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Creado por Alex Ertmer
hace casi 7 años
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Difference between adjacent densities
Difference between adjacent densities that comprise the contrast are great.
Fewer shades of gray are present.
Three other terms for High Contrast:
Differences between adjacent densities are minimal.
Different names for Low Contrast
An abdomen x-ray is an example of ____ ____.
High contrast uses ____ kVp.
Low contrast uses ____ kVp.
The number of useful visible densities or shades of gray on a radiograph.
Total amount of contrast is determined by which two things?
The range of differences in the intensity of the x-ray beam after it's been attenuated by the patient.
The absorption characteristics of the anatomic tissue imaged & the quality of the x-ray beam.
Subject Contrast is determined by:
_____ is the primary controller in subject contrast.
Increasing kVp increases fog levels (_____).
_____ _____ is a simple tool to help focus on the contrast in a selected area.
This helps to eliminate adjacent information making evaluation easier.
Contrast mask should not replace _____.
_____ is a post exposure tool.
A visible change in contrast will not be visible until kVp is change by ____ - ____%, depending on range.