How to match histogram of set of medical images?

问题

I have medical images of 100 patients (100 stacks of MRIs) and I want to do histogram matching on them using this Matlab function

B = imhistmatch(A,ref)

How can I choose ref patient MRI (as reference volume)? since the number of slices between patients varies, how can I perform histogram matching?

I am hoping someone here can recommend a solution that explains the process in a way that I can use or share any code. Thanks

来源：https://stackoverflow.com/questions/43741287/how-to-match-histogram-of-set-of-medical-images