Exposure Factors Flashcards
All motion eliminates ______
resolution
The limb being radiographed should be placed ____
down (closest to the image receptor)
Formula for MF
MF=SID/SOD (Source image distance/Source Object distance)
Material used to filter the very soft alpha and beta radiation emitted from the xray tube during exposure (noted on the back of the collimator)
Inherent filtration
What does the graph indicate?
receptor size both horizontally and vertically
Horizontal is ____ the table, vertical is ____ the table
across, length
What does the collimator do?
Focuses the xray beam and absorbs scatter, and extra focal radiation
What three factors are grids sold with?
The ratio, the line pairs, and the size of the grid
A ___ is used to keep unwanted scattered radiation from affecting the image
Grid
General radiography grids are usually what ratios?
10:1, 8:1, with 103 lines
Digital imaging grids may be the same ratio 8:1 but with ___ -___ lines
173-215
