Showing papers in "International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes in 1991"

TL;DR: The Monte Carlo code ETRAN as mentioned in this paper was developed for the solution of coupled electron-photon transport problems, and it has been used extensively in the field of wireless sensor networks.

TL;DR: The experience of some well-established European centres for positron emission tomography (PET) in the routine production of fluorine-18 for the purpose of labelling radiopharmaceuticals is described to give practical and technical recommendations to new PET group entering this key area.

TL;DR: In this paper, a method of determining Ra isotopes by α-particle spectrometry using 225Ra as a yield tracer has been developed, which can be easily completed in 1 day.

TL;DR: The 18F-labeling of 4-borono-D-L-phenylalanine showed that the compound has potential as a tracer for pancreas imaging with positron emission tomography and radiation dosimetry.

TL;DR: In this paper, the deuteron irradiation of natural Ni targets has been measured up to 19 MeV incident energy for the production of 64Cu and other radionuclides.

TL;DR: The potential of utilizing high-intensity proton accelerators as a supply source of 99mTc and 99Mo for use in diagnostic nuclear medicine is evaluated and a brief analysis is made on the potential use of this combined technology to support the anticipated expansion of nuclear medicine in developing nations.

TL;DR: The whole synthesis procedure, including purification and pharmaceutical package, was achieved within 60 min with a decay corrected yield of 30-35%.

TL;DR: In this article, the production and radiochemical separation of 89 Zr from deuteron irradiation of natural yttrium targets is described, which is optimized in order to minimize the level of the long lived 88 Zr.

TL;DR: In this article, mass attenuation coefficients of γ rays in materials containing hydrogen, carbon, and oxygen in the energy range 0054 −1333 MeV are reported. And the experimental results are analyzed in terms of the total cross-sections, effective atomic numbers and electron densities.

TL;DR: In this article, a new, faster and more reliable method for isolation of Cu was devised, based on selective extraction of Cu dithizonate into organic solvent from a 0.5 M HCl solution of the bulk Zn target, back extraction of CU into aqueous phase, removal of Ga by isopropyl ether treatment, and final purification by anion exchange separation from other trace radiocontaminants.

TL;DR: A reliable, reproducible method has been developed for the in situ production of decicurie quantities of [13N]ammonia by proton irradiation of pressurized, dilute aqueous solutions of acetic acid and ethanol.

TL;DR: A new dosimeter made of ferrous sulphate solution and agarose gel has been developed that has a uniform sensitivity over large volumes and is dependent on the initial ferrous ion concentration.

TL;DR: S-[11C]CGP 12177 is preferred to the formerly described racemate as a radioligand for the study of beta-adrenergic receptors in vivo by positron emission tomography.

TL;DR: In this article, linear attenuation coefficients of a range of tropical hardwoods have been determined at a photon-energy of 59.54 keV, and good accord with mass-density linear dependence is demonstrated.

TL;DR: It was found that an exponential fit (vs linear or polynomial) to the data provides improved accuracy of the estimated dose, and the protocol for the additive dose method is presented.

TL;DR: In this paper, the effects of various parameters in the electrodeposition method of Hallstadius were investigated to arrive at a compromise between high percentage yield and good energy resolution in the source preparation for α spectrometry.

TL;DR: In this paper, a new analytical technique using inductively coupled plasma mass spectrometry (ICP-MS) was applied to the determination of 99Tc in some environmental samples.

TL;DR: In this article, cross sections have been measured up to 30 MeV for proton induced nuclear reactions on natural nickel targets leading to the production of 57Ni, 57Co, 56Co and 55Co.

TL;DR: Free radicals produced in chicken bone tissue by 137Cs gamma-rays were measured using electron paramagnetic resonance spectroscopy and the yield of radicals was found to be proportional to the absorbed dose.

TL;DR: The feasibility of using Monte Carlo techniques to calculate dose patterns in a patient undergoing electron beam radiotherapy, and the calculation of stopping-power ratios for use in ion chamber dosimetry are discussed.

TL;DR: The binding of the 45Ti with plasma transferrin in vitro and in vivo suggested that these compounds can be used for estimating the blood volume, and potential as an indicator representing the breakdown of the blood-brain barrier in the rat was demonstrated by autoradiography.

TL;DR: In this paper, the main radiogallium contaminants in the proton bombardment of natZn as well as natGe were measured from threshold up to 100 MeV for the production of 67Ga and its main radioglium contaminants.

TL;DR: In this article, the authors measured the (p, 2n) and ( p, pn) reactions on 99.9% enriched 124Xe from threshold up to 44 MeV.

TL;DR: A beta-emitting analogue of the tumour imaging radiopharmaceutical pentavalent [99mTc]Tc(V)DMSA of possible value in tumour therapy is readily prepared by stannous reduction of [186Re]ReO4 in the presence of dimercaptosuccinic acid at 100 degrees C using a commercial DMSA kit.

TL;DR: In this article, the authors used stacked gas cells for the formation of nuclear reactions on natural krypton and isotopically enriched 82 Kr and 83 Kr over the proton energy range of 5-30 MeV.

TL;DR: In a displacement experiment, radioactivity in the striatum was markedly reduced after injection of 6 mg unlabelled SCH 23390, thus demonstrating the specificity and reversibility of [11C]SCH 39166 binding to dopamine D-1 receptors.

TL;DR: The NCA asymmetric synthesis of l -6-[18F]fluorodopa starting from (1R,2R,5R)-[(+)-2-hydroxypinanyl-3-idene]glycine t-butyl ester as chiral agent has been developed as discussed by the authors.

TL;DR: In this paper, the CIEMAT/NIST method of 4πβ liquid-scintillation efficiency tracing with tritium was used for activity analysis of Rhenium-186, with an uncertainty of 1.61%.