Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/30

Click to flip

30 Cards in this Set

  • Front
  • Back
An increase of 30 kV would increase contrast.
False
If the mA is increased from 100 to 200 and the time is cut in half, the density will remain the same.
True
If the mAs is increased the density will increase.
True
If the object-film distance is increased magnification will increase.
True
If the SID is increased magnification will decrease.
True
If an 8:1 grid is replaced with a 16:1 grid radiographic density will increase.
False
If high speed screens are replaced with slower screens detail will decrease.
False
Primary radiation is that radiation which emerges from the patient to exposure the film
False
The importance of high-ration grids in the control of secondary radiation is that they filter out all of the secondary radiation.
False
Detail is decreased by decreasing the kV 15% and doubling the mAs.
False
An increase in grid ratio would result in an increase in the amount of secondary radiation absorbed.
True
If a small focal spot is used, the penumbra will increase.
False
The function of contrast in a radiograph is to make detail visible.
True
A spinning top can be used to measure the penetrating power of the radiation beam.
False
The target film distance is doubled. In order to maintain a constant density the exposure must be doubled.
False
A spinning top is used to check the calibration of the x-ray unit.
False
A fractional focal spot of .3 is essential for magnification technique.
True
The result of radiation absorption by various tissues within the body, as recorded on a film is known as film-screen contrast.
False
Size distortion increases with an increase in SID.
False
Screen resolution may be expressed in lines per inch.
True
A compensating filter is used to absorb some of the soft long wave length radiation that would be harmful to the patient.
False
Density is measured by an instrument called a sensitometer.
False
If the percentage of light transmitted is 10% the density is 1.
True
If a radiograph demonstrates brilliant black and white tones it is said to have great latitude.
False
Object image receptor has a primary effect upon shape distortion.
False
The parallax effect may be lessened by the use of a thicker emulsion.
False
If proper grid ratio is employed, aluminum filtration may be eliminated from the x-ray beam without danger to the patient.
False
Image definition improves as distance between object and image recptor increases.
False
Image definition improves as distance between the target and image receptor increases.
True
The same factors which increase magnification in radiography also increase definition.
False