Rick,
Thanks, very much for looking into this. I am really grateful. Unfortunately, the dataset is made available here:
http://www.ccbi.cmu.edu/Suicidal-ideation-NATHUMBEH2017/Just-NatHumBeh2017-data-and-code.html
It just has the values stored as an array, and they say it is in NMI space so that is what we have proceeded with. I guess that the infomation is not enough for spatial display then. I think that the authors used SPM in their analysis/displays and I was using SUMA/AFNI.
Many thanks again, and best wishes,
Ranjan