Practice Test 1 | 暗記メーカー

暗記メーカー

Practice Test 1

50問 • 3ヶ月前

問題一覧

1

the term spectral matching refere to the fact that film sensitivity must be matched with

proper color screen fluorescence

2

a hospital decides to design a darkroom using a maze entrance, what is the expected effect on workflow compared to a conventional door system?

faster access and improved light safety

3

boxes of film stored in too warm an area may be subject to

film fog

4

what is the main advantage of indirect safelight compared to direct safelight?

more even illumination of the work area

5

what is an appropriate power light bulb for safelight approx. 4 feet from a film working surface?

7 to 15 watts

6

which of the following color light emissions will expose orthochromatic film? 1. red 2. blue 3. yellow

2 and 3 only

7

which of the following are the most desirable conditions for storing processed film?

60% humidity, 70 degrees F

8

a safelight with a 15 watt bulb is placed 2 feet from the film counter, the film appears fogged after a few minutes of handling. what is the most likely cause?

the safelight is too close

9

if the safelight filter in the darkroom us cracked, the most likely result is:

film fogging

10

a student notices that stored film has a uniform gray appearance, even in areas unexposed to light. which storage error is the most likely cause?

high temperature

11

which term refers to light being reflected from one intensifying screen, through the film, to the opposite emulsion and screen?

crossover

12

emission of large amount of light after absorption of radiation by phosphor crystal will demonstrate what characteristics?

conversion efficiency

13

which type of intensifying screen cassette would produce the lowest patient exposure dose?

high speed rare earth screen

14

cardboard film holders are black cardboard envelopes that hold what type of film?

single emulsion

15

to evaluate poor film-screen contact, what must be done?

use paper clip during exposure

16

the substratum layer pertains to

adhesive layer

17

dimensional stability is the property of maintaining the size and shape of which of the following?

base

18

the following has been used as a radiographic film base, except:

gelatin

19

the radiographic film base appears blue:

so that image viewing is more comfortable

20

what metric size is equivalent to a 14 x 17" xray film?

35 x 43 cm

21

which of the following theories best explains the photographic effect?

gurney-mott

22

the interstitial atoms in a crystal of silver halifr include which of the following?

silver, bromine, and iodine

23

the sensitivity center is usually silver:

atoms

24

the formation of a latent image follows which interaction with the emulsion?

photoelectric effect

25

this agent functions to remove impurities by forming stable complexes with metallic ions and salts

sequestering agent

26

the pH environment required for proper development of the exposed film is:

alkaline

27

which of the following is most likely to produce a radiograph with a long scale of contrast?

increased photon energy

28

which of the following technical changes would serve to remedy the effects of widely different tissue densities?

high-kVp exposure factors

29

SID affects recorded detail in which of the following ways?

recorded detail is directly related to SID

30

what chemical is used as preservative agent to help decrease the oxidation of the reducing agents when they are combined with air?

sodium sulfite

31

all of the following are related to recorded detail, except:

mA

32

which of the following chemical functions to change the latent image to a visible image?

hydroquinone

33

using a 48" SID, how much object distance OID must be introduced to magnify an object two times?

24 in OID

34

replenishment tanks should have close-fitting floating lids primarily:

to control aerial oxidation

35

the action of two agents working together is greater than the sum of two agents working independently.

synergism

36

what will result from using a single-emulsion film in an image receptor having a two intensifying screens?

decreased density

37

foreshortening of an anatomic structure means that:

it is projected on the film shorter than its actual size

38

focal spot blur is greatest:

toward the cathode end of the xray beam

39

a focal spot size of 0.3 mm or smaller is essential for:

magnification radiography

40

if the radiographer is unable to achieve short OID because of the structure of the body part or patient condition, which of the following adjustments can be made to minimize magnification?

a longer SID should be used

41

in order to evaluate light leak levels, for how long should the radiographer allow dark adaptation inside the darkroom?

5 mins

42

which of the following artifacts can occur in both CR and film/screen radiography?

static electricity

43

which contrast is inherent on the radiograph?

film

44

which causes a brownish stain on the film due to inadequate washing?

thiosulfate

45

which of the following describes an artifact produced when chemistry is not properly removed from a film, and it runs up or down the film leaving a stain?

curtain effect

46

what conditions will cause static discharge artifacts on film?

low humidity

47

what causes a black, crescent half-moon artifact on a radiograph?

bending of films

48

conditions contributing to poor radiograohic film archival quality include: 1. fixer retention 2. insufficient developer replenishment 3. poor storage conditions

1, 2, and 3

49

which of the following terms is used to describe unsharp edges of tiny radiographic details?

blur

50

what is the magnification factor for a foreign object that cast a shadow 5.4 cm wide on a PA abdomen radiograph produced at 100 cm when the mass is located 4.4 cm from the film?

