Chapter 1: Description of Radiologic Studies Flashcards
An X-ray exam is a quick and painless exam that produces?
Images of the structures inside the body using high-energy electromagnetic waves.
X-ray passing through the body also pass through an X-ray detector on the other side of the patient forming?
An image on photographic film.
Other types of detectors produce?
Digital images that can upload automatically to the patient’s electronic record.
X-ray beams are absorbed in different amounts depending on?
The density of the tissue they pass through.
How does dense tissues, such as bone show up on X-rays?
White.
How does fat and muscle appear as on X-rays?
Shades of gray.
How does air in the lungs show up as?
Black.
For some types of X-ray exams, a contrast medium (such as iodine or barium) is introduce into the body to?
Provide grater detail of the images.
An enhanced form of X-ray technology that’s used to measure bone loos in?
The spine and hips is Dual-Energy X-ray Absorptiometry or DXA (also known as DEXA).
A DXA scan is a simple, quick, and noninvasive exam that involves?
An extremely low level of radiation.
DXA is the most accurate test for?
Diagnosing osteoporosis.
The DXA scan can also assess an individual’s risk for fractures of?
The lower the bone density, the greater the risk for fractures.
A Screening Mammogram is a type of breast imaging that use?
Low-dose X-rays to detect cancer early when it’s most treatable.
More than any other X-ray, the Mammogram must be?
The highest resolution and contrast.
Radiation therapy must be used?
Alone or in combination with surgery, chemotherapy or both.
