X-ray Production Quiz C

Bremsstrahlung x-rays are produced by _____ at the target.

• outer shell excitation

• slowing electrons

• K-shell interactions

• L-shell interactions

Answer explanation

Bremsstrahlung x-rays are produced by slowing electrons, not by outer shell excitation, K-shell interactions, or L-shell interactions. When an electron is slowed down or deflected, it releases energy in the form of x-rays, which is what we call Bremsstrahlung x-rays. This makes 'slowing electrons' the correct answer to the question.

Characteristic x-rays are produced by _____.

• braking electrons

• excitation of outer shell electrons

• nuclear fragmentation

• released binding energy

Answer explanation

Characteristic x-rays are produced due to the release of binding energy. This phenomenon happens when an electron from a higher-energy shell fills a vacancy in a lower-energy shell, leading to the emission of energy in the form of an x-ray. This emitted energy is characteristic to the atomic structure of the element, hence the name 'Characteristic x-rays'.

The quantity of bremsstrahlung radiation increases proportionately with increased _____.

• kVp

• mAs

• filtration

• rotor speed

Answer explanation

Bremsstrahlung radiation is directly proportional to the milliampere-seconds (mAs). This means as mAs increases, bremsstrahlung radiation also increases. The other options such as kVp, filtration and rotor speed do not affect bremsstrahlung radiation in the same way. Therefore, the correct answer to the question is 'mAs'.

Tags

NGSS.HS-PS4-3

An exposure taken at 100 kVp would have a continuous emission spectrum with a maximum energy of _____ keV.

• 30

• 69

• 100

• 140

Answer explanation

The question asks for the maximum energy of a continuous emission spectrum at 100 kVp. The maximum energy is indeed 100 keV. This is because in an X-ray tube, the highest energy photon that can be created is equal to the kVp value. Therefore, the correct answer is 100 keV.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

The _____ of an x-ray beam is higher when the peak of the emission spectrum is further to the _____.

• quality, right

• quantity, right

• quality, left

• quantity, left

Tags

NGSS.HS-PS4-4

An increase in mAs would _____ the _____ of the emission spectrum.

• increase, position alone

• increase, amplitude alone

• increase, amplitude and position

• not affect, amplitude and position

Answer explanation

The question asks about the effect of increasing mAs on the emission spectrum. The correct answer is that it will increase the amplitude alone. This is because mAs is a measure of the total quantity of x-ray photons produced in a given exposure, which directly relates to the amplitude of the emission spectrum, not its position.

Tags

NGSS.HS-PS4-3

An increase in kVp would _____ the _____ of the emission spectrum.

• increase, position alone

• increase, amplitude alone

• increase, amplitude and position

• not affect, amplitude and position

Answer explanation

An increase in kVp, kilovolt peak, would influence both the amplitude and position of the emission spectrum. The kVp is directly proportional to the energy of the beam. Therefore, an increased kVp results in higher energy, which increases the amplitude and shifts the position of the emission spectrum.

Changes in _____ result in directly proportional changes in the amplitude of the emission spectrum.

• mA

• time

• kVp

• filtration

Answer explanation

The correct answer is kVp. Changes in kilovoltage peak (kVp) result in directly proportional changes in the amplitude of the emission spectrum. This is because kVp determines the maximum energy of the x-ray beam, which directly impacts the amplitude of the emission spectrum.

The discrete portion of the x-ray emission spectrum would change position with a change in _____.

• kVp

• target material

• voltage ripple

• mAs

Answer explanation

The position of the discrete portion of the x-ray emission spectrum would change with a change in target material. The target material determines the characteristic x-ray spectrum, which includes the discrete portion. Other options like kVp, voltage ripple, or mAs do not directly affect the position of this spectrum.

The amplitude of the emission spectrum with a _____ generator is _____ it is with a three-phase generator.

• single-phase, lower than

• high frequency, lower than

• single-phase, higher than

• single-phase, the same as