title: Tissue perfusion measured using the ratio of 81Rb to 81mKr incorporated in the tissue.
mesh_terms: D001783:Blood Flow Velocity; D006207:Half-Life; D007726:Krypton; D008722:Methods; D008954:Models, Biological; D010477:Perfusion; D011868:Radioisotopes; D012413:Rubidium
chemical_list: D011868:Radioisotopes; D007726:Krypton; D012413:Rubidium