title: [Critical evaluation and rational use of nuclear medical techniques in the diagnosis of thyroid function (author's transl)].
abstract: The diagnosis of thyroid function has been decisively improved by the in-vitro tests and the radioimmunologic assays of total tri-iodothyronine- and TSH levels before and after stimulation with TRH. The high specificity and value of in-vitro tests lies in the quantitative measurement of peripheral hormoneconcentrations. The radio-iodine test, however, is only a qualitative technique giving information on movements of intrathyreoid radio iodine. The in-vitro tests are not falsified by iodine contamination. Extrathyreoidal protein-changes can be excluded with the ETR test. The radio-iodine test will now have to be done only in rare special cases. As a rule thyroid metabolism can be assessed safely by combining clinical examination with an in-vitro testblock adapted to the individual diagnostic problem with additional technetium scintigraphy.
mesh_terms: D006801:Humans; D007457:Iodine Radioisotopes; D011863:Radioimmunoassay; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012711:Serum Albumin, Radio-Iodinated; D013959:Thyroid Diseases / Q000175:diagnosis*; D013960:Thyroid Function Tests; D013974:Thyroxine / Q000097:blood; D014284:Triiodothyronine / Q000097:blood
chemical_list: D007457:Iodine Radioisotopes; D011868:Radioisotopes; D012711:Serum Albumin, Radio-Iodinated; D014284:Triiodothyronine; D013974:Thyroxine
vernacular_title: Kritische Wertung und rationeller Einsatz nuklearmedizinischer Methoden zur Schilddrüsenfunktionsdiagnostik