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Exam 2 Review

Imaging Equipment

QuestionAnswer
Decreasing the kVp will increase? patient dose
Contrast resolution is improved by? tight collimation, lowering kVp and patient compression
Three primary factors influencing the intensity of scatter in the image-forming beam ? kVp, field size and patient thickness
Scatter radiation increases as ____ increases field size
What improves contrast and reduces patient dose? collimation
Which modality has the largest image files? digital mammography
graph of the frequency of occurrence versus digital value intervals is ______ histogram
What is done during preprocessing to correct for an irregular pattern over the image? Flatfielding
How long can CR cassettes sit for between exposures? a few days
Lossless compression reduces data files to as low as ___ 10:1
Object artifacts in digital imaging can occur from errors in ? x-ray beam collimation, histogram selection, and patient positioning
There is a direct relationship between the quantity of x-rays and what? milliamperage
Changes in kVp affect ____ image receptor exposure, beam penetrability, and x-ray beam energy
Sharpness of detail can be improved by increasing ____ SID
What are the prime exposure factors? kVp, mAs, SID
Created by: ashleymarshall
 



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