Prelims

Question 1

Leakage radiation must be less than _____ mR/hr at a distance of 1m from the housing

Answer 1

100

Question 2

True or false: A control panel msut have a visible signal indicators only.

Answer 2

False, a control panel msut have a audible/visible signal indicators

Question 3

The SID indicators must be accurate to within ____ of the indicated SID

Answer 3

2%

Question 4

True or false: The x-ray beam and light must coincide within 5% of the SID

Answer 4

false

Question 5

PBL stands for

Answer 5

Positive Beam Limitation

Question 6

True or false: The image receptor alignment is unnecesarry as long as the light field and x-ray beam are aligned to each other

Answer 6

false

Question 7

The total filtration for 50 to 70 kVp x-ray machine should be

Answer 7

1.5 mm Al equivalent

Question 8

The added filtration in a 70 kVP x-ray machine should be

Answer 8

1.0 mm Al equivalent

Question 9

The variation in x-ray intensity should not exceed

Answer 9

5%

Question 10

The maximum acceptable variation in linearity is ___% from 1 mA station to an adjacent mA station

Answer 10

10%

Question 11

True or false: The exposure control in a stationary x-ray unit should be atleast 6 feet or 2 m cord

Answer 11

False

Question 12

The SSD in stationary fluoroscope should not be less than ___cm

Answer 12

38

Question 13

The SSD in mobile fluorsocope should not be less than ___ cm

Answer 13

30

Question 14

The _______ assembly serves as the primary protective barrier in fluoroscopic units

Answer 14

Intensifying screen or Image receptor

Question 15

The primary barries of fluoroscopic protective units must be ____ Pb equivalent

Answer 15

2 mm

Question 16

The total filtration of a fluoroscopic unit must be at least ___

Answer 16

2.5 mm Al equivalent

Question 17

True or false: An unexposed border should be visible in the image monitor

Answer 17

True

Question 18

The fluoroscopic exposure control should be the ___________ type

Answer 18

dead man

Question 19

The recommended bucky slot shoudl be _______ equivalent

Answer 19

0.25 mm Pb

Question 20

What fluoroscopic protective feature is placed between the patient and the fluoroscopist

Answer 20

Protective curtain

Question 21

The removal or additional of an electron from an orbital shell of an atom is termed as

Answer 21

Ionization

Question 22

Diagnostic x-ray is a source of what type of ionzing radiation

Answer 22

Man-made radiation

Question 23

Ionzing radiation from heavenly bodies are categorized as which natural-environmental source of radiation

Answer 23

Cosmic ray

Question 24

The largest source of natural-environmental radiation exposure

Answer 24

Radon

Question 25

What radioactive isotope is present on the human body, specifically within the bones and is considered as a natural metabolite

Answer 25

K-40

Question 26

Which electromagnetic radiation is abundant in the sunlight

Answer 26

UV rays

Question 27

The largest naturally occuring element is

Answer 27

Uranium

Question 28

Uranium decays into which element

Answer 28

thorium

Question 29

Radon contributes to how much dose of background radiation annually

Answer 29

2 mSv/year

Question 30

What is the largest source of man-made radiation exposure?

Answer 30

Diagnostic x-ray

Question 31

Industrial sources of radiation contributes to how much dose per year

Answer 31

2.5 mSv/year

Question 32

4 sources of natural-environmental radiation

Answer 32

Cosmic ray
Terrestrial radiation
Internally Deposited Radionucleids
Radon

Question 33

5 sources of man-made radiaiton

Answer 33

DIagnostic x-ray
Nuclear Power Generation
Research Application
Industrial Sources
Consumer Items

Question 34

3 primary sources of radon

Answer 34

Bricks
Gypsum wallboard
Concrete

Question 35

2 forms of Radon

Answer 35

Soil
Gas

Question 36

Leakge radiation must be less than ___ mGya/hr at a distance of 1m from the protective housing

Answer 36

1