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Magnetic resonance imaging (MRI) is a technique that allows doctors
to see inside the body in remarkable detail without using radiation.
Instead, MRI uses a powerful magnet, radio waves, and a sophisticated
computer system to produce pictures of various parts of the body.
Computed tomography (CT) is a special type of x-ray exam that produces
detailed pictures of structures inside the body. CT uses a narrow
x-ray beam to produce a cross-section picture or “slice”
of the area being studied.
Ultrasonography is a technique that uses high frequency sound waves
to produce pictures of various organs and tissues in the body. Much
like sonar, the sound waves bounce off the organs and are converted
into pictures.
Mammography is an x-ray exam that produces images of the internal
structures of the breasts. These images can detect lumps that are
too small to be felt by you or your doctor, as well as abnormal calcifications.
Gastrointestinal exams are special x-rays of the upper and lower digestive
system. Each exam requires the use of a special contrast agent –
usually barium – that coats the digestive tract and makes it
stand out from surrounding body tissues on the x-ray images.
An intravenous pyelogram (IVP) is an x-ray of the urinary tract, which
includes the kidneys, ureters, and bladder. A special dye (or contrast)
is given intravenously to outline these structures, making it possible
to make permanent x-ray images of these organs.
Arthrography is an x-ray procedure which visualizes the internal structures
of a joint. During arthrography, a dye that contains iodine (contrast
material) is injected into the joint.
X-rays are a form of radiation, like light or radio waves, that can
be focused into a beam. Unlike a beam of light, x-rays can pass through
many objects, including the human body. When x-rays strike a piece
of photographic film, they produce a picture.
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