Pylinac, Catphan Uniformity index equation

Hi all

I want to know the information about the uniformity index.

plz notify the equation

when we analyze the catphan 604’s cacti image, the results showed Uniformity ROIs: Top: 33.5, Right: 31.0, Bottom: 34.0, Left: 33.0, Center: 40.0 Uniformity index: -0.865.

please have a look here at the documentation of the CTP486 class. There is a paper mentioned next to the uniformity index property which describes a formula for the uniformity index.

I hope that helps.