Ohio GXMO Study Guide Review, Gxmo Ohio review info | Questions & Answers (100
%Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With
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When were x-rays discovered? - November 8, 1895 in Germany
What are the 3 Cardinal Principals of radiation protection? - Maximize distance,
maximize shielding, minimize time
What is Erythema? - Reddening of the skin
What is Anemia? - Decrease of oxygen in blood, low blood count
What is Leukopenia? - Low WBC count
What is epilation? - Loss of hair
What is collimation? - Limits the size/area of the x-ray beam
What is a proton? - Positively charged, in nucleus of atom
What is a neutron? - No electrical charge, in nucleus of atom
What is a electron? - Negatively charged, in orbital shell around nucleus of an atom
What is an ion? - A charged particle
What is ionization? - Process of an electron leaving its orbit around a neutral atom
What does isotropic mean? - Equal in all directions
What happens when x-rays are absorbed by body tissue? - Causes ionization of atoms
and molecules
What is radioplaque? - DOES NOT go through
What is radiolucent? - Sees through
A special mechanism that stops tube movement at a specific location is? - Detent
What device receives the energy of the x-ray beam and forms the image of the body
part? - Image Receptor
What type of cassette containing film receives x-ray beam? - Film based
, What is a latent image? - A hidden image
What type of cassette containing a phosphor plate receives the x-ray beam? -
Computed Radiography
In CR, the phosphor plate will be scanned by a? - Laser
What does the collimator do? - Limits the size of the radiation field
What does kVp control? - The penetrating ability of the x-rays
What does mAs control? - The quantity of x-rays produced
What is attenuation? - Absorption of the x-ray beam within the patients body
What material absorbs a high percentage of radiation? - Lead
What is the anode? - Positive charged, contains the target and is heated to produce
thermionic emission of electrons
What is the cathode? - Negative charged, contains the small/large filaments within a
focusing cup
99% of the energy of the electrons striking the target is converted into? - Heat
What rotates during exposure? - Anode
What does the small filament do? - Provides greater image detail
Higher kVp should be used for what type of body parts? - Larger or more dense body
parts
What does filtration do? - Removes low energy x-ray photons from the x-ray beam that
cause unnecessary patient expsoure
Radiation scatter production is increased when? - The collimator is wide open, the kVp
is too high, or the body part is to thick
Quality of the beam is? - kVp
The focal spot size may effect the? - Sharpness of the image
What would you increase by 15% to double image density? - kVp
What is the primary factor to control image contrast? - kVp
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