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FIAPIA > PRELIM > Flashcards

PRELIM Flashcards

1
Q

a place where necessary handling & processing of films are carried out safely & efficiently

A

Dark Room

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2
Q

Another name for darkroom

A

Processing room

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3
Q

Location of the darkroom

A

Centrally located

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4
Q

Why is complete blackout necessary in dark room

A

To avoid overexposure of film

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5
Q

Used to transfer cassette films

A

Pass box/ Cassette hatch

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6
Q

Minimum floor area of darkroom

A

10 sq. m.

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7
Q

Required ceiling height of dark room

A

2.5m or 3m

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8
Q

Requirements for darkroom floor

A
  • non-slip
  • light colored
  • durable & easy to clean
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9
Q

Relative humidity of darkroom

A

40% - 60%

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10
Q

Required room temperature of darkroom

A

18 - 20 degrees Celsius

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11
Q

Minimum air changes in darkroom

A

10/ h

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12
Q

How can good ventilation & heating be acquired

A

Usage of Good AC system

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13
Q

Why should the x-ray apparatus be properly placed

A

The primary beam will not be directed to the darkroom wall

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14
Q

How should radioactive materials be stored

A

As remotely as possible from the darkroom

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15
Q

The required thickness of lead in adjacent walls to the radiographic rooms

A

1.6 - 2mm lead

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16
Q

What are the other equivalent wall materials and thickness of lead 1.6 - 2 mm on adjacent walls to the radiographic rooms

A
  • 25 mm barium plaster
  • 225 mm thick single brick wall
  • 150 mm thick concrete
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17
Q

A type of darkroom entrance that has a latch or from the inside

A

Single door

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18
Q

Can a worker be alone in a darkroom with a single door entrance?

A

No

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19
Q

What darkroom entrance can cause accidental exposure of film to white light?

A

Single door

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20
Q

A darkroom entrance with 2 doors; one leading in and the other out

A

Double door

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21
Q

It is a darkroom entrance that has no doors and people can enter & exit anytime

A

Maze Entrance

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22
Q

2 Types of film processing

A

-Manual
-Automatic

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23
Q

What are the equipment in Automatic processing

A
  • loading bench
  • film hopper
  • cassette racks
  • Cassette hatches
  • Processing chemicals
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24
Q

Equipment used in manual processing

A
  • Manual Processing tanks
  • loading bench
  • Film hopper
  • Cassette racks
  • Cassette hatches
  • Darkroom sink
  • Hangers
  • Processing chemicals & storage
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25
Q

An equipment that stores unexposed films and located under the loading bench

A

Film hopper / Film bin

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26
Q

What is the color painted inside the film hopper

A

Black

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27
Q

It stores the hangers that suspends the films

A

Hanger storage

28
Q

Maximum hangers the hanger storage can hold

A

12 hangers

29
Q

Distance between brackets inside the hanger storage

A

100 mm

30
Q

Vertical height, length, and width of labyrinth type entrance

A

height: 2m
length: 3m above
Width: 700mm below

31
Q

Most efficient type of door entrance but most expensive

A

Revolving door entrance

32
Q

Diameter of revolving door entrance

A

3 Feet

33
Q

2 types of darkroom illumination

A
  • White lighting
  • Safe lighting
34
Q

Purpose of white light

A
  • inspection & maintenance of equipment
  • Cleaning of the room
35
Q

Material and intensity of white light

A

60w tungsten
30w Fluorescent

36
Q

Material of safe light and wattage

A

pearl bulb 25w

37
Q

Direct safelight min distance from working surface

A

1.2m

38
Q

Indirect safelight min height

A

2.1m

39
Q

Caused by improper safelight filter

A

Film fog

40
Q

max time of film exposure to safelight

A

20-45 secs

41
Q

Equipment where cassettes are unloaded and loaded

A

Dry bench

42
Q

Top surface material of dry bench

A

Linoleum
Wood
Marble

43
Q

Equipment where processing films are caried out

A

Wet bench

44
Q

height of hanger storage from workbench

A

750mm

45
Q

3 key parts in radiography

A
  • Film
  • Intensifying screen
  • Cassette
46
Q

Holds x-ray film and intensifying screen

A

Film Cassette

47
Q

What materials is the front face of film cassette

A
  • aluminum
  • carbon fiber
48
Q

Material of back side of film cassette

A

Lead sheet

49
Q

2 Types of cassette

A
  • Single screen
  • Double screen
50
Q

Principal application of single cassette screen

A

Mammography

51
Q

Principal application of double screen cassette

A

general radiography

52
Q

device that converts remnant radiation to light producing latent image

A

Intensifying screen

53
Q

Amplifier of remnant radiation

A

Intensifying screen

54
Q

4 Distinct layers of intensifying screen

A
  • base
  • reflective layer
  • phosphor
  • protective coating
55
Q

provides surface for cleaning while protecting the phosphors

A

Protective coating

56
Q

protective coating is transparent to_

A

light

57
Q

The active layer of intensifying screen

A

Phosphor

58
Q

What does the phosphor uses

A

Calcium Tungstate

59
Q

What rare earth elements does the modern screen uses

A
  • Gadolinium
  • Lanthalum
  • Yttrium
60
Q

layer that redirects light to film

A

Reflective layer

61
Q

how is the light fronting the phosphor emitted

A

Isotropically

62
Q

Layer farthest from the film

A

Base

63
Q

Base is usually made of_

A

Polyester

64
Q

materials that give light in response to stimulus

A

Luminescence (Phosphor)

65
Q

2 types of luminescence

A

*Fluorescence
*Phosphorescence

66
Q

Type of luminescence that gives visible light while phosphor is stimulated

A

Fluorescence

67
Q

Type of luminescence that continuously gives visible light after radiation exposure is stopped

A

Phosphoroscence

FIAPIA (3 decks)

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