ARRT TEST PREP LIMITED X-RAY
CORE REAL EXAM QUESTIONS
WITH DETAILED VERIFIED
ANSWERS ALREADY GRADED A+
LATEST VERSION 2026 BRAND
NEW!
"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."
"Beam limiting devices will? (3) - CORRECT ANSWER=> Improve image quality
Reduce patient dose
Reduce scatter radiation"
Page | 1
,"The purpose of reducing added filtration is to reduce radiation dose to? - CORRECT ANSWER=>
Patients skin"
"Recommended amount of filtration in Fluoro? - CORRECT ANSWER=> 3 mm Al Equivalent"
"Disadvantage to having 3 mm Al Equivalent? - CORRECT ANSWER=> Would require an increase
in technical factors defeating the purpose of filtration."
"What is the usual amount of filtration in Fluoro? - CORRECT ANSWER=> 2.5 mm Al Equivalent"
"What effect does excessive filtration have on xray image? - CORRECT ANSWER=> Reduced
contrast"
"# of grid lines per inch or centimeter defines? - CORRECT ANSWER=> Grid Frequency"
"For all dedicated chest units whose tube potential routinely exceeds 90 kVp, the minimum
recommended grid ratio is? - CORRECT ANSWER=> 8:1"
"Techniques below or at 90 kVp would utilize what grid ratio? - CORRECT ANSWER=> 8:1"
"Techniques above 90 kVp would utilize what grid ratio? - CORRECT ANSWER=> 12:1"
"What is the ratio of a grid whose lead strips are 0.25 mm thick, 1.6 mm high and are seperated
by a 0.10 mm alluminum spacer? - CORRECT ANSWER=> 16:1 grid"
"During latent image formation, the concentration of metallic silver in the exposed crystals
occurs in the region of the sensitivity specks. This explanation of the formation of the image is
reffered to as? - CORRECT ANSWER=> Gurney-Mott theory"
"What type of interactions cause ionization of irradiated material? - CORRECT ANSWER=>
Photoelectric - Changes inner shell electrons
Compton - Affects outer shell electrons"
"Which of the following xray interactions with matter is primarily responsible for contrast? -
CORRECT ANSWER=> Photoelectric effect"
Page | 2
,"Radiation produces at very discrete energies of approx 69 kiloelectron colts (kev) when
electrons interact with the K shell of the tungsten target atom is called? - CORRECT ANSWER=>
Characteristic Radiation"
"Pair-Production affects what portion of the cell? - CORRECT ANSWER=> Nucleus. It does NOT
cause ionization."
"What type of radiation would produce the greatest amount of biological damage in human
tissue? - CORRECT ANSWER=> High LET's"
"What is the active component of the TLD? - CORRECT ANSWER=> Lithium Fluoride"
"What is used in input phosphors? - CORRECT ANSWER=> Cesium Iodide"
"What is used in output phosphors? - CORRECT ANSWER=> Zinc Cadmium Sulfide"
"What must be done to Xray film to make it compatible to rare earth phosphors? - CORRECT
ANSWER=> Add light absorbing dye in the x-ray film emulsion"
"About what percentage of radiographic density is due to light emitted by an intensifying screen
phosphor? - CORRECT ANSWER=> 95-98%"
"What occurs when exit radiation interacts with a Photo-Stimulable imaging plate? - CORRECT
ANSWER=> Energy Absorption"
"What is used in scintillation gamma cameras in nuclear medicine/CT? - CORRECT ANSWER=>
Sodium Iodide"
"What color of light emitted by lanthanum oxy-bromide rare earth crystals in the intensifying
screen? - CORRECT ANSWER=> Blue"
"Maximum # of electron that may be found in the L-Shell of an atom? - CORRECT ANSWER=> 8"
"What is the most radiosensitive part of any human cell? - CORRECT ANSWER=> Chromosome
DNA
Nucleus"
Page | 3
, "What is arguably the MOST radiosensitive cell in the human body? - CORRECT ANSWER=>
Mature Lymphocyte"
"Example of Radiosensitive stem cells? - CORRECT ANSWER=> Neuroblasts
Spermatogonia"
"Human tissue considered to be the most radio-resistant? - CORRECT ANSWER=> Erythrocyte"
"What is a Erythrocyte? - CORRECT ANSWER=> End cells w/ no nucleus
Like mature nerve cells, are practically immune from radiation and have about a 4 month life
span"
"Example of Deterministic Effect? - CORRECT ANSWER=> Cataracto-genesis"
"Examples of Deterministic or Non-Stochastic associated with a threshold dose? - CORRECT
ANSWER=> Cataracts (2 grey - 200 Rad)"
"Examples of Stochastic, Non-Deterministic, Non threshold dose? - CORRECT ANSWER=>
Leukemia
Thyroid Cancer
Genetic Effects"
"Whole body doses only need...? - CORRECT ANSWER=> Very low doses for cancer & genetic
effects."
"What is a cutie pie? - CORRECT ANSWER=> Radiation survey monitor or it can be a hot
personnel monitoring device."
"Reduction in resolution often seen with the use of higher tube currents in a single focus tube is
a phenomenon called? - CORRECT ANSWER=> Blooming"
"What type of exposure factors provide the least patient exposure? - CORRECT ANSWER=>
Lowest kVp and lowest mAs would cause the lowest patient dose."
