CMA - CH 19 Key Terms - Diagnostic Imaging

Question 1

bone densitometry

Answer 1

a radiographic procedure to measure the mineral concentration and structure of bone. Used primarily to diagnose osteoporosis.

Question 2

cathode

Answer 2

negative electrode from which electrons are emitted.

Question 3

claustrophobia

Answer 3

fear of being confined in any space

Question 4

Doppler

Answer 4

non-invasive technique used with ultrasonography to evaluate blood flow through major arteries and veins of the arms, legs, and neck. It can reveal blood clots or blockages.

Question 5

dosimeter

Answer 5

device for measuring x-ray output

Question 6

echocardiogram

Answer 6

non-invasive diagnostic method that uses ultrasound to visualize internal cardiac structure, including valves.

Question 7

fluoroscope

Answer 7

device consisting of a screen; mounts separately or with an x-ray tube that shows the images of objects interposed between the table and the screen.

Question 8

implantable cardioverter-defibrillator (ICD)

Answer 8

implantable device used for life-threatening arrhythmias. Shocks the heart out of the arrhythmia and into a more normal sinus rhythm.

Question 9

ionizing radiation

Answer 9

X-ray beams

Question 10

isotopes

Answer 10

a chemical element

Question 11

magnetic resonance imaging (MRI)

Answer 11

method of medical imaging that measures the response of tissues to a magnetic field and radio waves resulting in images of tissues and organs of the body.

Question 12

mammogram

Answer 12

Radiographic technique that allows imaging of the breast tissue to evaluate for abnormalities.

Question 13

noninvasive

Answer 13

procedure that does not require penetrating the skin or a body opening.

Question 14

oscilloscope

Answer 14

electronic device used for recording electrical activity of the heart, brain, and muscular tissues

Question 15

osteoporosis

Answer 15

thinning of long bones, pelvic bones, and vertebrae.

Question 16

palliative

Answer 16

refers to measures taken to relieve symptoms of disease.

Question 17

positron emission tomography (PET)

Answer 17

radiographic procedure that uses a computer and a radioactive substance. The substance is injected into the patient’s body and gives off charged particles. They combine with particles in patient’s body to produce color images that reveal the amount of etabolic activity in an organ or structure.

Question 18

radioactive

Answer 18

emits rays or particles from nucleus

Question 19

radiographs

Answer 19

film on which an image is produced through exposure to x-rays

Question 20

radiolucent

Answer 20

allowing x-rays to pass through. A dark area appears on the radiograph.

Question 21

radionuclides

Answer 21

atoms that disintegrate by emitting electromagnetic radiation.

Question 22

radiopaque

Answer 22

impenetrable to x-rays. A light area appears on the radiograph.

Question 23

radiopharmaceuticals

Answer 23

radioactive chemicals used in testing the location, size, outline, or function of tissue, organs, vessels, or body fluids.

Question 24

stomatitis

Answer 24

inflammation of the mouth associated with chemotherapy. Can include swelling, redness, halitosis, and ulcerations.

Question 25

transducer

Answer 25

device that converts one form of energy to another. During an ultrasound procedure, the transducer picks up echoes and converts them to electrical energy; the energy is transformed into digitalized images that can be viewed and printed. Photographs of the image can be taken.

Question 26

X-Ray Patient Position

Answer 26

1. Anteroposterior view: X ray directed from front toward back of body.
2. Posterioanterior view: X ray directred from back to front of body.
3. Lateral view: pass through from one side toopposite side.
4. Right Lateral view: From left to right. (Right side of body next to film)
5. Left lateral view: From right to left (Left side of body next to film)
6. Oblique view: Positioned at an angle
7. Supine view: Body lying face up, on back.
8. Prone view: Body lying face down on abdomen