title: Studies of the circulation with radioactive microspheres.
mesh_terms: D001165:Arteriovenous Malformations / Q000175:diagnosis; D001775:Blood Circulation; D007201:Indicator Dilution Techniques; D007269:Injections, Intra-Arterial; D007275:Injections, Intravenous; D008846:Micromanipulation; D011655:Pulmonary Embolism / Q000175:diagnosis; D011868:Radioisotopes; D012039:Regional Blood Flow
chemical_list: D011868:Radioisotopes