Chapter 10

Question 1

Quality assurance

Answer 1

The planning, implementation and evaluation of procedures to produce high quality radiographs with maximum diagnostic information while minimizing the radiation exposure

Question 2

Quality control

Answer 2

A series of test to assure that the radiographic system is functioning properly and that the radiographs produced are of an acceptable level of quality

Question 3

Quality control objectives

Answer 3

1. Maintain high standard of image quality
2. ID problems BEFORE image quality is compromised
3. Keep the patient and occupational radiation exposure to a minimum
4. Reduce the # of retakes

Question 4

X-ray machine testing includes:

Answer 4

• Radiation output
• Time accuracy
• mA and kV settings
• Focal spot size
• Filtration
• Collimation
• Beam alignment
• Tube head stability

Question 5

View boxes in a darkroom..

Answer 5

Have an afterglow of the fluorescent light and can be a source of light

Question 6

Place an unexposed film in fixer for 4 minutes of when film clears whichever comes first. If the film does not clear in 4 minutes or less, the fixer needs replacement

Answer 6

Clearing time test

Question 7

What does the clearing time test help measure

Answer 7

Fixer strength

Question 8

Reference film

Answer 8

Radiograph that is processed under ideal condition and then used to compare the film densities that are processed daily

Question 9

Output Consistency Test

Answer 9

Monitored by using step wedge to determine film density and contrast
May also be used to test the strength of the chemicals

Question 10

Coin test

Answer 10

Monitors safelight and darkroom conditions

Question 11

Light test

Answer 11

Monitors darkroom. Close the door to darkroom and look for light seepage around the door

Question 12

Digital

Answer 12

Inspect equipment on a regular basis for signs of wear or deterioration
Testing and monitoring must be done according to the manufacturers specifications

Question 13

Monitoring badges

Answer 13

Monitors how much radiation the operator is exposed to

They do not protect you from radiation

Question 14

Quality administration

Answer 14

• Descriptions of the plan
• Assignment of duties
• Monitoring schedule
• Maintence schedule
• Record keeping log
• Plan for evaluation and revision
• In service training

Question 15

True or false. Calibration of dental x-ray equipment can be performed by a dentist, dental hygienist, or dental assistant

Answer 15

False

Question 16

True or false. Annual tests for dental x-ray machines can be performed by a dentist, dental hygienist, or assistant

Answer 16

True

Question 17

True or false. For quality control purposes, each new box of unopened film should be tested for film freshness and fogging before use

Answer 17

False

Question 18

After processing, fresh film that has been properly stored and protected will appear

Answer 18

Clear with a slight blue tint

Question 19

After performing the screen-film contact test, a wire mesh image of uniform density appears. These results indicate

Answer 19

Adequate film-screen contact

Question 20

True or false. When functioning properly, a viewbox should emit a uniform intense light

Answer 20

False

Question 21

One of the most critical areas of quality control that requires daily monitoring is

Answer 21

Processing of films

Question 22

The coin test is used to check

Answer 22

proper safelighting

Question 23

Must be closely monitored with manual processing techniques

Answer 23

temps of the water bath
levels of the processing solutions
accuracy of the timer
accuracy of the thermometer

Question 24

On the average, processing solutions should be changed

Answer 24

Every 3 to 4 weeks

Question 25

On the average, processing solutions should be replenished

Answer 25

once daily

Question 26

The clearing test is used to monitor

Answer 26

Fixer strength