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Rad Technique > Medical Xray Fim > Flashcards

Medical Xray Fim Flashcards

0
Q

Discovered chemical development

A

Louis Daguerre

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1
Q

Discovered permanent photography

A

Joseph Nicephore Niepce

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2
Q

Discovered wet collodion process

A

Frederick Scott Archer

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3
Q

Invented gelatin silver bromide dry plate

A

Richard L. Maddox ( 1871 - England)

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4
Q

Invented a plate coating machine

A

George Eastman - 1879 (USA)

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5
Q

Discovered xray

A

Wilhelm Conrad Roentgen (1895 - Germany)

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6
Q

First paper designed for xray

A

Kodak ( 1896)

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7
Q

He made a plate w/ thicker silver bromide emulsion

A

Dr. Carl Schleussner, 1896 - Germany

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8
Q

Introduced a double coated film used w/ intensifying screen

A

Dr. Max Levy, 1897 - Germany

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9
Q

Construction of a medical xray film :

A

Base
Adhesive
Emulsion
Supercoat

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10
Q

High tensile strength

A

Polyester

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11
Q

Thickest part

A

Base

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12
Q

Thin coat of gelatin

A

Adhesive (Substralum)

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13
Q

Heart of xray film

A

Emulsion

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14
Q

Protective part

A

Supercoat

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15
Q

Range of frequency which an electromagnetic radiation propagate

A

Electromagnetic Spectrum

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16
Q

Range of wavelength which an unaided human eye can perceive wavelength changes

A

Visible spectrum

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17
Q

Apparent displacement of an image

A

Parallex error

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18
Q

Use to record the image and made up of suspension of light sensitive salts

A

Emulsion

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19
Q

Principal material used for film emulsion

A

Silver Halide Crystal

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20
Q

2 silver halided crystals used for xray type film

A

Silver iodide

Silver Bromide

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21
Q

Range of wavelength of electromagnetic radiation that the film will respond

A

Spectral Sensitivity

22
Q

Wavelength which the film will exhibit its highest response

A

Peak sensitivity

23
Q

Wavelength beyond which the film os no longer sensitive

A

Cut off sensitivity

24
Q

Has natural sensitivity that ends at the blue region

A

AgBr (Silver Bromide)

25
Q

Emits blue light

A

Calcium Tungstate IS

26
Q

Emits green light

A

Rare Earth Screen / Oxysulfide

27
Q

To create films w/ increased sensitivity ( green light) that was introduced by Vogel

A

Spectral Sensitizing

28
Q

Process of extending the sensitivity of silver bromide crystal

A

Spectral Sensitizing

29
Q

Types of film according to sensitivity

A

Monochromatic
Orthochromatic
Panchromatic

30
Q

Blue sensitive film

A

Monochromatic

31
Q

Green sensitive film

A

Orthochromatic

32
Q

Sensitive to all colors

A

Panchromatic

33
Q

2 types of grains

A

Globular grains

Tabular grains

34
Q

Spherical in shape, bigger volume. Use for blue sensitive film

A

Globular

35
Q

Provides bigger surface but smaller volume , less silver, green sensitive

A

Tabular Grain

36
Q

Measures how sensitive / effective the xray film is

A

Speed

37
Q

The difference of the black and white

A

Contrast

38
Q

The apparent clumping of the crystal as seen on the radiograph

A

Graininess

39
Q

Average grain is

A

1 micrometer

40
Q

Binds the silver halide crystal

A

Binder

41
Q

First binder use

A

Collodion

42
Q

It means formation of water

A

Gelata

43
Q

It comes from collagen fiber and it is the modern use

A

Gelatin

44
Q

Very good in absorbing light photons

A

Dye

45
Q

Films that have emulsion layer coated in both sides

A

Duplitized / Double coated film

46
Q

Used w/ IS

A

Screen type film

47
Q

Standard type

A

Contrast

48
Q

Fine grain w/ good image

A

Half speed

49
Q

Opposite of contrast , low contrast and useful exposure range

A

Latitude

50
Q

Thicker emulsion layer
Higher resolution
Requires higher exposure factor

A

Non screen type film / Direct exposure film

51
Q

Film that have emulsion layer coated on only one side.

A

Single - coated film

52
Q

Image produced by the reflected light that pass through the emulsion layer

A

Halation

Rad Technique (13 decks)

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