Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

FILM SCREEN IMAGE ACQUISITION, PROCESSING AND IMAGE ANALYSIS > The Radiographic Film > Flashcards

The Radiographic Film Flashcards

1
Q

those that exit the patient and interact with the image receptor

A

image forming x-rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

the x-rays that remain as the useful beam exits the patient

A

exit beam

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

the medium that converts the x-ray beam into a visible image

A

image receptor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the film that records the image based on the pattern of transmitted xrays and light produced by the intensifying screens

A

radiographic film

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

4 parts of film

A

base
emulsion
adhesive layer
overcoat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

thickness of radiographic film

A

150 to 300 μm (micrometer)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

it is also called supercoat, overcoat, protective coating or supercoating that is a protective covering of gelatin that enclosed the emulsion

A

topcoat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

it is used to prevent damage to sensitive emulsion layer

it protects the emulsion from scratches, pressure and contamination

it allows rough manipulation of x-ray film before exposure

A

topcoat
supercoat
overcoat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

it is the heart of radiographic film and it is radiation and light sensitive

A

emulsion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

size of emulsion

A

3-5 μm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

composition of emulsion

A

silver halide crystal and gelatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

it is the active ingredient of the emulsion with high atomic number

A

silver halide crystal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

composition of shc

A

silver bromide 98%
silver iodide 2%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

it holds the silver halide crystal uniformly dispersed in place

A

gelatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

characteristics of gelatin

A

clear and porous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

its principal function is to provide mechanical support for silver halide crystals

A

gelatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

double emulsion film is called ____

A

duplitized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

it is a colloid extracted from cattle hooves and hide, then rendered into a very pure, uncontaminated state

A

gelatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

it is the ideal suspension medium for the silver halide crystals

A

gelatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

size of silver halide crystal

A

1.0 to 1.5 μm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

it is the imperfections in the crystal structure

A

sensitivity specks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

it is the material sensitive to radiation and light, an active ingredient and it functions as energy detectors

A

silver halide crystal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

a thin coating located between the emulsion and base that simply adheres the base to the emulsion

A

adhesive layer/substratum layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

it is the foundation or framework of the film

A

base

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

composition of film base

A

polyester

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

size of base

A

150 to 300 μm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

composition of polyester

A

polymer matrix
ethylene glycol
dimethyl terephthalate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

4 characteristics of a good film base

A

lucency
dimensional stability
superior physical stability
blue tint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

it is the speed point where speed is the degree to which the emulsion is sensitive to x-rays or to light

A

film speed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

high speed = high _______ = ___ exposure necessary to produce a specific density

A

high speed = high sensitivity = low exposure necessary to produce a specific density

31
Q

two primary factors that affects speed point

A

number of silver halide crystal
size of silver halide crystal

32
Q

margin of errors in technical factors that the film allows that will still produce an acceptable range of densities

A

film latitude

33
Q

inherent characteristic of the film emulsion that allow a moderate or acceptable range of densities to be recorded

A

film latitude

34
Q

narrow film latitude = ___ contrast emulsion, short gray scale

A

narrow film latitude = high contrast emulsion, short gray scale

34
Q

ability of exposure factors to record an image with an appropriate range of densities on the film

A

exposure latitude

35
Q

inherent ability to record minute differences in densities across the film ability of the radiographic film to provide a certain level of image contrast

A

film contrast

36
Q

it is the most widely used radiographic film

A

screen type film

37
Q

how many intensifying screen does screen type film have?

A

two intensifying screen

38
Q

it is a film that require less x-ray exposure, can be either manually or automatically processed and can have either a single or double emulsion coating (duplitized)

A

screen type film

39
Q

occurs when light forms an angle affecting a spot in the emulsion and travels through the other side striking a spot not exactly corresponding to the opposite layer, producing an effect similar to penumbra

A

parallax effect

40
Q

4 ways of reducing parallax effect

A

blue dye
monochromatic film
anti crossover layer
thinner base

41
Q

advantages of screen type film

low emulsion ____ = low ____ time = low patient ____

A

low emulsion thickness = low developing time = low patient dose

42
Q

disadvantages of screen type film

high ____ = decreased _____ = high quantum mottle

A

high parallax effect = decreased resolution = high quantum mottle

42
Q

disadvantages of screen type film

high ____ = decreased _____ = high quantum mottle

A

high parallax effect = decreased resolution = high quantum mottle

43
Q

it is a type of film that is designed for use without the need of an intensifying screen

also called non-screen film

A

direct exposure film

44
Q

advantages of direct exposure film

low parallax effect = low quantum mottle = high image _____

A

low parallax effect = low quantum mottle = high image quality

45
Q

disadvantages of direct exposure film

high patient dose = high emulsion thickness = high development ___

A

high patient dose = high emulsion thickness = high development time

46
Q

it is a film that has emulsion coated on one side of the base only that is why there is no parallax effect

A

single emulsion film

47
Q

three types of radiographic film

A

screen type film
direct exposure film/non screen film
single emulsion film

48
Q

it prevents halation of light as the screens fluoresce, high sharpness of image, requires high exposure

A

anti halation backing

49
Q

3 types of film according to spectral sensitivity (color)

A

monochromatic film
orthochromatic film
panchromatic film

50
Q

it is a type of film according to spectral sensitivity, that is blue sensitive, globular grains, insensitive to red, orange and yellow

A

monochromatic film

51
Q

it is a type of film according to spectral sensitivity, green sensitive, tabular grains, rare earth phosphor and insensitive to red

A

orthochromatic film

52
Q

it is a type of film according to spectral sensitivity, that is sensitive to all visible light and mainly used in photography and there is no insensitivity

A

panchromatic film

53
Q

2 types of grain technology

A

globular grain
tabular grain

54
Q

what kind of grain is:

Spherical in shape
Has bigger volume
For blue-sensitive film

A

globular grain

55
Q

what kind of grain is:

Tabletop-like structure
Provides bigger surface
For green sensitive film

A

tabular grain

56
Q

fresh films storage temperature

A

20°C

57
Q

fresh films storage humidity

A

40% to 60%

58
Q

storage temperature after the usual storage for original radiographs

A

60 to 80°F

59
Q

the film must be store in a ____ and ____ place

A

the film must be store in a cool and dry place

60
Q

storage temperature if storing films for 30 to 45 days

A

21°C

61
Q

storage temperature if storing films greater than 1 year

A

10°C

62
Q

storage temperature to store at to stop aging process

A

0°

63
Q

FIFO

A

first in, first out

64
Q

films are stored ____

A

vertically

65
Q

rubber gloves are avoided and uses cotton gloves because it may cause ____

A

static artifacts

66
Q

the usual storage for original radiographs is __ to __ years

A

the usual storage for original radiographs is 5 to 7 years

67
Q

high temperature = _ fog

A

high temperature = high fog

68
Q

low temperature = _ static discharge

A

low temperature = high static discharge

69
Q

high temperature = _ aging process

A

high temperature = high aging process

70
Q

contamination of developer solution with 0.1% of fixer

A

chemical fog

71
Q

restrainer prevents chemical fog by regulating development

A

development fog

72
Q

most common form of film fogging

A

safelight fog

FILM SCREEN IMAGE ACQUISITION, PROCESSING AND IMAGE ANALYSIS (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions