ARRT Test Prep, LIMITED X-RAY CORE || 100% verified
solutions.
Main property of x-radiation that makes it potentially hazardous is its ability to? correct answers
Ionize
Describe the damage potential of ionization? correct answers 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 answers
Carcinogenesis - Stochastic/Non-Threshold Effect
.1 Rem = ? Seivert correct answers 1 Sievert
0.1 Gray = ? Rad correct answers 10 Rad
1 Gray = ? Rad correct answers 100 Rad
What is Aplastic Anemia? When dose it occur? correct answers 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 answers 25 Rads or .25 Gray
What is Cataractogenesis? correct answers Process of Cataract Formation
,Cataractogenesis occurs after acute or chronic exposures of how many Rads? correct answers
200 Rads, 2 Gray
Skin Eyrythemia (Skin Redning) occurs above? correct answers Above 200 Rad, 2 Gray
Temporary Sterility occurs in the adult male at acute doses of how many Rads? correct answers
250 Rads, 2.5 Gray
Pregnant radiographer should? (3) correct answers 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 answers OCCUPATIONAL exposures only.
Monthly Dosimeter reports does NOT include? correct answers Natural or Background Radiation
What is the recommended monthly dose-equivalent limit for the fetus in the third trimester?
correct answers 0.5 mSv
.05 Rem
NRCP 116
Radiation workers cumulative dose-equivalent limit is determined by? correct answers 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 answers 50 mSv (5 Rem)
,When using a C-Arm mobile unit, the intensification tower should be? correct answers As close
as possible to the patient to reduce patient dose and unnecessary magnification.
Radiation exposure in air = ? correct answers 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 answers Ion Chamber
The quantity of radiation exposure measured by an ionization chamber would be? correct
answers Coulomb/Kilogram
The C/Kg or R is usually the unit measured in? correct answers Air dose
List the 3 measurements that are more appropriate for measuring absorbed doses for radiation or
occupational dose? correct answers Gray (1) - Rad (100)
Seivert (1) - Rem (100)
Curie - Bacquerel
What type of changes are used to measure occupational dose? (3) correct answers Scintillation
Biological
Chemical
Example of personnel monitor that measures radiation thru chemical change reaction? correct
answers Film Badge - Operate off Gurney-Mott theory.
Explain the Gurney-Mott Theory...? correct answers 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 answers No more than a month
, Why shouldn't film badges be worn greater than a month? correct answers Extreme sensitivity to
environmental conditions.
TLD's operate thru? correct answers Luminescence (NO chemical rx's occur)
Pocket dosimeters can only work for? correct answers 1 day and must be reset everyday.
Upper reading limit of 200-300 rads
Pocket dosimeter uses? correct answers Electrical current as a measurement of charge.
The type of personnel monitor that could be worn the longest is the? correct answers OSD
Optical stimulated detector can be worn up to? correct answers 3 months and be sensitive to 2
mR
Leakage radiation should NOT exceed how much mR at 1 meter from the scource? correct
answers 100 mR per hr
0.1 Rad per hr
NCRP 102
According to Bushong, tabletop intensity should NOT exceed what? correct answers 2.1 mR per
min for each mA operating at 80 kVp.
Under normal modes of operation, fluoroscopic procedures should NOT exceed? correct answers
10 Renkens per min.
What does GSD stand for? correct answers Genetic Significant Dose
solutions.
Main property of x-radiation that makes it potentially hazardous is its ability to? correct answers
Ionize
Describe the damage potential of ionization? correct answers 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 answers
Carcinogenesis - Stochastic/Non-Threshold Effect
.1 Rem = ? Seivert correct answers 1 Sievert
0.1 Gray = ? Rad correct answers 10 Rad
1 Gray = ? Rad correct answers 100 Rad
What is Aplastic Anemia? When dose it occur? correct answers 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 answers 25 Rads or .25 Gray
What is Cataractogenesis? correct answers Process of Cataract Formation
,Cataractogenesis occurs after acute or chronic exposures of how many Rads? correct answers
200 Rads, 2 Gray
Skin Eyrythemia (Skin Redning) occurs above? correct answers Above 200 Rad, 2 Gray
Temporary Sterility occurs in the adult male at acute doses of how many Rads? correct answers
250 Rads, 2.5 Gray
Pregnant radiographer should? (3) correct answers 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 answers OCCUPATIONAL exposures only.
Monthly Dosimeter reports does NOT include? correct answers Natural or Background Radiation
What is the recommended monthly dose-equivalent limit for the fetus in the third trimester?
correct answers 0.5 mSv
.05 Rem
NRCP 116
Radiation workers cumulative dose-equivalent limit is determined by? correct answers 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 answers 50 mSv (5 Rem)
,When using a C-Arm mobile unit, the intensification tower should be? correct answers As close
as possible to the patient to reduce patient dose and unnecessary magnification.
Radiation exposure in air = ? correct answers 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 answers Ion Chamber
The quantity of radiation exposure measured by an ionization chamber would be? correct
answers Coulomb/Kilogram
The C/Kg or R is usually the unit measured in? correct answers Air dose
List the 3 measurements that are more appropriate for measuring absorbed doses for radiation or
occupational dose? correct answers Gray (1) - Rad (100)
Seivert (1) - Rem (100)
Curie - Bacquerel
What type of changes are used to measure occupational dose? (3) correct answers Scintillation
Biological
Chemical
Example of personnel monitor that measures radiation thru chemical change reaction? correct
answers Film Badge - Operate off Gurney-Mott theory.
Explain the Gurney-Mott Theory...? correct answers 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 answers No more than a month
, Why shouldn't film badges be worn greater than a month? correct answers Extreme sensitivity to
environmental conditions.
TLD's operate thru? correct answers Luminescence (NO chemical rx's occur)
Pocket dosimeters can only work for? correct answers 1 day and must be reset everyday.
Upper reading limit of 200-300 rads
Pocket dosimeter uses? correct answers Electrical current as a measurement of charge.
The type of personnel monitor that could be worn the longest is the? correct answers OSD
Optical stimulated detector can be worn up to? correct answers 3 months and be sensitive to 2
mR
Leakage radiation should NOT exceed how much mR at 1 meter from the scource? correct
answers 100 mR per hr
0.1 Rad per hr
NCRP 102
According to Bushong, tabletop intensity should NOT exceed what? correct answers 2.1 mR per
min for each mA operating at 80 kVp.
Under normal modes of operation, fluoroscopic procedures should NOT exceed? correct answers
10 Renkens per min.
What does GSD stand for? correct answers Genetic Significant Dose
