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CAMRT EXAM 2024 WITH 100% CORRECT ANSWERS
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How far away must the operator stand from the xray tube if not covered with lead? - correct answer 3 meters 90% of man made radiation to the population is related to? - correct answer Medical Radiography and Dental For each peak xray voltage, what lead equivalent is required? 100kV or ...

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  • January 13, 2024
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  • 2023/2024
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CAMRT EXAM 2024 WITH 100%
CORRECT ANSWERS

How far away must the operator stand from the xray tube if not covered with lead? - correct answer 3
meters



90% of man made radiation to the population is related to? - correct answer Medical Radiography and
Dental



For each peak xray voltage, what lead equivalent is required?



100kV or less (o-100)

Between 101kV-149kV

150kV or greater (150+) - correct 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



What protective equipment is required during interventional procedures - correct 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



What lead equivalent must protective gloves/ gauntlets possess? - correct answer 0.25mm of pb

,What lead equivalent must ceiling mounted lead screens and moveable shields provide? - correct
answer 0.50mm of pb



What are the annual radiation dose limits for radiation workers? - correct 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



What are the annual radiation dose limits to members of the public? - correct answer Whole body =
1mSv

Lens of the eye= 15mSv

Skin = 50mSv

Hands = 50mSv

All other organs = 50mSv



*these also apply for students*



What are primary protective barriers? Give examples - correct 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



What are secondary barriers and give examples - correct 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.



What should the focal spot to skin distance be for:



-Mobile equipment

-Stationary equipment

-Radioscopic equipment - correct answer Must not be less than:



-Mobile: 30cm

-Stationary: 38cm

-Radioscopic: 20cm (designed for special procedures that would be impossible at 30cm or 38cm)



What are the maximum air kerma rates for radioscopic equipment:



-with automatic intensity control

-without AIC - correct answer Not equipped with AIC: 50mGy/min



With AIC: 100mGy/min



The air kerma rate must not exceed ___ from scattered radiation of radioscopic equipment - correct
answer 2 mGy/h



HVL of Aluminum for given tube voltages? (70kV-150kV) - correct answer 70: 2.5mm

80: 2.9mm

90: 3.2mm

100: 3.6mm

110: 3.9mm

120: 4.3mm

130: 4.7mm

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