answers(Actual test 100% verified)
Main property of x-radiation that makes it potentially hazardous is its ability to?
- CORRECT ANSWER Ionize
Describe the damage potential of ionization? - CORRECT ANSWER Chain
reaction in the human body that may eventually cause biologic damage. X-rays
are from the Electric Magnetic Spectrum or radiation energy and is considered
harmful in high energy ranges.
What is the most likely potential hazard working with diagnostic radiology? -
CORRECT ANSWER Carcinogenesis - Stochastic/Non-Threshold Effect
.1 Rem = ? Seivert - CORRECT ANSWER 1 Sievert
0.1 Gray = ? Rad - CORRECT ANSWER 10 Rad
1 Gray = ? Rad - CORRECT ANSWER 100 Rad
What is Aplastic Anemia? When dose it occur? - CORRECT ANSWER All types of
blood cells: Red & White
25 Rads
,A decrease in blood count is the earliest response seen to dose radiation. It can
occur at dosease as low as? - CORRECT ANSWER 25 Rads or .25 Gray
What is Cataractogenesis? - CORRECT ANSWER Process of Cataract Formation
Cataractogenesis occurs after acute or chronic exposures of how many Rads? -
CORRECT ANSWER 200 Rads, 2 Gray
Skin Eyrythemia (Skin Redning) occurs above? - CORRECT ANSWER Above 200
Rad, 2 Gray
Temporary Sterility occurs in the adult male at acute doses of how many Rads? -
CORRECT ANSWER 250 Rads, 2.5 Gray
Pregnant radiographer should? (3) - CORRECT ANSWER Always practice TDS
Has legal right for re-assignment of duty
Never confuse collar badge with waist badge
Monthly dosimetry reports is based on what? - CORRECT ANSWER
OCCUPATIONAL exposures only.
Monthly Dosimeter reports does NOT include? - CORRECT ANSWER Natural or
Background Radiation
What is the recommended monthly dose-equivalent limit for the fetus in the
third trimester? - CORRECT ANSWER 0.5 mSv
, .05 Rem
NRCP 116
Radiation workers cumulative dose-equivalent limit is determined by? -
CORRECT ANSWER Age x 10 mSv
Age x 1 Rem
NCRP 110
What is the Occupational radiation dose equivalent limit for stochastic effects to
the whole body? - CORRECT ANSWER 50 mSv (5 Rem)
When using a C-Arm mobile unit, the intensification tower should be? -
CORRECT ANSWER As close as possible to the patient to reduce patient dose
and unnecessary magnification.
Radiation exposure in air = ? - CORRECT ANSWER Roentgens - Ionization in air
dose measurement.
Electrical current being generated by a charge created in air thru ionization by
x/gamma radiation is called a? - CORRECT ANSWER Ion Chamber
The quantity of radiation exposure measured by an ionization chamber would
be? - CORRECT ANSWER Coulomb/Kilogram
The C/Kg or R is usually the unit measured in? - CORRECT ANSWER Air dose