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Dear SPMers. Excuse me for a stupid question. I have a problem with preprocessing in "diffusion II" toolbox Could you tell me how exactly it is needed to enter b-values and gradients? I have 84 dicom files getting from scaner (Siemens Magnetom Symphony 1.5 T) in 13 directions (b0 + 12 dwi). After the convertation process they transform into 168(84 img + 84headers) files. What must I enter at the "B values" and "Gradient directions" lines? Is it ok: - B values: 0 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 - Gradient directions: 0.000, 0.000, 0.000 1.000, 0.000, 0.500 0.000, 0.500, 1.000 0.500, 1.000, 0.000 1.000, 0.500, 0.000 0.000, 1.000, 0.500 0.500, 0.000, 1.000 1.000, 0.000, -0.500 0.000, -0.500, 1.000 -0.500, 1.000, 0.000 1.000, -0.500, 0.000 0.000, 1.000, -0.500 -0.500, 0.000, 1.000 Thank you beforehand... -- Alexander Lebedev.