true
t/f: Magnification always results in reduced spatial resolution.
false
t/f: When an image is distorted, spatial resolution is increased.
ionization
The photoelectric effect involves the removal (ejection) of an electron. This process of removing an electron from an atom is known as:
increased beam attenuation
A body tissue with an increased tissue density results in:
absorbed
When the x-ray photon strikes an atom within the tissue being imaged and loses all of its energy to an inner shell electron of that atom, the photon is said to have been _____.
SID and OID
Size distortion is affected by:
spatial resolution
The smallest object that can be detected in an image is the:
photoelectric interaction
The interaction between x-ray photons and tissue that results in production of a secondary x-ray photon is the:
unacceptable
An image that has excessive brightness is considered:
image contrast
Difference in the brightness levels (varying shades of gray including black and white) is called what?
spatial resolution
The accuracy of the anatomic structural lines in the radiographic image displayed is determined by the:
higher tissue density
Muscle tissue absorbs more radiation than fat tissue because muscle tissue has a:
lighter
With radiographic imaging, anatomic tissues, such as bone, that absorb most of the radiation result in that area of the image being:
false
X-ray absorption is more likely in tissues with a lower atomic number.
fog
Unwanted exposure to the IR due to scatter radiation is called:
true
The abdomen has low subject contrast.
brightness
The amount of luminance of a display monitor is:
differential absorption
_____ results in the process of image formation, whereby the x-ray beam interacts with the anatomic tissue, and a portion of the beam passes through the part and strikes the image receptor.
coherent scattering
Interactions of low-energy x-rays (energies below the diagnostic range) with tissue include:
true
t/f: Dynamic imaging provides imaging of the movement of internal structures.
all options are correct
The amount of x-ray beam attenuation is affected by the:
strike the image receptor and provide useful anatomic info
The x-ray photon that is scattered as a result of the Compton effect cannot:
secondary electron or compton electron
The outer shell electron that is ejected during the Compton interaction is also known as a:
pair production and photodisintegration
Interactions of high-energy x-rays (energies beyond the diagnostic range) with tissue include:
false
t/f: Approximately 20% of the primary x-ray beam reaches the image receptor.
lighter
Increased brightness means:
All of the options are correct.
Which of the following are common artifacts?
All of the options are correct.
Radiographic misrepresentation of the size or shape of the anatomic structure being imaged is:
Compton interaction
When the entering x-ray photon loses energy and changes its path of travel as a result of interacting with an atom, the interaction is known as the:
attenuation
_____ is the loss of some of the energy from the x-ray beam as it passes through the tissue being imaged.
grayscale
The number of shades of gray that can be displayed by a computer system is:
true
t/f: The process of differential absorption for image formation remains the same for digital, film, and fluoroscopy.
true
t/f: During attenuation of the x-ray beam, the photoelectric effect is responsible for the total absorption of the incoming x-ray photon.
true
t/f: Shape distortion can be useful in radiographic imaging.
increased beam attenuation
An increased part thickness results in:
true
t/f: The photoelectric effect is dependent on both the energy of the x-ray photon and the composition of the anatomic tissue.
contrast resolution
The ability of an image receptor to distinguish between objects with similar subject contrast is:
false
t/f: Compton interactions are more likely to occur in soft tissue as compared to bone.
energy of the incoming xray photon and atomi number of the anatomic tissue
The probability of total photon absorption by the photoelectric effect depends on the:
fewer photon interactions and more photons transmitted
What occurs at higher kilovoltage?
true
t/f: Radiographic images of structures are always magnified when compared to the actual structure.
latent
Following exposure, the _____ image occurs first on the image receptor.
remnant radiation
The x-ray beam that leaves the patient in the direction of the image receptor is often referred to as:
false
t/f: The highest quality radiographic image has no unsharpness.
brightness and contrast
Image qualities for the visibility of anatomic structures include.
decreases the visibility of anatomic structures
As seen on the radiographic image, scatter radiation:
image receptor
The device that receives the radiation leaving the patient is the:
All of the options are correct.
What occurs when too few photons reach the IR?
true
t/f: The Compton interaction can occur within all diagnostic x-ray energies.
spatial resolution and distortion
Image qualities for the accuracy of structures lines include.
decreases
Beam attenuation __________ with a higher-energy x-ray beam.
true
t/f: An area of increased brightness on a display monitor indicates more tissue absorption.
artifact
An unwanted brightness level in area interest on a radiographic image is:
false
t/f: Beam attenuation is increased with a higher-energy x-ray beam.
transmission
When the x-ray photon travels completely through the part without any interaction, it is called:
low contrast
A radiographic image with a greater number of similar brightness levels with small differences between them is said to have:
subject contrast
________________ refers to the absorption characteristics of the anatomic tissue imaged and the quality of the x-ray beam.
contribute to the radiation exposure of the patient and do not contribute any useful information about the anatomic part of interest
If scattered photons are absorbed within the anatomic tissue, they:
scattered
When the x-ray photon strikes an atom within the tissue being imaged and loses only part of its energy to an outer shell electron of that atom, the photon is said to have been _____.