title: Geometrical efficiency distortions with the pin-hole gamma camera.
mesh_terms: D006801:Humans; D007457:Iodine Radioisotopes; D008433:Mathematics; D008722:Methods; D011877:Radionuclide Imaging / Q000295:instrumentation*; D013961:Thyroid Gland
chemical_list: D007457:Iodine Radioisotopes