History
Who designed the first devices used for filtration and collimation?
William Rollins
Filtration is used to reduce what type of energy?
Low energy
What are the two types of collimation?
Fixed and Adjustable
Collimation and filtration were first used in what application of health care?
Dentistry
What is the total amount of inherent filtration in an x-ray tube?
0.5 mm Al equivalent
Increasing collimation has what effect on patient dose?
Reduces patient dose
The first devices used in collimation and filtration were made up of what materials?
Lead, Leather, and Aluminum
Increasing the filtration has what effect on an x-ray beam?
Increases the average energy of the beam
A variable-aperture collimator contributes how much added filtration to an x-ray tube?
1 mm Al equivalent
What was the first device used in collimation and filtration to reduce patient dose?
Aperture Diaphragm
Increasing filtration has what effect on the continuous emission spectrum?
Decreases the amplitude
A lack of collimation leads to more scatter which has what effect on image contrast?
Decreased image contrast