More Grids

Question 1

When using a parallel grid, the beam diverges. The further you get from the center of the beam the image is less clear. What is this called

Answer 1

Grid Cut off

Question 2

What is the main purpose of a grid

Answer 2

Improve image clarity by absorbing scatter

Question 3

Which type of grid runs parallel to the table length which allows the x ray beam to be angled

Answer 3

Linear

Question 4

Which grid has angled strips that match the beam divergence which eliminates cut off

Answer 4

Focused

Question 5

When using a focused grid, the SID must be set to a particular grid focal length. An incorrect distance results in _____ ______ _____

Answer 5

Grid cut off

Question 6

Which grid is made up of dual grids perpendicular to each other, which removes a lot more scatter

Answer 6

Crossed

Question 7

Because crossed grids absorb more photons/ scatter, you have to turn up your ____ to get the absorption you need

Answer 7

mAs

Question 8

It is important to remember when using a dual grid, that you cAnNoT _______ _______ ________

Answer 8

Angle your beam/ x-ray tube

Question 9

Moves a grid during exposure to blur grid lines in the image. Scares animals with noise and vibrations

Answer 9

Potter- bucky

Question 10

Grid lines are lead strips over the film, eliminate them by (2)

Answer 10

Increasing lines per inch and thinner spacers