RAD Final Exam with correct answers
100%
What interfaces with the RIS, HIS, and PACS? - Correct Answers Health Level 7
What is the best viewing conditions for a primary workstation? - Correct Answers Minimal levels of
room light
What reduces the size of the image file and affects image quality? - Correct Answers Compression ratio
What occurs when there is lack of signal strength on a TV monitor? - Correct Answers Snow
What is the term used to describe the steady increase of exposure to patients because of the increased
latitude for overexposure errors in digital imaging? - Correct Answers Dose creep
What is a compression type that is used when images are to be sent outside of the network where the
images were originally acquired? - Correct Answers Lossy compression
T/F
The display screen can affect the size distortion and magnification of an image. - Correct Answers True
What does PACS stand for? - Correct Answers Picture Archiving and Communication System
T/F
With digital imaging, mAs only must be increased to prevent repeating exposures because of quantum
mottle. - Correct Answers False
What is the result if the anatomical region is not represented accurately? - Correct Answers Shape
distortion
, What system has the highest detective quantum efficiency (DQE)? - Correct Answers Direct radiography
(DR) systems
What does the capacitor do in the thin-film transistor (TFT) of an LCD monitor? - Correct Answers
Maintains the brightness and continuity of each pixel
T/F
The EI value is representative of the patient dose. - Correct Answers False
T/F
Reduction in patient dose has occurred with computerization of radiography. - Correct Answers True
What is the purpose of a grid in digital imaging? - Correct Answers To improve signal-to-noise ratio
What is the main reason for using high kVp and low mAs with digital imaging systems? - Correct
Answers Decrease patient exposure
What is the primary factor influencing contrast using digital radiography systems? - Correct Answers
Look-up table (LUT)
What is the primary cause of scatter radiation? - Correct Answers Patient size
What is the result if the detective quantum efficiency (DQE) is too high? - Correct Answers Mottled
appearance
What is graphed on a histogram? - Correct Answers Number of pixels of an image at a given density
A wide window width: - Correct Answers Produces a lower-contrast image
What is the dose-area product a measurement of? - Correct Answers Patient dose of the volume of
tissue irradiated
100%
What interfaces with the RIS, HIS, and PACS? - Correct Answers Health Level 7
What is the best viewing conditions for a primary workstation? - Correct Answers Minimal levels of
room light
What reduces the size of the image file and affects image quality? - Correct Answers Compression ratio
What occurs when there is lack of signal strength on a TV monitor? - Correct Answers Snow
What is the term used to describe the steady increase of exposure to patients because of the increased
latitude for overexposure errors in digital imaging? - Correct Answers Dose creep
What is a compression type that is used when images are to be sent outside of the network where the
images were originally acquired? - Correct Answers Lossy compression
T/F
The display screen can affect the size distortion and magnification of an image. - Correct Answers True
What does PACS stand for? - Correct Answers Picture Archiving and Communication System
T/F
With digital imaging, mAs only must be increased to prevent repeating exposures because of quantum
mottle. - Correct Answers False
What is the result if the anatomical region is not represented accurately? - Correct Answers Shape
distortion
, What system has the highest detective quantum efficiency (DQE)? - Correct Answers Direct radiography
(DR) systems
What does the capacitor do in the thin-film transistor (TFT) of an LCD monitor? - Correct Answers
Maintains the brightness and continuity of each pixel
T/F
The EI value is representative of the patient dose. - Correct Answers False
T/F
Reduction in patient dose has occurred with computerization of radiography. - Correct Answers True
What is the purpose of a grid in digital imaging? - Correct Answers To improve signal-to-noise ratio
What is the main reason for using high kVp and low mAs with digital imaging systems? - Correct
Answers Decrease patient exposure
What is the primary factor influencing contrast using digital radiography systems? - Correct Answers
Look-up table (LUT)
What is the primary cause of scatter radiation? - Correct Answers Patient size
What is the result if the detective quantum efficiency (DQE) is too high? - Correct Answers Mottled
appearance
What is graphed on a histogram? - Correct Answers Number of pixels of an image at a given density
A wide window width: - Correct Answers Produces a lower-contrast image
What is the dose-area product a measurement of? - Correct Answers Patient dose of the volume of
tissue irradiated
