some questions about the output *_noise.nii after DIFFPREP

Submitted by lizhaoqing on

Dear all experts,

I used the DIFFPREP to preprocess my data, and there is a output *_DMC_noise.nii file. But I have no idea what it means. Is it the standard deviation of rician noise? If not, could the standard deviation of rician noise be gotten in TORTOISE?

Looking forward your reply. Thanks very much.