title: Krypton-77 positron emission tomography for measurement of regional cerebral blood flow in a cross section of the head.
mesh_terms: D002560:Cerebrovascular Circulation; D006801:Humans; D007726:Krypton; D011868:Radioisotopes; D014057:Tomography, X-Ray Computed
chemical_list: D011868:Radioisotopes; D007726:Krypton