Artifacts

Submitted by farras on Tue, 05/08/2012 - 17:24

Dear experts,
I ran the DPARSF preprocessing steps on a set of fMRI subjects, and I obtained images with parallel streaks which didn't look right. I am enclosing an example image. Has anyone encountered a similar issue?
Could one reason be that there was radio frequency leakage, as one book suggests? Or could it be the settings of DPARSF that I need to modify?

Thanks!

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YAN Chao-Gan

Wed, 05/09/2012 - 19:02

 I don't think this is the setting of DPARSF.

Could you have a check with your raw data? I guess there is some problems with your raw data.