Radiographic Exposure General Review 2

Front 1

An increase of 30 kV would increase contrast.

Back 1

False

Front 2

If the mA is increased from 100 to 200 and the time is cut in half, the density will remain the same.

Back 2

True

Front 3

If the mAs is increased the density will increase.

Back 3

True

Front 4

If the object-film distance is increased magnification will increase.

Back 4

True

Front 5

If the SID is increased magnification will decrease.

Back 5

True

Front 6

If an 8:1 grid is replaced with a 16:1 grid radiographic density will increase.

Back 6

False

Front 7

If high speed screens are replaced with slower screens detail will decrease.

Back 7

False

Front 8

Primary radiation is that radiation which emerges from the patient to exposure the film

Back 8

False

Front 9

The importance of high-ration grids in the control of secondary radiation is that they filter out all of the secondary radiation.

Back 9

False

Front 10

Detail is decreased by decreasing the kV 15% and doubling the mAs.

Back 10

False

Front 11

An increase in grid ratio would result in an increase in the amount of secondary radiation absorbed.

Back 11

True

Front 12

If a small focal spot is used, the penumbra will increase.

Back 12

False

Front 13

The function of contrast in a radiograph is to make detail visible.

Back 13

True

Front 14

A spinning top can be used to measure the penetrating power of the radiation beam.

Back 14

False

Front 15

The target film distance is doubled. In order to maintain a constant density the exposure must be doubled.

Back 15

False

Front 16

A spinning top is used to check the calibration of the x-ray unit.

Back 16

False

Front 17

A fractional focal spot of .3 is essential for magnification technique.

Back 17

True

Front 18

The result of radiation absorption by various tissues within the body, as recorded on a film is known as film-screen contrast.

Back 18

False

Front 19

Size distortion increases with an increase in SID.

Back 19

False

Front 20

Screen resolution may be expressed in lines per inch.

Back 20

True

Front 21

A compensating filter is used to absorb some of the soft long wave length radiation that would be harmful to the patient.

Back 21

False

Front 22

Density is measured by an instrument called a sensitometer.

Back 22

False

Front 23

If the percentage of light transmitted is 10% the density is 1.

Back 23

True

Front 24

If a radiograph demonstrates brilliant black and white tones it is said to have great latitude.

Back 24

False

Front 25

Object image receptor has a primary effect upon shape distortion.

Back 25

False

Front 26

The parallax effect may be lessened by the use of a thicker emulsion.

Back 26

False

Front 27

If proper grid ratio is employed, aluminum filtration may be eliminated from the x-ray beam without danger to the patient.

Back 27

False

Front 28

Image definition improves as distance between object and image recptor increases.

Back 28

False

Front 29

Image definition improves as distance between the target and image receptor increases.

Back 29

True

Front 30

The same factors which increase magnification in radiography also increase definition.

Back 30

False