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Radiography > Producing the image > Flashcards

Producing the image Flashcards

1
Q

the quality of an xray beam is determined by the

A

penetrating power

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2
Q

number of xrays traveling from the xray tube to the film

A

mA

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3
Q

responsible for accelerating the electrons from the cathode to the anode

A

kilovoltage

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4
Q

kilovoltage relates to what of the xrays

A

penetrating power

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5
Q

what radiographic setting determines the quality of the xray beam and its ability to penetrate tissue

A

kvp

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6
Q

if the kvp is high, the mA is

A

low

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7
Q

sante’s rule formula?

A

(2x the thickness in cm) + 40 = kvp

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8
Q

what is the measure of the electron current to the filament which determines how many xrays are produced?

A

mA

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9
Q

hows the mAs calculated?

A

mA x time = mAs

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10
Q

period of time the xrays are permitted to leave the tube

A

exposure time

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11
Q

decrease mA = ___ electrons

A

less

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12
Q

SID

A

source image distance

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13
Q

FD

A

focal film distance

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14
Q

FFD is always kept at what distance

A

40 inches

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15
Q

measurable distance between two adjacent densities

A

contrast

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16
Q

varying degrees of blackness

A

density

17
Q

xrays turn the radiograph what color

A

black

18
Q

non-image forming radiation that is scattered in all directions bc of objects in the path of the primary beam

A

scatter radiation

19
Q

what is the primary exposure factor that controls scatter radiation?

A

kvp

20
Q

anatomical areas viewed using short/long scale

A

short- bone and air

long- soft tissue

21
Q

what exposure factor affects density/contrast

A

density- mA

contrast- kvp

22
Q

(contrast) which is most/least dense

A

most - bone/metal

least- air/gas

23
Q

high contrast = which scale?

A

short

24
Q

low contrast- which scale?

A

long

25
Q

a radiograph with an increased number of grey tones exhibits ___ scale of contrast

A

long

26
Q

a radiograph that is mainly black and whites (few shades of gray) exhibits ___ scale of contrast

A

short

27
Q

animal measures 1-10 cm, use

A

table top

28
Q

animal measures 11-29 cm, use

A

grid/ film tray

Radiography (6 decks)

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