ARRT Test Prep, LIMITED X-RAY CORE WITH QUESTIONS
AND 100% SURE ANSWERS
Main property of x-radiation that makes it Ionize
potentially hazardous is its ability to?
Chain reaction in the human body that may eventually cause biologic damage. X-rays
Describe the damage potential of
are from the Electric Magnetic Spectrum or radiation energy and is considered
ionization?
harmful in high energy ranges.
What is the most likely potential hazard Carcinogenesis - Stochastic/Non-Threshold Effect
working with diagnostic radiology?
.1 Rem = ? Seivert 1 Sievert
0.1 Gray = ? Rad 10 Rad
1 Gray = ? Rad 100 Rad
What is Aplastic Anemia? When dose it All types of blood cells: Red & White
occur? 25 Rads
A decrease in blood count is the earliest 25 Rads or .25 Gray
response seen to dose radiation. It can
occur at dosease as low as?
What is Cataractogenesis? Process of Cataract Formation
Cataractogenesis occurs after acute or 200 Rads, 2 Gray
chronic exposures of how many Rads?
Temporary Sterility occurs in the adult male 250 Rads, 2.5 Gray
at acute doses of how many Rads?
Always practice TDS
Pregnant radiographer should? (3) Has legal right for re-assignment of duty
Never confuse collar badge with waist badge
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, 10/6/24, 6:16 AM
Monthly dosimetry reports is based on OCCUPATIONAL exposures only.
what?
Monthly Dosimeter reports does NOT Natural or Background Radiation
include?
What is the recommended monthly dose- 0.5 mSv
equivalent limit for the fetus in the third .05 Rem
trimester? NRCP 116
Age x 10 mSv
Radiation workers cumulative dose-
Age x 1 Rem
equivalent limit is determined by?
NCRP 110
What is the Occupational radiation dose 50 mSv (5 Rem)
equivalent limit for stochastic effects to the
whole body?
When using a C-Arm mobile unit, the As close as possible to the patient to reduce patient dose and unnecessary
intensification tower should be? magnification.
Radiation exposure in air = ? Roentgens - Ionization in air dose measurement.
Electrical current being generated by a Ion Chamber
charge created in air thru ionization by
x/gamma radiation is called a?
The quantity of radiation exposure Coulomb/Kilogram
measured by an ionization chamber would
be?
The C/Kg or R is usually the unit measured Air dose
in?
List the 3 measurements that are more Gray (1) - Rad (100)
appropriate for measuring absorbed doses Seivert (1) - Rem (100)
for radiation or occupational dose? Curie - Bacquerel
Scintillation
What type of changes are used to measure
Biological
occupational dose? (3)
Chemical
Example of personnel monitor that Film Badge - Operate off Gurney-Mott theory.
measures radiation thru chemical change
reaction?
Describes how an x-ray photon changes silver halide into atomic silver in the film
Explain the Gurney-Mott Theory...?
emulsion--a definite chemical change.
How long can a film badge be worn? No more than a month
Why shouldn't film badges be worn greater Extreme sensitivity to environmental conditions.
than a month?
TLD's operate thru? Luminescence (NO chemical rx's occur)
1 day and must be reset everyday.
Pocket dosimeters can only work for?
Upper reading limit of 200-300 rads
Pocket dosimeter uses? Electrical current as a measurement of charge.
The type of personnel monitor that could OSD
be worn the longest is the?
Optical stimulated detector can be worn 3 months and be sensitive to 2 mR
up to?
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