Correcting focus drift using ImageJ

Hi everyone,

I am working with 3D images of fluorescently labeled cells acquired by Laser-scanning confocal microscopy. Due to focus drift during acquisiton, cells look like they are elongated in z direction. I want to correct this elongation and thought about deconvoluting the image with a Point spread function.

Do you have any suggestions how to do that? Or ohter ideas how I can solve the problem?

Thanks a lot!