ARRT Test Prep, LIMITED X-RAY CORE UPDATED Exam Questions and CORRECT Answers
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Course
Arrt
Institution
Arrt
ARRT Test Prep, LIMITED X-RAY CORE
UPDATED Exam Questions and
CORRECT Answers
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 ma...
ARRT Test Prep, LIMITED X-RAY CORE
UPDATED Exam Questions and
CORRECT Answers
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
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
List the 3 measurements that are more appropriate for measuring absorbed doses for radiation
or occupational dose? - CORRECT ANSWER- Gray (1) - Rad (100)
Seivert (1) - Rem (100)
Curie - Bacquerel
What type of changes are used to measure occupational dose? (3) - CORRECT ANSWER-
Scintillation
Biological
Chemical
Example of personnel monitor that measures radiation thru chemical change reaction? -
CORRECT ANSWER- Film Badge - Operate off Gurney-Mott theory.
Explain the Gurney-Mott Theory...? - CORRECT ANSWER- Describes how an x-ray photon
changes silver halide into atomic silver in the film emulsion--a definite chemical change.
How long can a film badge be worn? - CORRECT ANSWER- No more than a month
Why shouldn't film badges be worn greater than a month? - CORRECT ANSWER- Extreme
sensitivity to environmental conditions.
TLD's operate thru? - CORRECT ANSWER- Luminescence (NO chemical rx's occur)
, Pocket dosimeters can only work for? - CORRECT ANSWER- 1 day and must be reset
everyday.
Upper reading limit of 200-300 rads
Pocket dosimeter uses? - CORRECT ANSWER- Electrical current as a measurement of
charge.
The type of personnel monitor that could be worn the longest is the? - CORRECT ANSWER-
OSD
Optical stimulated detector can be worn up to? - CORRECT ANSWER- 3 months and be
sensitive to 2 mR
Leakage radiation should NOT exceed how much mR at 1 meter from the scource? -
CORRECT ANSWER- 100 mR per hr
0.1 Rad per hr
NCRP 102
According to Bushong, tabletop intensity should NOT exceed what? - CORRECT ANSWER-
2.1 mR per min for each mA operating at 80 kVp.
Under normal modes of operation, fluoroscopic procedures should NOT exceed? -
CORRECT ANSWER- 10 Renkens per min.
What does GSD stand for? - CORRECT ANSWER- Genetic Significant Dose
What is GSD? - CORRECT ANSWER- Average gonadal dose received by an exposed
population. It is used to estimate the genetic impact of medical radiation dose on the entire
population.
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