title: [Computation of the maximum volumes of 11-C, 13-N, 15-O, and 18-F used daily applying the average figures of usage].
mesh_terms: D002250:Carbon Radioisotopes; D005461:Fluorine; D006207:Half-Life; D006801:Humans; D008452:Maximum Allowable Concentration; D009590:Nitrogen Radioisotopes; D010104:Oxygen Radioisotopes; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011851:Radioactivity; D011868:Radioisotopes
chemical_list: D002250:Carbon Radioisotopes; D009590:Nitrogen Radioisotopes; D010104:Oxygen Radioisotopes; D011868:Radioisotopes; D005461:Fluorine