Ch.6 Grid Ratio

Question 1

When no grid is used, what is the grid conversion factor ?

Answer 1

1

Question 2

What is the grid conversion for a grid with a ratio of 5:1?

Answer 2

2

Question 3

What is the grid conversion for a grid with a ratio of 6:1?

Answer 3

3

Question 4

What is the grid conversion for a grid with a ratio of 8:1?

Answer 4

4

Question 5

What is the grid conversion for a grid with a ratio of 10:1?

Answer 5

5

Question 6

What is the grid conversion for a grid with a ratio of 12:1?

Answer 6

5

Question 7

What is the grid conversion for a grid with a ratio of 16:1?

Answer 7

6

Question 8

When going from no grid to a grid with a 5:1 ratio, what will need to happen to the MAs?

Answer 8

It will be doubled

Question 9

When going from no grid to a grid with a 6:1 ratio, what will need to happen to the MAs?

Answer 9

It will be tripled

Question 10

PRACTICE QUESTION: The radiographers new MAs of 40 was used with a 6:1 grid, what was the initial MAs used with a grid of 5:1?

Answer 10

MAs1=26.6

Question 11

If a grid is added, ______mAs by correct GCF to compensate for a ________ in IR exposure.

Answer 11

Multiply, decrease

Question 12

If a grid is removed, _______ MAs by correct GCF to compensate for an ________ in exposure.

Answer 12

Divide, increase