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rad107 e2

QuestionAnswer
At least a _____% change in mAs is necessary to produce a visible change in the image. 30
With automatic exposure techniques the exposure is terminated when the optimum _____ is reached. OD
There is a direct relationship between the quantity of x-rays and the __________. milliamperage
Patient thickness should be measured with the _______. caliper
If mAs is increased from 20 mAs to 40 mAs, the patient dose will _____________. be doubled
Foreshortening is caused by a(n)___________. angled body part when the beam is perpendicular to the image receptor
The ambient light at a digital image workstation should be ______________. near darkness
The science of ______________ is the study of the response of the human eye to light. photometry
Flatfielding is accomplished through automatic calibration images called _____________ and _______________. offset images; gain images
Pre-processing includes all of the following except ______________. annotation
What is the basic photometric unit? Lumen
The cosine law is used to describe ____________. luminous intensity of a digital display device
Image file size is determined by ________ size and grayscale bit depth. matrix
Within a PACS network the secretarial workstation and the viewing workstation would both be called ___________. clients
Which medical information organization is working to make patient radiation dose ALARA? ACR
The process of matching any worker to the work environment to maximize efficiency is ______. ergonomics
When the ROC analysis is completed, the data is evaluated using the metric, ___________________. area under the curve
A telescope photometer is used at __________. 1 meter
When evaluating the test pattern for geometric distortion, all lines should appear ______________. straight
Created by: McKenna0410
 

 



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