RTBC IMAGE PRODUCTION EXAM QUESTIONS AND ANSWERS 100% CORRECT
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RTBC
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RTBC
RTBC IMAGE PRODUCTION EXAM QUESTIONS AND ANSWERS 100% CORRECTRTBC IMAGE PRODUCTION EXAM QUESTIONS AND ANSWERS 100% CORRECTRTBC IMAGE PRODUCTION EXAM QUESTIONS AND ANSWERS 100% CORRECT
Scatter radiation does NOT affect: - ANSWER-Recorded spatial resolution
If the x-ray tube is moved rapidly duri...
RTBC IMAGE PRODUCTION EXAM
QUESTIONS AND ANSWERS 100%
CORRECT
Scatter radiation does NOT affect: - ANSWER-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? - ANSWER-Camera tube lag
Why must alternating current (AC) be used in the x-ray circuit? - ANSWER-
Transformers cannot work without AC
An off-focus error occurs when the gird: - ANSWER-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? - ANSWER-
Decreased spatial resolution
What compound is used in flat-panel image receptors to convert incoming x-ray photons
directly into an electrical signal? - ANSWER-amorphous selenium (a-Se)
In a direct capture digital radiography (DR) system, a decreased detector element (DEL)
size results in: - ANSWER-increased spatial resolution
How many shades of gray can be produced by an 8-bit digital radiography system? -
ANSWER-256 shades of gray
Which display monitors are particularly effective in brightly lit rooms? - ANSWER-Liquid
crystal display (LCD)
The distance form the center of one pixel to the center of the adjacent pixel is called: -
ANSWER-Pitch
The smallest exposure difference that can be detected and displayed by the imaging
system is called: - ANSWER-contrast resolution
Elimination of extraneous light from the edges of a digital radiographic image is a
achieved through: - ANSWER-the application of electronic masking
As the actual focal spot size increases, what happens to spatial resolution? - ANSWER-
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? - ANSWER-0.02 seconds
Spatial resolution is synonymous with what term? - ANSWER-Detail
The values below were recorded on 4 different x-ray imaging systems. Which value
represents the highest level of recorded spatial resolution? - ANSWER-20 line pairs per
millimeter (lp/mm)
The relationship between kVp and image receptor exposure is described according to
which of the following principles? - ANSWER-15% rule
As the object to image distance( OID) is increased, magnification will: - ANSWER-
Increase
The purpose of the rectifier in an x-ray circuit is to convert: - ANSWER-Alternating
Current (AC) and Direct Current (DC)
Which of the following is the outermost component of the computer radiography (CR)
cassette? - ANSWER-Carbon fibers
a technologist acquires a radiograph with an acceptable level of image receptor
exposure. If the kVp is decreased by 15% how should the mAs be changed to maintain
the same image receptor exposure - ANSWER-mAs should be increased by a factor of
2
The higher atomic number of the anode material allows for which 2 things? - ANSWER-
Increased melting point
Increased photon production
Patient records are shared between medical providers using: - ANSWER-Electronic
Health Record (EHR)
Which of these matrix sizes will have the smallest pixels? - ANSWER-2,048 x 2,048
Which changes will increase spatial resolution recorded in the radiographic image? -
ANSWER-Increase source-to-image distance (SID)
Which digital radiography systems is able to display the most diagnostic information? -
ANSWER-12-bit system
An increase in tube potential would increase receptor exposure by increasing the: -
ANSWER-Number of photons in the beam
Penetrating ability of the beam
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