Radiation Protection (Prelim Exam)
UPDATED Exam Questions and
CORRECT Answers
Leakage radiation must be less than ____mR/hr at a distance of 1m from the housing -
CORRECT ANSWER - 100
True or false: A control panel must have a visible signal indicators only - CORRECT
ANSWER - false
The SID indicators must be accurate to within _____ of the indicated SID - CORRECT
ANSWER - 2%
True or false: The x-ray beam and light must coincide within 5% of the SID - CORRECT
ANSWER - false
PBL stands for - CORRECT ANSWER - Positive Beam Limitation
True or false: The image receptor alignment is unnecessary as long as the light field and x-ray
beam are aligned to each other - CORRECT ANSWER - false
The total filtration for 50 to 70 kVp x-ray machine should be - CORRECT ANSWER - 1.5
mm Al equivalent
The added filtration in a 70 kVp x-ray machine should be - CORRECT ANSWER - 1.0
mm Al equivalent
The variation in x-ray intensity should not exceed - CORRECT ANSWER - 5%
, The maximum acceptable variatin in linearity is _____% from 1 mA station to an adjacent mA
station - CORRECT ANSWER - 10%
True or false: The exposure control in a stationary x-ray unit should be atleast 6 feet or 2m cord -
CORRECT ANSWER - false
The SSD in stationary fluoroscope should not be less than ____cm - CORRECT
ANSWER - 38
The SSD in mobile fluoroscope not be less than ____cm - CORRECT ANSWER - 30
The _______ assembly serves as the primary protective barrier in fluoroscopic units -
CORRECT ANSWER - Intensifying screen or image receptor
The primary barrier of fluoroscopic protective units must be ____ Pb equivalent - CORRECT
ANSWER - 2 mm
The total filtration of a fluoroscopic unit must be at least - CORRECT ANSWER - 2.5 mm
Al equivalent
True or false: An unexposed border should be visible in the image receptor - CORRECT
ANSWER - True
The fluorsocopic exposure control should be the _______ type - CORRECT ANSWER -
dead man
The recommended bucky slot should be _______ equivalent - CORRECT ANSWER -
0.25 mm Pb
What fluoroscopic protective feature is placed between the patient and the fluoroscopist -
CORRECT ANSWER - Protective curtain
UPDATED Exam Questions and
CORRECT Answers
Leakage radiation must be less than ____mR/hr at a distance of 1m from the housing -
CORRECT ANSWER - 100
True or false: A control panel must have a visible signal indicators only - CORRECT
ANSWER - false
The SID indicators must be accurate to within _____ of the indicated SID - CORRECT
ANSWER - 2%
True or false: The x-ray beam and light must coincide within 5% of the SID - CORRECT
ANSWER - false
PBL stands for - CORRECT ANSWER - Positive Beam Limitation
True or false: The image receptor alignment is unnecessary as long as the light field and x-ray
beam are aligned to each other - CORRECT ANSWER - false
The total filtration for 50 to 70 kVp x-ray machine should be - CORRECT ANSWER - 1.5
mm Al equivalent
The added filtration in a 70 kVp x-ray machine should be - CORRECT ANSWER - 1.0
mm Al equivalent
The variation in x-ray intensity should not exceed - CORRECT ANSWER - 5%
, The maximum acceptable variatin in linearity is _____% from 1 mA station to an adjacent mA
station - CORRECT ANSWER - 10%
True or false: The exposure control in a stationary x-ray unit should be atleast 6 feet or 2m cord -
CORRECT ANSWER - false
The SSD in stationary fluoroscope should not be less than ____cm - CORRECT
ANSWER - 38
The SSD in mobile fluoroscope not be less than ____cm - CORRECT ANSWER - 30
The _______ assembly serves as the primary protective barrier in fluoroscopic units -
CORRECT ANSWER - Intensifying screen or image receptor
The primary barrier of fluoroscopic protective units must be ____ Pb equivalent - CORRECT
ANSWER - 2 mm
The total filtration of a fluoroscopic unit must be at least - CORRECT ANSWER - 2.5 mm
Al equivalent
True or false: An unexposed border should be visible in the image receptor - CORRECT
ANSWER - True
The fluorsocopic exposure control should be the _______ type - CORRECT ANSWER -
dead man
The recommended bucky slot should be _______ equivalent - CORRECT ANSWER -
0.25 mm Pb
What fluoroscopic protective feature is placed between the patient and the fluoroscopist -
CORRECT ANSWER - Protective curtain
