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C5 Part 2
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  • 問題数 27 • 12/18/2024

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    問題一覧

  • 1

    IR of Conventional X-ray?

    Film Screen Cassette

  • 2

    IR of Computed Radiography

    Imaging Plate

  • 3

    IR of Digital Radiography

    Flat Panel Detector

  • 4

    represents the amount of current passed through the X-ray tube.

    mA

  • 5

    determines the number of photons the X-ray tube produces, also known as X-ray quantity.

    Current

  • 6

    Total exposure time is measured in what unit?

    Seconds

  • 7

    controls the length of the x-ray exposure by determining how long the current (mA) will be passing through the x-ray tube.

    Exposure time

  • 8

    measure of radiation produced (milliamperage) over a set amount of time (seconds) via an x-ray tube.

    Milliampere-seconds (mAs)

  • 9

    calculation for receptor exposure formula

    mas1 over mas2 equals D1^2 over D2^2

  • 10

    pertains to mAs in the sense that all combinations of mA x seconds that amount to an equal quantity will produce the same amount of density.

    Reciprocity Law

  • 11

    ________ with a longer time allow for less patient motion

    smaller mA

  • 12

    measures how much scatter is removed by the grid and how the mechanical factors be adjusted to produce the same optical density.

    Bucky Factor

  • 13

    ratio of the mAs required with the grid to the mAs required without the grid to produce the same optical density

    Bucky Factor

  • 14

    Use of grid increases what by the Bucky?

    Patient dose

  • 15

    of a film represents the amount of radiation required to produce a radiograph of acceptable density.

    Speed Class

  • 16

    As the speed of the film increase, the amount of radiation needed to properly expose it will what?

    Decrease

  • 17

    Increasing speed also decreases image noise. True or False

    False. Increase

  • 18

    Speed for routine work: Speed for high detail:

    • 200-800 • 50-100

  • 19

    speed films that are small grain, better definition, more exposure

    Slow speed films

  • 20

    Letter of each Fast Speed Films (ultra ekta speed) (ekta speed) (ultra speed)

    F E D

  • 21

    can be measured by - intensification factor, - relative name or speed value

    Screen Speed

  • 22

    exposure required to create a certain optical density without a screen is divided by the exposure required with a screen to create the same optical density determines?

    Intensification Factor

  • 23

    distance between the x-ray tube and the image receptor is the

    Source to Image Distance (SID)

  • 24

    Screen speed used for high resolution?

    Slow

  • 25

    Screen speed used for regular/standard

    Medium

  • 26

    Screen speed used for fast screen?

    Fast

  • 27

    According to inverse square law, if you move twice as far from the source the intensity of the radiation will decrease by a factor of what?

    4