Card Set Information
Denstiy contrast grid
What is the controlling factor for density?
Which law states that density should remain the same with any combination of mA and time as long as your mAs is the same?
Law of reciprocity
What percentage of change in mA will be needed to have a visible difference in density
T or F A 5% increase in KvP will cause a visible difference in density
SID and beam intensity have a _________ relationship
Film density will ____________as filtration is increased
T or F Grids have no Effect on density
As tissue thickness and type increase density will
Will increasing collimation increase or decrease the total number of x-ray photons hitting the IR?
A grid is used to improve contrast by__________
Scatter increases and contrast is impaired as KvP
T or F Scatter decrease with increasing volume of tissue being radiated and decreases with increased atomic number of the tissue.
First part false it increases, second part true
T or F a 12:1 gird ratio will absorb more scatter than an 8:1
________ grids are commonly used because they allow tube angulations.
T or F A focused grid with lower grid ratios has a greater latitude than higher grid ratios