Among the medical applications of indium-111 are specialized diagnostic uses:
- indium-111 labeled antibodies;
- indium-111 oxine is also useful for isotopic labeling of blood cell components, specifically the labeling of platelets for indium-111 for thrombus detection and indium-111 labelled leukocytes for localization of inflammation and abscesses, and determination of leukocyte kinetics;
- labeling of peptides and other proteins with indium-111 to determine their uptake by rare cancers (for example, the indium-111 octreotide scan is a highly specific and powerful tool for diagnosing carcinoid tumors, paragangliomas, some ectopic pheochromocytomas and other uncommon neuroendocrine tumors).
Indium-111 decays by electron capture to cadmium-111, emitting a 0.1713 and 0.2454 MeV gamma rays with a 2.8047 day radioactive half-life. The parent isotope of indium-111 is tin-111, with a decay mode of electron capture. Indium-111 also undergoes isomeric transition, emitting a 0.537 MeV gamma ray with a 7.7 minute half-life.
- Table of Radionuclides, Vol. 3 (PDF). Bureau international des poids et mesures. 2006. p. 75. ISBN 92-822-2218-7. Retrieved 26 June 2017.
- "IN-111 FACT SHEET" (PDF). Nordion(Canada), Inc. Retrieved 23 September 2012.
- "ENSDF Decay Data for 111-In". National Nuclear Data Center. Retrieved 17 October 2012.
- "Nuclide Table, Nuclide: In-111". Korea Atomic Energy Research Institute (KAERI). Retrieved 23 September 2012.
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