title: [Experimental consideration about focused collimators of 3-in. and 5-in. in diameter (author's transl)].
mesh_terms: D006801:Humans; D008099:Liver / Q000000981:diagnostic imaging; D011874:Radiometry / Q000295:instrumentation / Q000592:standards*; D011877:Radionuclide Imaging; D013961:Thyroid Gland / Q000000981:diagnostic imaging