indium-111
Sign in to saveAlso known as In-111, 111In, indium in-111, Indium (111 In), Indium In-111
Indium-111 (111In) is a radioactive isotope of indium (In). It decays by electron capture to stable cadmium-111 with a half-life of 2.8048 days. The isotope is produced by proton irradiation of a cadmium target (112Cd(p,2n) or 111Cd(p,n)) in a cyclotron, as recommended by International Atomic Energy Agency (IAEA). The former method is more commonly used as it results in a higher level of radionuclide purity.
Wikidata facts
- Instance of
- isotope of indium
- Subclass of
- indium
- Mass
- 110.905
Show 11 more facts
- atomic number
- 49
- neutron number
- 62
- half-life
- 2.8047
- spin quantum number
- 4.5
- parity quantum number
- 1
- mass excess
- -88392.043
- binding energy
- 945973.302
- canonical SMILES
- [In]
- chemical formula
- In
- isomeric SMILES
- [111In]
- subject has role
- radiopharmaceutical
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Encyclopedic overview
5 sectionsContents
- Uses in nuclear medicine
- <sup>111</sup>In labeled antibodies
- <sup>111</sup>In labeled peptides
- See also
- References
Indium-111 (111In) is a radioactive isotope of indium (In). It decays by electron capture to stable cadmium-111 with a half-life of 2.8048 days. The isotope is produced by proton irradiation of a cadmium target (112Cd(p,2n) or 111Cd(p,n)) in a cyclotron, as recommended by International Atomic Energy Agency (IAEA). The former method is more commonly used as it results in a higher level of radionuclide purity.
Indium-111 is commonly used in nuclear medicine diagnostic imaging by radiolabeling targeted molecules or cells. During its radioactive decay, it emits gamma (γ) photons which can be imaged using planar or single-photon emission computed tomography (SPECT) gamma cameras (primary energies: 171.3 keV (91%) and 245.4 keV (94%)).
Excerpted from Wikipedia’s “indium-111” article, available under the CC BY-SA 4.0 licence.