Dear experts
I preprocessed dicom files from FunRaw to smoothed ReHo image by DPARSF. The whole process was error-free, but the bottom regions of the szReHo image including cerebellum and pons were shown as black. I think there was a problem with preprocessing, but I do not know exactly what the problem is. I attached files created during preprocessing. I would like to ask you for your expert advice. Thank you
Best, Dong Woo Kang
Forums
It would be better if you
It would be better if you could create your own group mask (via the QC module).
In your data, the bottom part was not covered during scanning, thus the ReHo values there might be 0.
After z-standardization (subtract mean and divide by STD), those 0 regions may become negative mean, thus appears black.