review activity

Question 1

what spectrum demonstrates characteristic photons? Brems?

Answer 1

characteristics: discrete
Brems: continuous

Question 2

what are the two types of emission energies? (broad)

Answer 2

discrete and continuous

Question 3

_______ determines which x-ray spectrum (characteristic or brems) based on it’s x-ray energy

Answer 3

kVp

Question 4

__________ changes the amplitude of an x-ray spectrum

Answer 4

mAs

Question 5

what does mAs control inside the x-ray tube?

Answer 5

tube current; the number of electrons boiled off the filament (controls QUANTITY)

Question 6

what is the charge of the cathode side of the x-ray tube?

Answer 6

negative

Question 7

filament and the focusing cup are what?

Answer 7

two parts of the cathode

Question 8

why do electrons move between the cathode and the anode?

Answer 8

anode has a positive charge and the cathode is a negative (a potential difference exists)

Question 9

in which tissue interaction is an outer-shell electron ejected and the atom is ionized?

Answer 9

Compton scattering

Question 10

true/false: is compton scattering considered radiation?

Answer 10

true

Question 11

what is wave-particle duality?

Answer 11

on the electromagnetic spectrum, photons exhibit wave characteristics when they are lower on the EM spectrum. Photons exhibit particle characteristics on the higher end of the EM spectrum

x-rays move in a sine wave configuration and interacts with matter

Question 12

what is attenuation?

Answer 12

the reduction of intensity or number of photons in the primary x-ray beam

Question 13

photons in the primary beam that are parallel or almost completely parallel to the anode get reabsorbed by the anode

Answer 13

anode heel effect

Question 14

in regards to x-ray tube, why do we use the metal of choice?

Answer 14

tungsten for high melting point

Question 15

the projectile electron is slowed down, breaks, changes, their course and release an x-ray photon is _______

Answer 15

Bremsstrahlung x-ray photon interaction

Question 16

the projectile electron collides with and removes a k-shell electron of the target atom. an outer shell electron then fills the spot and the x-ray is produced

Answer 16

characteristic radiation

Question 17

true/false: in a tungsten target, only k-characteristics are useful for imaging (as it relates to characteristic interactions)

Answer 17

true

Question 18

true/false: the tube housing serves as a thermal cushion to help protect the x-ray tube from heat damage

Answer 18

true

Question 19

in regards to the radiations found on the EM spectrum, I have low frequency, low energy, and a long wavelength, what am I?

Answer 19

non-ionizing radiation

Question 20

true/false: as frequency increases, energy also increases

Answer 20

true: frequency and energy have a direct relationship

Question 21

are both kVp and mAs considered to be the primary factors that determine the quantity of photons?

Answer 21

yes

Question 22

to provide a vacuum and insulation against electric shock is _________

Answer 22

the function of the glass envelope

Question 23

an x-ray photon interacts with an inner shell electron of a tissue atom, and the photon’s energy is entirely absorbed. What is this interaction?

Answer 23

photoelectric interaction

Question 24

true/false: the probability of a Compton interaction depends on the atomic number of the atom involved

Answer 24

False (compton is kVp dependent)

Question 25

true/false: the probability of a photoelectric effect depends on the atomic number of the tissue atom

Answer 25

true