Producing the Image Flashcards

1
Q

Common problem that gives the radiograph an overall gray appearance and can be caused by numerous things

A

Film fog

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2
Q

4 factors of exposure

A
  1. kVp
  2. Milliamperes (mA)
  3. Time (fractions of a second)
  4. Distance (SID)
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3
Q

How much contrast is on the radiograph

A

Radiographic contrast

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4
Q

A result of the absorption characteristics of the anatomical tissue radiographed

A

Subject contrast

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5
Q

Collects scatter radiation under the table top

A

Grid

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6
Q

Eliminates soft rays

A

Filter

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7
Q

Changes the field of the x-ray

A

Collimation

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8
Q

Measurable difference between 2 adjacent densitites; bone vs. lungs
Quality of x-rays; “power” behind x-rays

A

Contrast

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9
Q

% of blackness

Quantity of x-rays

A

Density

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10
Q

What color does bone show up?

A

White

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11
Q

What color does soft tissue show up?

A

Grey

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12
Q

What color do gases show up?

A

Black

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13
Q

What color does metal show up?

A

White

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14
Q

Affects contrast

A

kVp

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15
Q

Affects density

A

mAs

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16
Q

Can affect the radiographic contrast

A

Time

17
Q

Short scale of contrast

A

High contrast

18
Q

Long scale of contrast

A

Low contrast

19
Q

Most common artifact

A

pt movement

20
Q

Low mAs results in

A

pale film

21
Q

High mAs results in

A

overall black appearance

22
Q

Period of time it takes for the x-rays to leave the tube

Fractions of a second

A

Time

23
Q

The intensity of the radiation at a location is inversely proportional to the square distance from the source of the radiation

A

Inverse Square Law

24
Q

Film exposed in 2 ways

A

Table top and grid

25
Q

The distance between the tube and the film

A

SID

26
Q

SID

A

source image distance

27
Q

FFD

A

Focal Film Distance

28
Q

Sante’s rule

A

(2 x thickeness in cm) + 40 + grid