1.05

Imaging Equipment and Managment (1)

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100問 • 5ヶ月前

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Imaging Equiment and Maintenance (3)

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SET 1

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CRDR

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IR

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Ethics and Jurisprudence

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CT

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5問 • 4ヶ月前

問題一覧

1

the term spectral matching refere to the fact that film sensitivity must be matched with

proper color screen fluorescence

2

a hospital decides to design a darkroom using a maze entrance, what is the expected effect on workflow compared to a conventional door system?

faster access and improved light safety

3

boxes of film stored in too warm an area may be subject to

film fog

4

what is the main advantage of indirect safelight compared to direct safelight?

more even illumination of the work area

5

what is an appropriate power light bulb for safelight approx. 4 feet from a film working surface?

7 to 15 watts

6

which of the following color light emissions will expose orthochromatic film? 1. red 2. blue 3. yellow

2 and 3 only

7

which of the following are the most desirable conditions for storing processed film?

60% humidity, 70 degrees F

8

a safelight with a 15 watt bulb is placed 2 feet from the film counter, the film appears fogged after a few minutes of handling. what is the most likely cause?

the safelight is too close

9

if the safelight filter in the darkroom us cracked, the most likely result is:

film fogging

10

a student notices that stored film has a uniform gray appearance, even in areas unexposed to light. which storage error is the most likely cause?

high temperature

11

which term refers to light being reflected from one intensifying screen, through the film, to the opposite emulsion and screen?

crossover

12

emission of large amount of light after absorption of radiation by phosphor crystal will demonstrate what characteristics?

conversion efficiency

13

which type of intensifying screen cassette would produce the lowest patient exposure dose?

high speed rare earth screen

14

cardboard film holders are black cardboard envelopes that hold what type of film?

single emulsion

15

to evaluate poor film-screen contact, what must be done?

use paper clip during exposure

16

the substratum layer pertains to

adhesive layer

17

dimensional stability is the property of maintaining the size and shape of which of the following?

base

18

the following has been used as a radiographic film base, except:

gelatin

19

the radiographic film base appears blue:

so that image viewing is more comfortable

20

what metric size is equivalent to a 14 x 17" xray film?

35 x 43 cm

21

which of the following theories best explains the photographic effect?

gurney-mott

22

the interstitial atoms in a crystal of silver halifr include which of the following?

silver, bromine, and iodine

23

the sensitivity center is usually silver:

atoms

24

the formation of a latent image follows which interaction with the emulsion?

photoelectric effect

25

this agent functions to remove impurities by forming stable complexes with metallic ions and salts

sequestering agent

26

the pH environment required for proper development of the exposed film is:

alkaline

27

which of the following is most likely to produce a radiograph with a long scale of contrast?

increased photon energy

28

which of the following technical changes would serve to remedy the effects of widely different tissue densities?

high-kVp exposure factors

29

SID affects recorded detail in which of the following ways?

recorded detail is directly related to SID

30

what chemical is used as preservative agent to help decrease the oxidation of the reducing agents when they are combined with air?

sodium sulfite

31

all of the following are related to recorded detail, except:

mA

32

which of the following chemical functions to change the latent image to a visible image?

hydroquinone

33

using a 48" SID, how much object distance OID must be introduced to magnify an object two times?

24 in OID

34

replenishment tanks should have close-fitting floating lids primarily:

to control aerial oxidation

35

the action of two agents working together is greater than the sum of two agents working independently.

synergism

36

what will result from using a single-emulsion film in an image receptor having a two intensifying screens?

decreased density

37

foreshortening of an anatomic structure means that:

it is projected on the film shorter than its actual size

38

focal spot blur is greatest:

toward the cathode end of the xray beam

39

a focal spot size of 0.3 mm or smaller is essential for:

magnification radiography

40

if the radiographer is unable to achieve short OID because of the structure of the body part or patient condition, which of the following adjustments can be made to minimize magnification?

a longer SID should be used

41

in order to evaluate light leak levels, for how long should the radiographer allow dark adaptation inside the darkroom?

5 mins

42

which of the following artifacts can occur in both CR and film/screen radiography?

static electricity

43

which contrast is inherent on the radiograph?

film

44

which causes a brownish stain on the film due to inadequate washing?

thiosulfate

45

which of the following describes an artifact produced when chemistry is not properly removed from a film, and it runs up or down the film leaving a stain?

curtain effect

46

what conditions will cause static discharge artifacts on film?

low humidity

47

what causes a black, crescent half-moon artifact on a radiograph?

bending of films

48

conditions contributing to poor radiograohic film archival quality include: 1. fixer retention 2. insufficient developer replenishment 3. poor storage conditions

1, 2, and 3

49

which of the following terms is used to describe unsharp edges of tiny radiographic details?

blur

50

what is the magnification factor for a foreign object that cast a shadow 5.4 cm wide on a PA abdomen radiograph produced at 100 cm when the mass is located 4.4 cm from the film?

1.05