The Auger-electron emitter 165Er: excitation function of the 165Ho(p,n)165Er process
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Abstract
The lanthanide isotope 165Er decays by electron capture without any accompanying gamma radiation, which makes it an ideal radionuclide for Auger electron therapy. The chemical properties of erbium with regard to labelling of bio-conjugates are virtually identical to those of radio-yttrium. We measured the excitation function of the 165Ho(p,n) 165Er reaction and obtained a maximum cross section of 166±20 mb at 11.1±0.5 MeV proton energy. Our findings indicate that 165Er can be produced at any small-sized cyclotron in quantities suitable for biomedical applications. The thick target yield at Ep=15 MeV is 55 MBq/μA h. A mass separated sample of the nuclide pair 160Er/160Ho was used as model to demonstrate that the separation of the 165Er from the target matrix material Ho can be achieved by cation-exchange chromatography using Aminex A5 resin and α-HIBA as eluent in about 1 hour.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- Gerhard L. Stöcklin Memorial Issue. Dedication and Appreciation
- In Memoriam Gerhard L. Stöcklin
- From hot atom chemistry to epithermal chemistry
- Excitation functions of deuteron induced nuclear reactions on enriched 78Kr with particular relevance to the production of 76Br
- Practical production of 61Cu using natural Co target and its simple purification with a chelating resin for 61Cu-ATSM
- Cross section measurements of proton and deuteron induced formation of 103Ag in natural palladium
- The Auger-electron emitter 165Er: excitation function of the 165Ho(p,n)165Er process
- Cross sections for production of the therapeutic radioisotopes 198Au and 199Au in proton and deuteron induced reactions on 198Pt
- Production of 16N for instrument calibration
- New determination of the half-life of 205Bi
- Some nuclear chemical aspects of medical generator nuclide production at the Los Alamos hot cell facility
- A no-carrier-added 72Se/72As radionuclide generator based on distillation
- The isolation of 99Mo from fission material for use in the 99Mo/99mTc generator for medical use
- 99mTc gel generators based on zirconium molybdate-99Mo: III: Influence of preparatory conditions of zirconium molybdate-99Mo gel on generator performance
- Structure of [N,N´-bis(3,5-di-t-butyl-salicylidene)-2-benzyl-1,3-propanediaminato]nitridotechnetium(V) complex, TcN(bzdbsalpn), and nitrido-bridged linear polymeric chains in crystalline syn-isomer
- Neutral oxorhenium(V) and oxotechnetium(V) complexes with novel amide thioether dithiolate ligands derived from cysteine
- 188Re(V)-DMSA: in-vitro and in-vivo studies on the individual stereo isomers
- Analysis of 188Re-EDTMP complexes by HPLC and ultrafiltration
- Semi-remote production of Br-76 and preparation of high specific activity radiobrominated pharmaceuticals for PET studies
- [123/131I]Iodometomidate as a radioligand for functional diagnosis of adrenal disease: synthesis, structural requirements and biodistribution
- Synthesis of [123I]iodine labelled imidazo[1,2-b] pyridazines as potential probes for the study of peripheral benzodiazepine receptors using SPECT
- Radioiodination of ammonio-closo-monocarborane, 1-H3N-1-CB11H11. Aspects of labelling chemistry in aqueous solution using Chloramine-T
- Chemoselective pre-conjugate radiohalogenation of unprotected mono- and multimeric peptides via oxime formation
- A rapid, almost quantitative conversion of [11C]carbon dioxide into [11C]carbon monoxide via [11C]formate and [11C]formyl chloride
- Radiosynthesis of (N-[11C]methyl)benperidol for PET investigation of D2 receptor binding
- Determination of reaction parameters for the synthesis of the serotonin transporter ligand [11C]DASB: Application to a remotely controlled high yield synthesis
- Radiosynthesis and in vitro evaluation of the 5HT2 receptor ligand [N-11C-methyl]-1-[2,5-dimethoxy-4-iodophenyl]-2-methylaminopropane for PET
- Synthesis of 4-([18F]fluoromethyl)-2-chlorophenylisothiocyanate: A novel bifunctional 18F-labelling agent
- Isotopic tracer studies of chemical behavior of rare earth elements in environmental and biological sciences
- A new technique for radiolabelling of humic substances
- Trace elements evaluation of some medicinal herbs by instrumental neutron activation analysis
- Ultratrace and isotope ratios analyses of some radionuclides by ICP-MS
- The study of natural radionuclides and radon exhalation rate in ceramic materials containing fly ash developed in Israel