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QUIZ CHAPTER 6&7 x RAY physics

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

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

a)

True

b)

False

2.

Which of the following factors affect or influences beam quantity?

  1. kVp.

  2. Distance.

  3. Filtration.

a)

1 and 2 only

b)

1 and 3 only

c)

2 and 3 only

d)

1, 2 and 3

3.

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

a)

x-ray quality

b)

x-ray quantity

c)

x-ray number

d)

x-ray beam

4.

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

a)

characteristic photon

b)

brems photons

c)

compton photons

d)

photoelectric photons

5.

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

a)

one half

b)

one third

c)

two thirds

d)

is the same energy

6.

During the bremsstrahlung interaction, the filament electron

a)

knocks out an inner-shell electron

b)

knocks out an outer-shell electron

c)

is attracted to and absorbed by the nucleus

d)

is attracted to the nucleus but not absorbed

7.

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)

A and B only

b)

A, B and C

c)

A and D

d)

B and C only

8.

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

a)

a 39.5 keV energy x-ray photon

b)

a brems x-ray photon

c)

a characteristic x-ray photon

d)

a coherent x-ray photon

9.

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

a)

99%, 1%

b)

1%; 99%

c)

0%; 100%

10.

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

a)

coherent and bremsstrahlung interactions

b)

characteristic and bremsstrahlung interactions

c)

characteristics and photoelectric interactions

11.

To increase the quantity of radiation by adjusting the kVp to the same level as doubling the mAs, increase kVp by a factor of

a)

15%

b)

10%

c)

30%

d)

25%

12.

As the distance increases, the beam quantity reaching a specific area:

a)

decreases

b)

increases