Feng Y, Phipps MD, Phelps TE, Okoye NC, Baumeister JE, Wycoff DE, Dorman EF, Wooten AL, Vlasenko V, Berendzen AF, Wilbur DS, Hoffman TJ, Cutler CS, Ketring AR, Jurisson SS. Evaluation of
72Se/
72As generator and production of
72Se for supplying
72As as a potential PET imaging radionuclide.
Appl Radiat Isot 2019;
143:113-122. [PMID:
30408634 DOI:
10.1016/j.apradiso.2018.10.026]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/22/2018] [Accepted: 10/29/2018] [Indexed: 11/23/2022]
Abstract
Positron-emitting 72As is the PET imaging counterpart for beta-emitting 77As. Its parent, no carrier added (n.c.a.) 72Se, was produced for a 72Se/72As generator by irradiating an enriched 7°Ge metal-graphite target via the 70Ge(α, 2 n)72Se reaction. Target dissolution used a fast, environmentally friendly method with 93% radioactivity recovery. Chromatographic parameters of the 72Se/72As generator were evaluated, the eluted n.c.a. 72As was characterized with a phantom imaging study, and the previously reported trithiol and aryl-dithiol ligand systems were radiolabeled with the separated n.c.a. 72As in high yield.
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