QUIZ CHAPTER 6&7 x RAY physics

In a general radiography tube head assembly, added filtration comes in the form of another 0.5 mm Al placed between the target window and the top of the collimator

• True

• False

Which of the following factors affect or influences beam quantity?

1. kVp.

2. Distance.

3. Filtration.

• 1 and 2 only

• 1 and 3 only

• 2 and 3 only

• 1, 2 and 3

The total number of x-ray photons in a beam is referred to as the:

• x-ray quality

• x-ray quantity

• x-ray number

• x-ray beam

The majority of the x-ray photons produced at the target are:

• characteristic photon

• brems photons

• compton photons

• photoelectric photons

The average energy of a brems photon is ______ of the kVp selected at the control panel.

• one half

• one third

• two thirds

• is the same energy

During the bremsstrahlung interaction, the filament electron

• knocks out an inner-shell electron

• knocks out an outer-shell electron

• is attracted to and absorbed by the nucleus

• is attracted to the nucleus but not absorbed

Characteristic x-ray photons result

 

A. when an outer-shell electron is knocked out

B. when an inner-shell electron is knocked out

C. when outer-shell electrons fill the vacancy in an inner shell

• A and B only

• A, B and C

• A and D

• B and C only

filament electron knocks out a K shell electron from the tungsten atom, it results in a _____________ interaction.

• a 39.5 keV energy x-ray photon

• a brems x-ray photon

• a characteristic x-ray photon

• a coherent x-ray photon

At the anode target, ___ of the energy from filament electrons is lost as heat and ___ will result in x-ray production.

• 99%, 1%

• 1%; 99%

• 0%; 100%

electrons from the cathode streams across the tube to slam into the target the x-rays are produced by which interactions:

• coherent and bremsstrahlung interactions

• characteristic and bremsstrahlung interactions

• characteristics and photoelectric interactions