Ohio GXMO
Ohio GXMO Study Guide Review Test Questions
and Answers 2025
When were x-rays discovered? -Correct Answer ✔November 8, 1895 in Germany
What are the 3 Cardinal Principals of radiation protection? -Correct Answer ✔Maximize
distance, maximize shielding, minimize time
What is Erythema? -Correct Answer ✔Reddening of the skin
What is Anemia? -Correct Answer ✔Decrease of oxygen in blood, low blood count
What is Leukopenia? -Correct Answer ✔Low WBC count
What is epilation? -Correct Answer ✔Loss of hair
What is collimation? -Correct Answer ✔Limits the size/area of the x-ray beam
What is a proton? -Correct Answer ✔Positively charged, in nucleus of atom
What is a neutron? -Correct Answer ✔No electrical charge, in nucleus of atom
What is a electron? -Correct Answer ✔Negatively charged, in orbital shell around
nucleus of an atom
What is an ion? -Correct Answer ✔A charged particle
What is ionization? -Correct Answer ✔Process of an electron leaving its orbit around a
neutral atom
What does isotropic mean? -Correct Answer ✔Equal in all directions
What happens when x-rays are absorbed by body tissue? -Correct Answer ✔Causes
ionization of atoms and molecules
What is radioplaque? -Correct Answer ✔DOES NOT go through
What is radiolucent? -Correct Answer ✔Sees through
A special mechanism that stops tube movement at a specific location is? -Correct
Answer ✔Detent
Ohio GXMO
, Ohio GXMO
What device receives the energy of the x-ray beam and forms the image of the body
part? -Correct Answer ✔Image Receptor
What type of cassette containing film receives x-ray beam? -Correct Answer ✔Film
based
What is a latent image? -Correct Answer ✔A hidden image
What type of cassette containing a phosphor plate receives the x-ray beam? -Correct
Answer ✔Computed Radiography
In CR, the phosphor plate will be scanned by a? -Correct Answer ✔Laser
What does the collimator do? -Correct Answer ✔Limits the size of the radiation field
What does kVp control? -Correct Answer ✔The penetrating ability of the x-rays
What does mAs control? -Correct Answer ✔The quantity of x-rays produced
What is attenuation? -Correct Answer ✔Absorption of the x-ray beam within the patients
body
What material absorbs a high percentage of radiation? -Correct Answer ✔Lead
What is the anode? -Correct Answer ✔Positive charged, contains the target and is
heated to produce thermionic emission of electrons
What is the cathode? -Correct Answer ✔Negative charged, contains the small/large
filaments within a focusing cup
99% of the energy of the electrons striking the target is converted into? -Correct Answer
✔Heat
What rotates during exposure? -Correct Answer ✔Anode
What does the small filament do? -Correct Answer ✔Provides greater image detail
Higher kVp should be used for what type of body parts? -Correct Answer ✔Larger or
more dense body parts
What does filtration do? -Correct Answer ✔Removes low energy x-ray photons from the
x-ray beam that cause unnecessary patient expsoure
Ohio GXMO
Ohio GXMO Study Guide Review Test Questions
and Answers 2025
When were x-rays discovered? -Correct Answer ✔November 8, 1895 in Germany
What are the 3 Cardinal Principals of radiation protection? -Correct Answer ✔Maximize
distance, maximize shielding, minimize time
What is Erythema? -Correct Answer ✔Reddening of the skin
What is Anemia? -Correct Answer ✔Decrease of oxygen in blood, low blood count
What is Leukopenia? -Correct Answer ✔Low WBC count
What is epilation? -Correct Answer ✔Loss of hair
What is collimation? -Correct Answer ✔Limits the size/area of the x-ray beam
What is a proton? -Correct Answer ✔Positively charged, in nucleus of atom
What is a neutron? -Correct Answer ✔No electrical charge, in nucleus of atom
What is a electron? -Correct Answer ✔Negatively charged, in orbital shell around
nucleus of an atom
What is an ion? -Correct Answer ✔A charged particle
What is ionization? -Correct Answer ✔Process of an electron leaving its orbit around a
neutral atom
What does isotropic mean? -Correct Answer ✔Equal in all directions
What happens when x-rays are absorbed by body tissue? -Correct Answer ✔Causes
ionization of atoms and molecules
What is radioplaque? -Correct Answer ✔DOES NOT go through
What is radiolucent? -Correct Answer ✔Sees through
A special mechanism that stops tube movement at a specific location is? -Correct
Answer ✔Detent
Ohio GXMO
, Ohio GXMO
What device receives the energy of the x-ray beam and forms the image of the body
part? -Correct Answer ✔Image Receptor
What type of cassette containing film receives x-ray beam? -Correct Answer ✔Film
based
What is a latent image? -Correct Answer ✔A hidden image
What type of cassette containing a phosphor plate receives the x-ray beam? -Correct
Answer ✔Computed Radiography
In CR, the phosphor plate will be scanned by a? -Correct Answer ✔Laser
What does the collimator do? -Correct Answer ✔Limits the size of the radiation field
What does kVp control? -Correct Answer ✔The penetrating ability of the x-rays
What does mAs control? -Correct Answer ✔The quantity of x-rays produced
What is attenuation? -Correct Answer ✔Absorption of the x-ray beam within the patients
body
What material absorbs a high percentage of radiation? -Correct Answer ✔Lead
What is the anode? -Correct Answer ✔Positive charged, contains the target and is
heated to produce thermionic emission of electrons
What is the cathode? -Correct Answer ✔Negative charged, contains the small/large
filaments within a focusing cup
99% of the energy of the electrons striking the target is converted into? -Correct Answer
✔Heat
What rotates during exposure? -Correct Answer ✔Anode
What does the small filament do? -Correct Answer ✔Provides greater image detail
Higher kVp should be used for what type of body parts? -Correct Answer ✔Larger or
more dense body parts
What does filtration do? -Correct Answer ✔Removes low energy x-ray photons from the
x-ray beam that cause unnecessary patient expsoure
Ohio GXMO
