Hi everyone,

I am trying to make a lesion heat map from a group of patients. I have the individual lesion maps of the patients and I would like to create a heat map which will show which region on the brain has most overlap among the lesions, with the color bar indicating number of patient overlap according to the color. I tried using the MRIcroGL menu item Draw/Advanced/CreateOverlapImage. It created a single .nii file with lesions of all patients, however when I try visualizing it in MRIcroGL it appears as if it was one patient. Meaning the color bar goes from 0 to 1 only and all the lesions have a single color, although the sample is 24 patients.

How can I correct this? I appreciate your help with this!
Many thanks in advance!!