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FIAPIA > PRELIM > Flashcards

PRELIM Flashcards

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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
An equipment that stores unexposed films and located under the loading bench
Film hopper / Film bin
26
What is the color painted inside the film hopper
Black
27
It stores the hangers that suspends the films
Hanger storage
28
Maximum hangers the hanger storage can hold
12 hangers
29
Distance between brackets inside the hanger storage
100 mm
30
Vertical height, length, and width of labyrinth type entrance
height: 2m length: 3m above Width: 700mm below
31
Most efficient type of door entrance but most expensive
Revolving door entrance
32
Diameter of revolving door entrance
3 Feet
33
2 types of darkroom illumination
* White lighting * Safe lighting
34
Purpose of white light
* inspection & maintenance of equipment * Cleaning of the room
35
Material and intensity of white light
60w tungsten 30w Fluorescent
36
Material of safe light and wattage
pearl bulb 25w
37
Direct safelight min distance from working surface
1.2m
38
Indirect safelight min height
2.1m
39
Caused by improper safelight filter
Film fog
40
max time of film exposure to safelight
20-45 secs
41
Equipment where cassettes are unloaded and loaded
Dry bench
42
Top surface material of dry bench
Linoleum Wood Marble
43
Equipment where processing films are caried out
Wet bench
44
height of hanger storage from workbench
750mm
45
3 key parts in radiography
* Film * Intensifying screen * Cassette
46
Holds x-ray film and intensifying screen
Film Cassette
47
What materials is the front face of film cassette
* aluminum * carbon fiber
48
Material of back side of film cassette
Lead sheet
49
2 Types of cassette
* Single screen * Double screen
50
Principal application of single cassette screen
Mammography
51
Principal application of double screen cassette
general radiography
52
device that converts remnant radiation to light producing latent image
Intensifying screen
53
Amplifier of remnant radiation
Intensifying screen
54
4 Distinct layers of intensifying screen
* base * reflective layer * phosphor * protective coating
55
provides surface for cleaning while protecting the phosphors
Protective coating
56
protective coating is transparent to_
light
57
The active layer of intensifying screen
Phosphor
58
What does the phosphor uses
Calcium Tungstate
59
What rare earth elements does the modern screen uses
* Gadolinium * Lanthalum * Yttrium
60
layer that redirects light to film
Reflective layer
61
how is the light fronting the phosphor emitted
Isotropically
62
Layer farthest from the film
Base
63
Base is usually made of_
Polyester
64
materials that give light in response to stimulus
Luminescence (Phosphor)
65
2 types of luminescence
*Fluorescence *Phosphorescence
66
Type of luminescence that gives visible light while phosphor is stimulated
Fluorescence
67
Type of luminescence that continuously gives visible light after radiation exposure is stopped
Phosphoroscence
68
Approximate time in Developing (Manual and Automatic)
Manual: 5 mins Automatic: 22s
69
Approximate time in wetting (manual)
15s
70
Approx. time in fixing (Manual & Automatic)
Manual: 15 mins Automatic: 22s
71
Approx. time in washing (Manual & Automatic)
Manual: 20 mins Automatic: 20s
72
Approx. time in drying (manual & automatic)
Manual: 30mins Automatic: 26s

FIAPIA (3 decks)

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