I am trying to parcellate my fMRI brain volume into 90 regions using AAL atlas. However, this atlas does not provide separate 90 regions. It is in the format of 3-D nifti file which does not specify any information about the location of these regions. 

My question is, how can i parcellate my brain data into 90 regions using this AAL atlas?

 I want to get mean voxel time series from each and every parcellated regions. 

Many thanks in advance,

with regards,