RAD Final Exam Questions and Answers
What interfaces with the RIS, HIS, and PACS? - Answer-Health Level 7
What is the best viewing conditions for a primary workstation? - Answer-Minimal levels of room light
What reduces the size of the image file and affects image quality? - Answer-Compression ratio
What occurs when there is lack of signal strength on a TV monitor? - Answer-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? - Answer-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? - Answer-Lossy compression
T/F
The display screen can affect the size distortion and magnification of an image. - Answer-True
What does PACS stand for? - Answer-Picture Archiving and Communication System
, T/F
With digital imaging, mAs only must be increased to prevent repeating exposures because of quantum
mottle. - Answer-False
What is the result if the anatomical region is not represented accurately? - Answer-Shape distortion
What system has the highest detective quantum efficiency (DQE)? - Answer-Direct radiography (DR)
systems
What does the capacitor do in the thin-film transistor (TFT) of an LCD monitor? - Answer-Maintains the
brightness and continuity of each pixel
T/F
The EI value is representative of the patient dose. - Answer-False
T/F
Reduction in patient dose has occurred with computerization of radiography. - Answer-True
What is the purpose of a grid in digital imaging? - Answer-To improve signal-to-noise ratio
What is the main reason for using high kVp and low mAs with digital imaging systems? - Answer-
Decrease patient exposure
What is the primary factor influencing contrast using digital radiography systems? - Answer-Look-up
table (LUT)
What is the primary cause of scatter radiation? - Answer-Patient size
What interfaces with the RIS, HIS, and PACS? - Answer-Health Level 7
What is the best viewing conditions for a primary workstation? - Answer-Minimal levels of room light
What reduces the size of the image file and affects image quality? - Answer-Compression ratio
What occurs when there is lack of signal strength on a TV monitor? - Answer-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? - Answer-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? - Answer-Lossy compression
T/F
The display screen can affect the size distortion and magnification of an image. - Answer-True
What does PACS stand for? - Answer-Picture Archiving and Communication System
, T/F
With digital imaging, mAs only must be increased to prevent repeating exposures because of quantum
mottle. - Answer-False
What is the result if the anatomical region is not represented accurately? - Answer-Shape distortion
What system has the highest detective quantum efficiency (DQE)? - Answer-Direct radiography (DR)
systems
What does the capacitor do in the thin-film transistor (TFT) of an LCD monitor? - Answer-Maintains the
brightness and continuity of each pixel
T/F
The EI value is representative of the patient dose. - Answer-False
T/F
Reduction in patient dose has occurred with computerization of radiography. - Answer-True
What is the purpose of a grid in digital imaging? - Answer-To improve signal-to-noise ratio
What is the main reason for using high kVp and low mAs with digital imaging systems? - Answer-
Decrease patient exposure
What is the primary factor influencing contrast using digital radiography systems? - Answer-Look-up
table (LUT)
What is the primary cause of scatter radiation? - Answer-Patient size
