img crit density Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Film density | the degree of overall blackening from the black metallic silver deposited in the emulsion |
Window level | digital processing that produces changes in density/brightness |
In CR and DR “density” refers to: | image density or brightness |
What is the controlling factor of density for screen film? | mAs |
What is the controlling factor of density in digital? | window level |
What does mAs control in digital? | it assures proper exposure of the IR |
What change in mAs is necessary to produce a visible change in density on screen film? | 30% |
How should changes in mAs be determined? | mAs should always be doubled of halved |
FSS can affect density how on an improperly calibrated machine? | 30% increase |
Anode heel effect is what? | 45% greater density on the cathode side of the tube |
How are filtration and density related? | inversely |
Increased tissue thickness affects density how? | increased scatter increases overall density |
Increase in atomic number (Z | ) affects density how? |
Distance and intensity are related how? | ½ distance = ¼ intensity |
“density maintenance formula”? | direct square law |
Beam restriction and density are related how? | inversely |
How are scatter and density related? | increased scatter increases overall film density, any factor increasing scatter increases density. |
Additive pathology and density | additive pathologies are radiopaque, decreasing overall film density. |
Destructive pathology and density | destructive pathologies are radiolucent , increasing overall film density |
Created by:
annaluz87
Popular Radiology sets