title: A comparison of 123I and 131I for thyroid imaging using various collimators.
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D007457:Iodine Radioisotopes; D011877:Radionuclide Imaging / Q000295:instrumentation; D013959:Thyroid Diseases / Q000175:diagnosis*
chemical_list: D007457:Iodine Radioisotopes