Exposure Factors/Technique Factors

Question 1

Controls the energy (penetrating power) of the x-ray beam

Answer 1

Kilovoltage (Kvp)

Question 2

Controls the quantity or number of x-rays produced

Answer 2

Milliamperage (mA)

Question 3

Controls the duration of the exposure, usually expressed in milliseconds

Answer 3

Exposure time (ms)

Question 4

Quantity of x-rays produced in the time that is set

Answer 4

Milliampere Seconds (mAs)

Question 5

Computer picks the mAs with a preset kVp

Answer 5

Automatic Exposure Control (AEC)

Question 6

Distance of the tube from the image receptor, affecting magnification

Answer 6

Source Image Receptor Distance (SID)

Question 7

A misrepresentation of object size or shape as projected onto radiographic recording media

Answer 7

Distortion

Question 8

Distance between the object to the detector

Answer 8

Object Image Receptor Distance (OID)

Question 9

The greater the SID means what about the magnification

Answer 9

Lesser

Question 10

Series of “boxes” that give form to the image

Answer 10

Matrix

Question 11

Intensity of light that represents the individual pixels in the image on the monitor

Answer 11

Brightness

Question 12

A numeric representation of the x-ray intensities that are transmitted through the patient

Answer 12

Digital Images

Question 13

Misrepresentation of object size or shape as projected onto radiographic recording media

Answer 13

Distortion

Question 14

Highly complex mathematical formulas involved in digital processing

Answer 14

Algorithms

Question 15

Numerical value that represents the exposure the image receptor receives in digital imaging

Answer 15

Exposure Indicator Number

Question 16

Random disturbance that obscures or reduces clarity on a digital image

Answer 16

Noise

Question 17

The recorded sharpness or detail of structural edges in the image

Answer 17

Spatial resolution

Question 18

The difference in brightness between light and dark areas of an image (shades of gray)

Answer 18

Contrast resolution

Question 19

A decrease in SID will reduce magnification (T/F) Why?

Answer 19

False because Increase the SID will reduce magnification

Question 20

Shape distortion is caused when the part angled or is not running parallel to the surface of the IR
What are the two distortion? (T/F)

Answer 20

True - Elongation and Foreshortening

Question 21

As the distance between the object and the image receptor is increased, magnification is reduced. WHy? (T/F)

Answer 21

False because the magnification is increased

Question 22

Elongation occurs when the tube is angled(T/F)

Answer 22

True

Question 23

A grid is used when the part is measured greater than 10cm (T/F)

Answer 23

True

Question 24

ALARA is acronym for? 3 ways to help with radiation

Answer 24

As Low As Reasonably Achievable. Time Distance Shielding