Cerebrospinal fluid (CSF) plays an important role in clearance systems of the brain. There have been many studies on bulk flow of CSF; however, there have been few studies on complex flow like pseudo-random movement of CSF. In this paper, we investigate locally “stirred” CSF by using low b-value diffusion tensor imaging (DTI). Measured DTI shows inhomogeneous physiology of CSF, including extremely high and anisotropic diffusion tensors around the middle-cerebral artery. It demonstrates that the low b-value DTI will be useful in estimating local drainage of CSF.