Harmke A. Polinder-Bos, M.D., from the University of Groningen in the Netherlands, and colleagues examined the acute effect of conventional hemodialysis on CBF. Three [¹⁵O]H₂O positron emission tomography-computed tomography scans were performed before, early after the start of, and at the end of hemodialysis. Global and regional changes in CBF were measured in 12 patients aged ≥65 years with a median dialysis vintage of 46 months. {read more here}