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Testing...1, 2....
Tools, Tests, and Patterns
Artifacts
What Does It All Mean?
Other Stuff
100
The TG!*-LPV/LPH test is used to evaluate ___________.
What is geometric distortion
100
A standard pattern made to measure the resolution of digital display systems is called the __________.
What is SMPTE pattern
100
Radiation fatigue occurs in (3 answers)
What is Film-screen radiography, CR digital image plates, and DR digital image plates
100
Lossless compression reduces data files_______.
What is 10:1
100
A graph of the frequency of occurrence versus digital value intervals is called a(n)_______.
What is histogram
200
The qualitative evaluation of luminescence response is measured with the ________ test tool.
What is TG18-CT
200
There are ____ types of photometers commonly used.
What is 2
200
Cassettes used in CR are more highly sensitive to background and ________ radiation than film/screen cassettes are.
What is scatter
200
Lossy compression reduces data files _________.
What is 100:1
200
Computer aided diagnoses (CAD) requires the use of
What is uncompressed images
300
Spatial resolution of the digital display monitor is done with the _______ test pattern
What is TG18-CX
300
A photometer is a
What is luminescence meter
300
Object artifacts in digital imaging can occur from errors in x-ray beam collimation, patient positioning and ________.
What is histogram selection
300
A standard pattern made to measure the resolution of digital display systems is called the ___________.
What is SMPTE pattern
300
During postprocessing the digital output of the image receptor may need to be manipulated to correct for __________.
What is dead pixels
400
Display noise is measured using the ______ test pattern.
What is TG18-AFC
400
A telescope photometer is used at _______.
What is 1 meter
400
Backscatter radiation artifacts can occur more readily in digital imaging because of the __________.
What is highly sensitive receptors
400
The Task Group Report 18 is a procedure manual for ________.
What is testing digital display devices
400
________ is done during preprocessing to correct for an irregular pattern over the image.
What is flatfielding
500
Daily evaluation of monitors should be done with the _______ test tool.
What is TG18-QC
500
When evaluating the test pattern for geometric distortion, all lines should appear ________.
What is straight
500
The three classifications of digital imaging artifacts are image receptor, object and __________.
what is software
500
The consistent appearance of DICOM images on any compatible digital display device is achieved through __________.
What is perceptual linearization
500
Which modality produces the largest image files?
What is digital mammography