brake book questions

Question 1

In what year were x-rays discovered?

Answer 1

1895

Question 2

In what year were some of the biologically damaging effects of x-rays discovered?

Answer 2

1901

Question 3

X-rays were discovered in experiments dealing with electricity and

Answer 3

vacuum tubes

Question 4

X-rays were discovered when they caused a barium platinocyanide-coated plate to

Answer 4

fluoresce

Question 5

X-radiation is part of which spectrum?

Answer 5

radiation

Question 6

X-rays have a dual nature, which means that they behave like both

Answer 6

waves and particles

Question 7

The wavelength and frequency of x-rays are related

Answer 7

inversely

Question 8

X-rays have what electrical charge

Answer 8

no

Question 9

X-rays have what mass?

Answer 9

no mass

Question 10

the x-ray beam used in diagnostic radiography can be described as being

Answer 10

polyenergetic

Question 11

Which x-ray tube Component serves as a source of electrons for x-ray production?

Answer 11

filament

Question 12

Electrons interact with the _______to produce x-rays and heat.

Answer 12

target

Question 13

The cloud of electrons that form before x-ray production is referred to as

Answer 13

space charge

Question 14

the burning or boiling off of electrons at the cathode is referred to as

Answer 14

thermionic emission

Question 15

Which primary exposure factor influences both the quantity and the quality of x-ray photons?

Answer 15

kVP

Question 16

The unit used to express tube current is

Answer 16

mA

Question 17

What percentage of the kinetic energy is converted to heat when moving electrons strike the anode target?

Answer 17

99%

Question 18

The intensity of the x-ray beam is greater on the

Answer 18

cathode side of the tube

Question 19

According to the line focus principle, as the target angle decreases, the

Answer 19

effective focal spot size decreases

Question 20

__________ extends x-rays tube life

Answer 20

Warming up the tube after 2 hours of nouse

Question 21

Which type of target interaction is responsible for most of the x-rays in the diagnostic beam?

Answer 21

Bremsstrahlung interaction

Question 22

How much mAs is produced when the radiographer sets 70kVp, 600mA, and 50ms?

Answer 22

30mAs

Question 23

Increasing the kVp results in

Answer 23

x-rays with higher energy

more x-rays

Question 24

Total filtration in the x-ray beam includes

Answer 24

inherent filtration

added filtration

Question 25

The process whereby the radiographic image is created by variations in absorption and transmission of the exiting x-ray beam is known as

Answer 25

differential absorption

Question 26

Which of the following process occur during the x-ray beam interaction with tissue?

Answer 26

absorption
photon transmission
scattering

Question 27

The ability of an x-ray photon to remove an atom’s electron is a characteristic known as

Answer 27

ionization

Question 28

The x-ray interaction responsible for absorption is

Answer 28

photoelectric

Question 29

The x-ray interaction responsible for scattering is

Answer 29

compton

Question 30

Remnant radiation is composed of which of the following?

Answer 30

transmitted radiation

scattered radiation

Question 31

What interaction creates unwanted exposure to the image, known as fog?

Answer 31

compton

Question 32

Which of the following factors would affect beam attenuation

Answer 32

tissue atomic number

beam quality

Question 33

The low-density or high brightness areas on a radiographic image are created by

Answer 33

absorbed radiation

Question 34

An anatomic part that transmits the incoming x-ray photon would create an area of _________ on the radiographic image

Answer 34

high density or low brightness

Question 35

The process of creating a radiographic image by differential absorption varies for film-screen and digital imaging (true/false)

Answer 35

false

Question 36

An attribute of a radiographic image that affects the visibility

Answer 36

contrast and density

Question 37

A radiographic film image with many densities but little differences among them is said to have

Answer 37

low contrast

Question 38

Which of the following would improve digital image quality?

Answer 38

large matrix and increased pixel density