Dear all, I know it is a silly question, but I don't how to obtain mean imaging intensity using FSLview? FSLview can give me imaging histgram which display the distribution of imaging intensity, which is fantastic. But how can I obtain the mean value of all non-zero voxel? Many thanks. Regards Tingying -- Tingying Peng PhD student in Biomedical Engineering University of Oxford Old Road Campus Research Building (off Roosevelt Drive) Headington, Oxford OX3 7DQ, UK Tel: +44-(0)1865-617660 Email: [log in to unmask]