Intro to Radiology

Question 1

The use of radiant energy (ionizing & non-ionizing) in the diagnosis and treatment of diseases of the head and neck; interpretation of the image you’re making

Answer 1

Radiology

Question 2

The taking of images of the teeth and maxillofacial areas

Answer 2

dental radiography

Question 3

The art and science of photographically recording images of the teeth and their surrounding structures through the use of x-radiation or other forms of radiant energy

Answer 3

radiography

Question 4

a shadow picture produced by projecting the images of the teeth and their supporting tissues onto an image receptor of some type

Answer 4

Radiograph

Question 5

image receptor placed inside the mouth

Answer 5

intraoral radiography

Question 6

image receptor placed outside the mouth

Answer 6

extraoral radiography

Question 7

primarily used to rule out
- endodontic problems (root canals)
-periodontal problems (gums)
Not as accurate as bitewings; often angled, which creates distortion; only 1 arch visible

Answer 7

Periapical

Question 8

most accurate view for caries detection, periodontal crestal bone height; low distortion because film is held straight between teeth

Answer 8

Bitewing

Question 9

FMX Exams

Answer 9

20 images total
12 #2 images (posterior, horizontal)
- 4 molar periapicals*
-4 premolar periapicals*
-4 bitewing radiographs

8 #1 images (anterior, vertical)

• 5 maxillary periapicals
• 3 mandibular periapicals

Question 10

Extraoral imaging

Answer 10

sensor outside the mouth

• panoramic imaging
• cephalometric imaging
• cone beam CT imaging

Question 11

Shows entire jaws, not just teeth; some distortions are present in order to do this
Great for treatment planning; more comfortable for patients

Answer 11

Panoramic

Question 12

White to light grey; does not let the x-ray pass through: the object is dense and appears white on the image; metal (fillings), bone, crowns, endo files

Answer 12

Radiopaque

Question 13

Medium gray to black; lets the x-ray pass through; the object is not too dense; airway, nerve canal, pathology, caries; sinuses; nasal cavity

Answer 13

radiolucent

Question 14

permits visualizing the position of the beam of radiation relative to the patient

Answer 14

beam indicating device (BID) or position indicating device (PID); collimator “long cone”

Question 15

ability to remove electrons from the orbits of atoms, creating ion pairs

Answer 15

ionizing radiation

Question 16

a form of electromagnetic radiation

Answer 16

x-rays

Question 17

transfer or movement of energy across space as electric or magnetic fields; pure energy w/o mass or weight

Answer 17

electromagnetic radiation

Question 18

tiny bundles or packets of pure energy that travel with a wavelike motion

Answer 18

Photons or quanta of radiation