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Camrt Exam 2023 /150 Questions With Verified Answers
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Camrt Exam 2023 /150 Questions With VerifiedAnswers
Quiz :How far away must the operator stand from the xray tube if not covered
with lead? - Answer :3 meters
Quiz :90% of man made radiation to the population is related to? -
Answer :Medical Radiography and Dental
Quiz :For each peak xray voltage, what lead equivalent is required?
100kV or less (o-100)
Between 101kV-149kV
150kV or greater (150+) - Answer :0-100kV = 0.25mm of lead
Greater than 100kV but less then 150kV = 0.35mm of lead
150kV or greater = 0.50mm of lead
Quiz :What protective equipment is required during interventional procedures
- Answer :Full wrap around protective gowns of 0.50mm pb in the front panels
and 0.25mm pb in the back panels
Thyroid shields with an equivalent of 0.50mm of pb
Lead drapes/curtains mounted to II of 0.25mm of pb at 100kv
Quiz :What lead equivalent must protective gloves/ gauntlets possess? -
Answer :0.25mm of pb
Quiz :What lead equivalent must ceiling mounted lead screens and moveable
shields provide? - Answer :0.50mm of pb
Quiz :What are the annual radiation dose limits for radiation workers? -
Answer :Whole body= 20mSv
Lens of eye= 150mSv
Skin = 500mSv
Hands = 150mSv
All other organs = 500mSv
,For pregnant women an effective dose of 4 mSv must be applied for the
remainder of the pregnancy from all sources
Quiz :What are the annual radiation dose limits to members of the public? -
Answer :Whole body = 1mSv
Lens of the eye= 15mSv
Skin = 50mSv
Hands = 50mSv
All other organs = 50mSv
*these also apply for students*
Quiz :What are primary protective barriers? Give examples - Answer :Primary
barriers provide shielding from the direct xray beam. Such as, the walls and
floor where the tube can be directed
-The wall behind the wall bucky
-Floor under the table
Quiz :What are secondary barriers and give examples - Answer :Provide
shielding against both leakage and scattered radiation. Walls that the primary
beam is not directed towards and the ceiling are secondary barriers.
The control booth is also a secondary barrier, the primary beam should never
be directed towards it.
Quiz :What should the focal spot to skin distance be for:
-Mobile equipment
-Stationary equipment
-Radioscopic equipment - Answer :Must not be less than:
-Mobile: 30cm
-Stationary: 38cm
-Radioscopic: 20cm (designed for special procedures that would be impossible
at 30cm or 38cm)
Quiz :What are the maximum air kerma rates for radioscopic equipment:
-with automatic intensity control
, -without AIC - Answer :Not equipped with AIC: 50mGy/min
With AIC: 100mGy/min
Quiz :The air kerma rate must not exceed ___ from scattered radiation of
radioscopic equipment - Answer :2 mGy/h
Quiz :HVL of Aluminum for given tube voltages? (70kV-150kV) - Answer :70:
2.5mm
80: 2.9mm
90: 3.2mm
100: 3.6mm
110: 3.9mm
120: 4.3mm
130: 4.7mm
140: 5.0mm
150: 5.4mm
Quiz :How frequently should IP's and cassettes be cleaned and inspected? -
Answer :Cleaned: monthly
Visual inspection: Weekly
Quiz :What are daily QC tests for CR/DR/Fluoro/CT equipment - Answer :-
Warm up (all)
-Meter operation (all)
-Equipment condition (all)
-System movements (fluoro)
-Visual assessment of electronic display devices (all)
Quiz :What are weekly QC tests for CR/DR/Fluoro/CT equipment - Answer :-
Visual inspection of cleanliness of system (all)
-Laser film printer operation (all)
-CT # accuracy
-CT noise
-CT uniformity
Quiz :What are monthly QC tests for CR/DR/Fluoro/CT equipment - Answer :-
Cassette, screen, IP plate cleaning (CR)
-Retake analysis (CR/DR)
-Electronic display device performance (all)
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