RTE 1401 EXAM 2 REVIEW Prep
Questions and Answers Latest
Version 2026
Attenuation
reduction in intensity as the beam passes through matter
Automatic Rescaling
process by which images are produced with uniform brightness and contrast regardless
of the amount of exposure
Brightness
function of a display monitor; changes image lightness/darkness (density)
Density
DARKNESS
Direct Detector technology
uses amorphous selenium as the active detector material
Distortion
misrepresentation of the true size or shape of an object
(magnification and true distortion are two types)
Exposure Index (EI)
Numeric representation of the total x-ray exposure to the receptor (S-value)
Exposure Latitude
Range of exposures that can be used and still result in the capture of a diagnostic
quality image
Grid
device consisting of thin lead strips cleans up scattor
Indirect Detector technology
2-step process that uses amorphous silicon to covert x-ray energy to light and then to
electrons
Latent Image
invisible image created after exposure but before processing
Penetrating Ability
ability of an x-ray beam to pass through an object; controlled by the kilovolt peak of the
beam
Primary Radiation
X-ray beam after it leaves the x-ray tube and before it reaches the object
Three major classifications of diagnostic radiographic imaging
film/screen radiography
fluoroscopic imaging
digital or computerize imaging
Four requirements to produce an x-ray
vacuum
source of electrons
, method to accelerate electrons
method to stop the electrons
Scatter radiation
non-diagnostic radiation photons that interact with the body's matter in such a way that
the resulting photon continues its travel in a different direction. (may or may not actually
reach image receptor)
photographic factor
density- kVp (color)
contrast- mAs
geometric factors
recorded detail (magnification)
- SID
-OID
distortion (depth perseption
-Size
-Shape
Source-to-image distance (SID)
standardized distance between the point of x-ray emission in the x-ray tube (Focal spot)
and the image receptor - affects the relative intensity of the radiation as it reaches the
image receptor
window level
controls image brightness
window width
controls contrast
Object-to-image distance (OID)
distance between patient and image receptor
Deviation Index (DI)
effective measure of actual radiation exposure to patient
barium fluorohalide crystals
exposure plate is stored in this medium -they create electron "traps"
contrast
visible differences between adjacent radiographic densities (shades of gray)
classes of radiation
Primary radiation
Scatter radiation
Absorbed radiation
Remnant radiation
requirements for the production of x-rays
(1) Vacuum (tube housing)
(2) Source of electrons (filament)
(3) Method to accelerate the electrons(voltage) rapidly
(4) Method to stop the electrons (target)
primary radiation
x-ray beam after it leaves the x-ray tube and before it reaches the patient's body
remnant radiation
radiation resulting after the beam exits the patient's body
Questions and Answers Latest
Version 2026
Attenuation
reduction in intensity as the beam passes through matter
Automatic Rescaling
process by which images are produced with uniform brightness and contrast regardless
of the amount of exposure
Brightness
function of a display monitor; changes image lightness/darkness (density)
Density
DARKNESS
Direct Detector technology
uses amorphous selenium as the active detector material
Distortion
misrepresentation of the true size or shape of an object
(magnification and true distortion are two types)
Exposure Index (EI)
Numeric representation of the total x-ray exposure to the receptor (S-value)
Exposure Latitude
Range of exposures that can be used and still result in the capture of a diagnostic
quality image
Grid
device consisting of thin lead strips cleans up scattor
Indirect Detector technology
2-step process that uses amorphous silicon to covert x-ray energy to light and then to
electrons
Latent Image
invisible image created after exposure but before processing
Penetrating Ability
ability of an x-ray beam to pass through an object; controlled by the kilovolt peak of the
beam
Primary Radiation
X-ray beam after it leaves the x-ray tube and before it reaches the object
Three major classifications of diagnostic radiographic imaging
film/screen radiography
fluoroscopic imaging
digital or computerize imaging
Four requirements to produce an x-ray
vacuum
source of electrons
, method to accelerate electrons
method to stop the electrons
Scatter radiation
non-diagnostic radiation photons that interact with the body's matter in such a way that
the resulting photon continues its travel in a different direction. (may or may not actually
reach image receptor)
photographic factor
density- kVp (color)
contrast- mAs
geometric factors
recorded detail (magnification)
- SID
-OID
distortion (depth perseption
-Size
-Shape
Source-to-image distance (SID)
standardized distance between the point of x-ray emission in the x-ray tube (Focal spot)
and the image receptor - affects the relative intensity of the radiation as it reaches the
image receptor
window level
controls image brightness
window width
controls contrast
Object-to-image distance (OID)
distance between patient and image receptor
Deviation Index (DI)
effective measure of actual radiation exposure to patient
barium fluorohalide crystals
exposure plate is stored in this medium -they create electron "traps"
contrast
visible differences between adjacent radiographic densities (shades of gray)
classes of radiation
Primary radiation
Scatter radiation
Absorbed radiation
Remnant radiation
requirements for the production of x-rays
(1) Vacuum (tube housing)
(2) Source of electrons (filament)
(3) Method to accelerate the electrons(voltage) rapidly
(4) Method to stop the electrons (target)
primary radiation
x-ray beam after it leaves the x-ray tube and before it reaches the patient's body
remnant radiation
radiation resulting after the beam exits the patient's body
