RTBC A+IMAGE PRODUCTION EXAM: LATEST VERSION
ENGAGING QUESTIONS AND ANSWERS (100% ACCURATE)
Scatter radiation does NOT affect:
Recorded spatial resolution
If the x-ray tube is moved rapidly during a fluoroscopic exam, the image will
appear to be blurry. This is a result of what?
Camera tube lag
Why must alternating current (AC) be used in the x-ray circuit?
Transformers cannot work without AC
An off-focus error occurs when the gird:
Is used at the wrong source to image distance (SID)
While performing a cross table lateral c-spine, you decrease the SID from 72
inches to 60 inches. How will this modification affect the spatial resolution?
Decreased spatial resolution
What compound is used in flat-panel image receptors to convert incoming x-ray
photons directly into an electrical signal?
amorphous selenium (a-Se)
In a direct capture digital radiography (DR) system, a decreased detector element
(DEL) size results in:
increased spatial resolution
How many shades of gray can be produced by an 8-bit digital radiography
system?
256 shades of gray
Which display monitors are particularly effective in brightly lit rooms?
Liquid crystal display (LCD)
The distance form the center of one pixel to the center of the adjacent pixel is
called:
Pitch
The smallest exposure difference that can be detected and displayed by the
imaging system is called:
, contrast resolution
Elimination of extraneous light from the edges of a digital radiographic image is a
achieved through:
the application of electronic masking
As the actual focal spot size increases, what happens to spatial resolution?
decreases
If the generator you're using has 1000 mA capacity and your technique is 20 mAs
at 74 kVp, what is the shortest exposure time possible?
0.02 seconds
Spatial resolution is synonymous with what term?
Detail
The values below were recorded on 4 different x-ray imaging systems. Which
value represents the highest level of recorded spatial resolution?
20 line pairs per millimeter (lp/mm)
The higher atomic number of the anode material allows for which 2 things?
Increased melting point
Increased photon production
Patient records are shared between medical providers using:
Electronic Health Record (EHR)
Which of these matrix sizes will have the smallest pixels?
2,048 x 2,048
Which changes will increase spatial resolution recorded in the radiographic
image?
Increase source-to-image distance (SID)
Which digital radiography systems is able to display the most diagnostic
information?
12-bit system
An increase in tube potential would increase receptor exposure by increasing
the:
Number of photons in the beam
Penetrating ability of the beam
ENGAGING QUESTIONS AND ANSWERS (100% ACCURATE)
Scatter radiation does NOT affect:
Recorded spatial resolution
If the x-ray tube is moved rapidly during a fluoroscopic exam, the image will
appear to be blurry. This is a result of what?
Camera tube lag
Why must alternating current (AC) be used in the x-ray circuit?
Transformers cannot work without AC
An off-focus error occurs when the gird:
Is used at the wrong source to image distance (SID)
While performing a cross table lateral c-spine, you decrease the SID from 72
inches to 60 inches. How will this modification affect the spatial resolution?
Decreased spatial resolution
What compound is used in flat-panel image receptors to convert incoming x-ray
photons directly into an electrical signal?
amorphous selenium (a-Se)
In a direct capture digital radiography (DR) system, a decreased detector element
(DEL) size results in:
increased spatial resolution
How many shades of gray can be produced by an 8-bit digital radiography
system?
256 shades of gray
Which display monitors are particularly effective in brightly lit rooms?
Liquid crystal display (LCD)
The distance form the center of one pixel to the center of the adjacent pixel is
called:
Pitch
The smallest exposure difference that can be detected and displayed by the
imaging system is called:
, contrast resolution
Elimination of extraneous light from the edges of a digital radiographic image is a
achieved through:
the application of electronic masking
As the actual focal spot size increases, what happens to spatial resolution?
decreases
If the generator you're using has 1000 mA capacity and your technique is 20 mAs
at 74 kVp, what is the shortest exposure time possible?
0.02 seconds
Spatial resolution is synonymous with what term?
Detail
The values below were recorded on 4 different x-ray imaging systems. Which
value represents the highest level of recorded spatial resolution?
20 line pairs per millimeter (lp/mm)
The higher atomic number of the anode material allows for which 2 things?
Increased melting point
Increased photon production
Patient records are shared between medical providers using:
Electronic Health Record (EHR)
Which of these matrix sizes will have the smallest pixels?
2,048 x 2,048
Which changes will increase spatial resolution recorded in the radiographic
image?
Increase source-to-image distance (SID)
Which digital radiography systems is able to display the most diagnostic
information?
12-bit system
An increase in tube potential would increase receptor exposure by increasing
the:
Number of photons in the beam
Penetrating ability of the beam
