Final Exam Lra 221 (Computer Graphics) (160 Questions) Well Answered!!

FINAL EXAM LRA 221 (COMPUTER GRAPHICS) (160
QUESTIONS) WELL ANSWERED!!
Film and intensifying screens are primarily used in
Answers :conventional radiography.
Intensifying screens


Answers :emit light.
CR acquires an image through


Answers :the use of a storage phosphor plate.
Storage phosphor plates are similar to


Answers :intensifying screens.
In a DR system, which of the following are needed to produce a radiographic
image?


Answers :X-ray absorber and a CCD
The two elements needed to convert light signals into an electrical signal while
using indirect capture DR are TFT and:


Answers :photodiodes
The x-ray absorber typically used in direct capture DR is a:


Answers :photoconductor
Technologist efficiency ratings are generally the same when comparing
conventional radiography with ______ radiography.

,Answers :computed
Compared with a 90-second processing time found in conventional radiography,
image acquisition with DR has now been reduced to:


Answers :3 to 5 seconds.
The active element in a storage phosphor is:


Answers :barium fluorohalide
In reference to PSP image capture, to release the latent image, which of the
following devices is scanned over the phosphor plate?


Answers :Focused laser light
Which of the following best describes the sequence for PSP image capture?


Answers :Phosphor plate,
focused laser light scanner,
photomultiplier,
analog-digital converter,
review station
(all the above)
X-ray energy related to direct capture DR will stimulate a ______, which
eventually is changed into an electrical signal.


Answers :scintillator
The ______ converts x-ray energy directly to a digital electrical signal.

, Answers :photoconductor
Exposure latitude is to conventional radiography as _______ is to DR.


Answers :dynamic range
A look-up table maps:


Answers :image gray scale values.
With conventional radiography, optical density is primarily controlled by:


Answers :milliampere-seconds.
Preset image annotation controls include all of the following except:


Answers :date and time stamps.
All of the following are components of a PACS except:


Answers :independent kilovoltage peak and milliampere-second stations.
Light exposing the film is in direct proportion to the amount and energy of the
incident photon upon the screen. T/F


Answers :True
When switching from a conventional diagnostic radiography room to one that
incorporates CR, major equipment changes are to be expected. T/F


Answers :False