X-ray Production Part 2

Question 1

How many percent of kinetic energy is converted to heat, and _____ % is converted to electromagnetic energy in the form of x-rays. What do you call these x-rays photons.

Answer 1

99%
1%
Bremsstrahlung X-rays

Question 2

True or False

X-rays photons that comprise our x-rays beam is heterogeneous which means that it is composed of varying energy levels.

Answer 2

True

Question 3

True or False

The lower the graph, which means that the most number of x-ray photons emitted per energy level are these energies.

Answer 3

False- highest

Question 4

This emission spectrum represents the x-ray photons emitted as a result of characteristic interaction.

Answer 4

Discrete Emission Spectrum

Question 5

This emission spectrum represents the photons emitted as a result of bremsstrahlung interaction.

Answer 5

Continuous Emission Spectrum

Question 6

The lowest energy is approximately 10-20 KeV, and is a function of _______.

Answer 6

Beam Filtration

Question 7

True or False

Majority of the x-ray photons are emitted with energies 1/3 of the maximum energy.

Answer 7

True

Question 8

True or False

Majority of the x-ray photon that comprises the x-ray beam is of bremsstrahlung origin.

Answer 8

True

Question 9

True or False

The energy of the bremsstrahlung x-rays range from the peak electron energy all the way down to zero.

Answer 9

True

Question 10

It is a technical factor that controls the filament current. One of the technical factors that is manipulated by the radiologic technologist.

Answer 10

mA

Question 11

True or False
A decrease in time of exposure results in a proportionate change in the amplitude (height) of the x-ray emission at all energies.

Answer 11

False-increase

Question 12

True or False

If we double the time of exposure, the quantity of the x-ray photons for all energy level is doubled.

Answer 12

True

Question 13

It is the technical factor that controls the potential difference applied across the x-ray tube.

Answer 13

kVp

Question 14

True or False

The amplitude of curve increases at all energies but there is a great decrease at high energies than at low energies.

Answer 14

False- increase

Question 15

True or False

The increase in the amplitude is not proportionate for all energy levels, but is more pronounced at higher levels.

Answer 15

True

Question 16

True or False (In kVp)
As the kinetic energy of the projectile electron increases, the chances that they will escape interaction with outer shell electron and hit the inner shell electron or come very close to the nucleus of the target atom also increases. This results to an increase also on the amplitude of the curve, which means an increase in the quantity of x-rays photons produced.

Answer 16

True

Question 17

It has something to do with the capacity of the x-ray machine, and has something to do with the type of current and voltage being supplied to the x-ray tube.

Answer 17

Voltage Waveform

Question 18

Operation using high frequency voltage waveform is equivalent to an approximate ____ increase in kVp, and almost a doubling of mAs compared to single-phase power.

Answer 18

12%

Question 19

It is the process of eliminating low energy x-ray photons that will only be absorbed by the patient body and therefore contribute to patient dose.

Answer 19

Filtration