Deck 21: Introduction to Dental Radiography and Equipment

Question 1

Another name for the lead diaphragm is the ____________.

A) filter
B) focal spot
C) focusing cup
D) collimator

Answer 1

collimator

Question 2

The MPD per year for radiation workers is _____ rems.

A) 0.05
B) 50
C) 5
D) 0.005

Answer 2

5

Question 3

The molybdenum focusing cup is on which side of the x-ray tube?

A) Anode
B) Cathode
C) Both a and b
D) None of the above

Answer 3

Cathode

Question 4

The effects of radiation are ____________.

A) lost with time
B) dissipated
C) accumulative
D) none of the above

Question 5

The radiation formed when the primary x-rays strike the patient is _________ radiation.

A) leakage
B) secondary
C) scatter
D) none of the above

Question 6

Using E-speed film instead of D-speed film will reduce the developing time.

Question 7

Imaging systems are used by dental professionals.

Question 8

The central beam that comes from the x-ray tube head is _________ radiation.

A) primary
B) secondary
C) scatter
D) none of the above

Question 9

The size of narrow anterior film is ______.

A) 0
B) 1
C) 2
D) 4

Question 10

The inventor of x-rays is ____________.

A) Kells
B) Roentgen
C) Black
D) none of the above

Question 11

The lead apron should never be folded.

Question 12

The area on the tungsten target where the electrons hit is the ____________.

A) collimator
B) central beam
C) anode
D) focal spot

Question 13

The radiation that is deflected from its path as it strikes matter is _________ radiation.

A) primary
B) secondary
C) scatter
D) none of the above

Question 14

Which statement equals more energy?

A) Short wavelength with high frequency
B) Short wavelength with low frequency
C) Long wavelength with low frequency
D) Long wavelength with high frequency

Question 15

A dosimeter badge should be worn ____________.

A) at all times in the dental office
B) only while exposing radiographs
C) only while developing radiographs
D) at all times in the dental office, even when going out for lunch

Question 16

What determines the quality of radiation?

A) Electronic timer
B) Kilovoltage
C) Milliamperage
D) Control panel

Question 17

What determines the amount or quantity of radiation?

A) Electronic timer
B) Kilovoltage
C) Milliamperage
D) Control panel

Question 18

The time between the exposure and the development of biological effects is the _________ period.

A) exposure
B) latent
C) accumulative
D) none of the above

Question 19

The tissues/organs most sensitive to radiation include:
1) nerve
2) liver
3) bone marrow
4) reproductive cell
5) connective tissue

A) 3, 4
B) 1, 2, 3
C) 1, 2, 3, 4, 5
D) none of the above

Question 20

The form of radiation that escapes in all directions from the tube head is _________ radiation.

A) primary
B) leakage
C) scatter
D) secondary

Question 21

The dental film that reduces radiation exposure up to 20 percent is the ____________.

A) Kodak Ektoaspeed plus intra-oral
B) Kodak Ektoaspeed D-speed
C) Kodak Insight F-speed
D) E-speed

Question 22

Label the components of the x-ray production in the tubehead.

1. Aluminum filter
2. Anode
3. Cathode
4. Copper stem
5. Glass envelope
6. Heat radiator
7. kVp
8. Lead diaphragm/collimator
9. Lead lining
10. Metal casing
11. Oil bath
12. Open cone
13. Port
14. Primary x-ray beam
15. Step-down transformer
16. Step-up transformer
17. Tungsten filament and focusing cup
18. Tungsten target
19. Vacuum
20. Window

Question 24

The dental film that has the highest speed for the greatest reduction in radiation exposure for the patient is the ____________.

A) Ultraspeed
B) Ektoaspeed
C) Insight
D) none of the above

Question 25

Sensor/image plates for digital imaging can come in which of the following sizes and designs?
1) Printer
2) Panoramic
3) Computer
4) Cephalometric
5) Scanner
6) Full-sized "0" x-ray
7) Full-sized "2" x-ray

A) 2, 4, 6, 7
B) 1, 3, 5, 6
C) 2, 3, 4, 5
D) 1, 2, 5, 6

Question 28

In regard to the size of crystals in the emulsion, the larger the crystals, ____________.

A) the faster the film
B) the slower the film
C) there is no difference
D) it depends on the temperature of the developing solution

Question 29

The lead apron with the thyroid collar should be used for ____________.

A) children
B) adults
C) pregnant women
D) all of the above

Question 30

Milliamperage seconds determine the amount of radiation exposure the patient receives. The difference between the shades of gray is the ____________.

A) density
B) contrast

Question 31

X-ray film is sensitive to ____________.

A) stray radiation
B) chemicals
C) high temperatures
D) all of the above

Question 32

The experiment with a cathode ray tube called the Hittorf-Crookes tube was used to discover which of the following?

A) Radiation
B) Electromagnetic energy
C) X-rays
D) Ionization

Question 33

The degree of darkness on an x-ray, which is also controlled by MAS, is the ____________.

A) density
B) contrast