"What film change can be made to reduce the dose to the patient and surrounding
radiographer? - CORRECT ANSWER=> Use higher speed screen w/ a comparable change in mAs"
Page | 4
CORE REAL EXAM QUESTIONS
WITH DETAILED VERIFIED
ANSWERS ALREADY GRADED A+
LATEST VERSION 2026 BRAND
NEW!
"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."
"Beam limiting devices will? (3) - CORRECT ANSWER=> Improve image quality
Reduce patient dose
Reduce scatter radiation"
Page | 1
,"The purpose of reducing added filtration is to reduce radiation dose to? - CORRECT ANSWER=>
Patients skin"
"Recommended amount of filtration in Fluoro? - CORRECT ANSWER=> 3 mm Al Equivalent"
"Disadvantage to having 3 mm Al Equivalent? - CORRECT ANSWER=> Would require an increase
in technical factors defeating the purpose of filtration."
"What is the usual amount of filtration in Fluoro? - CORRECT ANSWER=> 2.5 mm Al Equivalent"
"What effect does excessive filtration have on xray image? - CORRECT ANSWER=> Reduced
contrast"
"# of grid lines per inch or centimeter defines? - CORRECT ANSWER=> Grid Frequency"
"For all dedicated chest units whose tube potential routinely exceeds 90 kVp, the minimum
recommended grid ratio is? - CORRECT ANSWER=> 8:1"
"Techniques below or at 90 kVp would utilize what grid ratio? - CORRECT ANSWER=> 8:1"
"Techniques above 90 kVp would utilize what grid ratio? - CORRECT ANSWER=> 12:1"
"What is the ratio of a grid whose lead strips are 0.25 mm thick, 1.6 mm high and are seperated
by a 0.10 mm alluminum spacer? - CORRECT ANSWER=> 16:1 grid"
"During latent image formation, the concentration of metallic silver in the exposed crystals
occurs in the region of the sensitivity specks. This explanation of the formation of the image is
reffered to as? - CORRECT ANSWER=> Gurney-Mott theory"
"What type of interactions cause ionization of irradiated material? - CORRECT ANSWER=>
Photoelectric - Changes inner shell electrons
Compton - Affects outer shell electrons"
"Which of the following xray interactions with matter is primarily responsible for contrast? -
CORRECT ANSWER=> Photoelectric effect"
Page | 2
,"Radiation produces at very discrete energies of approx 69 kiloelectron colts (kev) when
electrons interact with the K shell of the tungsten target atom is called? - CORRECT ANSWER=>
Characteristic Radiation"
"Pair-Production affects what portion of the cell? - CORRECT ANSWER=> Nucleus. It does NOT
cause ionization."
"What type of radiation would produce the greatest amount of biological damage in human
tissue? - CORRECT ANSWER=> High LET's"
"What is the active component of the TLD? - CORRECT ANSWER=> Lithium Fluoride"
"What is used in input phosphors? - CORRECT ANSWER=> Cesium Iodide"
"What is used in output phosphors? - CORRECT ANSWER=> Zinc Cadmium Sulfide"
"What must be done to Xray film to make it compatible to rare earth phosphors? - CORRECT
ANSWER=> Add light absorbing dye in the x-ray film emulsion"
"About what percentage of radiographic density is due to light emitted by an intensifying screen
phosphor? - CORRECT ANSWER=> 95-98%"
"What occurs when exit radiation interacts with a Photo-Stimulable imaging plate? - CORRECT
ANSWER=> Energy Absorption"
"What is used in scintillation gamma cameras in nuclear medicine/CT? - CORRECT ANSWER=>
Sodium Iodide"
"What color of light emitted by lanthanum oxy-bromide rare earth crystals in the intensifying
screen? - CORRECT ANSWER=> Blue"
"Maximum # of electron that may be found in the L-Shell of an atom? - CORRECT ANSWER=> 8"
"What is the most radiosensitive part of any human cell? - CORRECT ANSWER=> Chromosome
DNA
Nucleus"
Page | 3
, "What is arguably the MOST radiosensitive cell in the human body? - CORRECT ANSWER=>
Mature Lymphocyte"
"Example of Radiosensitive stem cells? - CORRECT ANSWER=> Neuroblasts
Spermatogonia"
"Human tissue considered to be the most radio-resistant? - CORRECT ANSWER=> Erythrocyte"
"What is a Erythrocyte? - CORRECT ANSWER=> End cells w/ no nucleus
Like mature nerve cells, are practically immune from radiation and have about a 4 month life
span"
"Example of Deterministic Effect? - CORRECT ANSWER=> Cataracto-genesis"
"Examples of Deterministic or Non-Stochastic associated with a threshold dose? - CORRECT
ANSWER=> Cataracts (2 grey - 200 Rad)"
"Examples of Stochastic, Non-Deterministic, Non threshold dose? - CORRECT ANSWER=>
Leukemia
Thyroid Cancer
Genetic Effects"
"Whole body doses only need...? - CORRECT ANSWER=> Very low doses for cancer & genetic
effects."
"What is a cutie pie? - CORRECT ANSWER=> Radiation survey monitor or it can be a hot
personnel monitoring device."
"Reduction in resolution often seen with the use of higher tube currents in a single focus tube is
a phenomenon called? - CORRECT ANSWER=> Blooming"
"What type of exposure factors provide the least patient exposure? - CORRECT ANSWER=>
Lowest kVp and lowest mAs would cause the lowest patient dose."
"What film change can be made to reduce the dose to the patient and surrounding
radiographer? - CORRECT ANSWER=> Use higher speed screen w/ a comparable change in mAs"
Page | 4
