Pages: 22-47 (Diagnostic Imaging) Flashcards Preview

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Flashcards in Pages: 22-47 (Diagnostic Imaging) Deck (150)
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1

Which is the most common element in x-ray beam restriction?
a. Low kVp
b. Film speed
c. Collimator
d. High mAs

c. Collimator

2

Contrast needs to be increased on a radiographic image. Which is the best solution to accomplish this?
a. Decrease kVp by 15%
b. Decrease OID
c. Decrease collimation
d. Decrease grid ratio

a. Decrease kVp by 15%

3

Increasing all of the following will increase density on a radiographic image except:
a. mAs
b. OID
c. kVp
d. film-screen speed

b. OID

4

All of the following will increase contrast on a film except:
a. beam restriction
b. chemical fog
c. fast film screen
d. grids

b. chemical fog

5

Which of the following is not a significant factor in controlling recorded detail on a radiographic image?
a. source-to-image distance (SID)
b. focal spot size
c. grid ratio
d. object-to-image distance (OID)

c. grid ratio

6

All of the following will decrease sharpness on x-ray except:
a. small focal spot
b. increase object-to-image distance (OID)
c. smaller source-to-image distance (SID)
d. large focal spot

a. small focal spot

7

Which of the following properties are significantly affected by a change in mAs?
a. density
b. contrast
c. distortion
d. recorded detail

a. density

8

Which is not an appropriate condition for film storage?
a. 45% humidity
b. 68 degrees F
c. 77 degrees F
d. 55% humidity

c. 77 degrees F

9

Which grid ratio will require the greatest amount of mAs utilized?
a. 3:1
b. 5:1
c. 8:1
d. 16:1

d. 16:1

10

To double the radiographic density, the 15% rule is applied to which of the following?
a. central ray angle
b. anode heel effect
c. focal spot size
d. kVp

d. kVp

11

Which of the following is the most common type of idiopathic scoliosis?
a. juvenile
b. infantile
c. nonstructural
d. adolescent

d. adolescent

12

Intensifying screens contain?
a. silver bromide
b. silver halide
c. gelatin
d. phosphors

d. phosphors

13

Which is not a type of phosphor used in modern intensifying screens?
a. lanthanum
b. gadolinium
c. calcium tungstate
d. yttrium

c. calcium tungstate

14

The patient will be exposed with the most radiation when the bucky factor is?
a. 1
b. 4
c. 6
d. 7

d. 7

15

All of the following will increase contrast on radiographic film except:
a. decrease kVp
b. increase grid ratio
c. increase collimation
d. increase kVp

d. increase kVp

16

Which is used as a film preservative in the development process of film?
a. sodium sulfite
b. water
c. sodium carbonate
d. hydroquinone

a. sodium sulfite

17

The standard developing temperature of film processing is _____ degrees Fahrenheit.
a. 60
b. 64
c. 68
d. 72

c. 68

18

Which reducing agent produces shades of gray on the developing film?
a. glutaraldehyde
b. sodium sulfite
c. potassium bromide
d. phenidone

d. phenidone

19

Hydroquinone is a(n) _____, which helps to build up blackness on the radiograph.
a. accelerator
b. hardener
c. developing agent
d. preservative

c. developing agent

20

Which is responsible for the swelling of gelatin upon development of x-rays?
a. phenidone
b. sodium sulfite
c. glutaraldehyde
d. sodium carbonate

d. sodium carbonate

21

Which would contribute to the lack of fog on film?
a. hardener
b. water
c. restrainer
d. acetic acid

c. restrainer

22

The anti-fog agent or restrainer is identified as:
a. glutaraldehyde
b. phenidone
c. potassium bromide
d. sodium carbonate

c. potassium bromide

23

Which is used to neutralize the developmental residue that is still on the film from processing?
a. water
b. cycon
c. potassium sulfate
d. acetic acid

d. acetic acid

24

Which of the following helps to get ride of unexposed silver bromide crystals?
a. fixer
b. developer
c. activator
d. reducing agent

a. fixer

25

Which of the following is true regarding the Ten-Day Rule?
a. X-rays should be taken 10 days before menstrual period
b. X-rays should be given not more than 10 days after start of menstrual period
c. X-rays should be given 10 days after menstrual period
d. X-rays should never be given during menstrual period

b. X-rays should be given not more than 10 days after start of menstrual period

26

Which is used as the washing agent in film processing?
a. glutaraldehyde
b. water
c. reducing agent
d. activator

b. water

27

If film is not washed enough during the film processing, what color will the film finally turn?
a. purple
b. red
c. brown
d. blue

c. brown

28

The SI unit of measure for rad is which of the following?
a. Gy (gray)
b. Sv (sievert)
c. C/kg (coulomb per kilogram)
d. MeV (mega volts)

a. Gy (gray)

29

The SI unit of measure for rem is best represented as which of the following?
a. MeV (mega volts)
b. Sv (sievert)
c. C/kg (coulomb per kilogram)
d. Gy (gray)

b. Sv (sievert)

30

The unit of exposure is measured in?
a. rads
b. millirem
c. roentgens
d. millirads

c. roentgens