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FILM SCREEN > Lesson 1 > Flashcards

Lesson 1 Flashcards

1
Q

the key to diagnosis

A

precision

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2
Q

defines the path to healing

A

clarity of an image

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3
Q

important for proper diagnosis

A

Optimum Quality Radiographic Image

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4
Q

Image on the radiograph is a result of:

A

Xray that are absorb
Xray that are scattered
Xray that pass through matter without interaction

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5
Q

the radiograph are the result of x-ray photons that
interact with the film.

A

Black areas

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6
Q

on the radiograph are areas that received no exposure.

A

White areas

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7
Q

are caused by partial exposure from x-rays.

A

Gray tones

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8
Q

Uses xray film and IS in image formation

A

Film screen imaging system

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9
Q

Film is placed between two IS.

A

Film screen imaging system

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10
Q

The remnant X-ray struck the screen and converts this to light which exposes the film.

A

Film screen imaging system

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11
Q

Film is then chemically processed so image appears and becomes permanent on the film.

A

Film screen imaging system

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12
Q

Film is viewed using a negatoscope for interpretation.

A

Film screen imaging system

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13
Q

Uses computers to produce an image.

A

Digital imaging system

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14
Q

Two types of digital imaging system

A

Computed radiography
Digital radiography

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15
Q

Properties of radiographic image

A

Density
Detail
Distortion
Contrast
Mottle
Noise

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16
Q

Amount of blackening on the radiograph.

A

Density

17
Q

Relates directly to the amount of exposure received by the film.

A

Density

18
Q

The blacker the film, the higher the

A

Density

19
Q

Density difference between adjacent areas on the radiograph.

A

Contrast

20
Q

Results from differences in attenuation of the x-ray beam as it passes through various tissues in the body.

A

Contrast

21
Q

Refers to how well one can see small structures on the radiograph.

A

Detail

22
Q

Sharpness of the structural edges of the radiograph (definition).

A

Detail

23
Q

Change in size and/or shape of the object as seen on the radiograph.

A

Distortion

24
Q

Two types of distortion

A
  1. Size distortion (magnification)
  2. Shape distortion ( true distortion)
25
Q

The apparent granular appearance in areas of apparent even density in the radiographic image.

A

Mottle

26
Q

Three types of mottle

A
  1. Film graininess
  2. Structure mottle
  3. Quantum mottle
27
Q

random fluctuation in the density of the image usually inherent in the system.

A

Noise

28
Q

something that detracts the viewer from seeing the true image (signal).

A

Noise

29
Q

Four sources of noise

A
  1. Film graininess
  2. Structure mottle
  3. Quantum mottle
  4. Scatter radiation

FILM SCREEN (2 decks)

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