Enter the contrast in the image and the contrast in the target into the Calculator. The calculator will evaluate the Modulation Transfer Function.

## Modulation Transfer Function Formula

MTF = CI / CT

Variables:

• MTF is the Modulation Transfer Function ()
• CI is the contrast in the image
• CT is the contrast in the target

To calculate the Modulation Transfer Function, divide the contrast in the image by the contrast in the target.

## How to Calculate Modulation Transfer Function?

The following steps outline how to calculate the Modulation Transfer Function.

• First, determine the contrast in the image.
• Next, determine the contrast in the target.
• Next, gather the formula from above = MTF = CI / CT.
• Finally, calculate the Modulation Transfer Function.
• After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

contrast in the image = 1.78

contrast in the target = 2.94