tracer, to test how tissues in the brain are actually functioning.
The increase in medical radiation exposure (from 0.53 mSv to 3.0 mSv) stemmed primarily from a rise in the
use of computer tomography (CT) scans (which
use x-rays to create cross sectional
images of inside the body to spot tumors, clogged arteries, among other things), and nuclear imaging tests, which involve injecting
radioactive chemicals into the bloodstream that can be picked up by special instruments and
used to create
images of the body's inner structures.
X-ray technology
uses radioactive waves to form
images of the internal make - up of a subject.
Nuclear medicine scans involve injecting a short - acting
radioactive agent into the patient, and
images of the radiation emitted from the patient are recorded
using a gamma camera.