Results 281 to 290 of about 3,321,367 (333)

Preparation of carrier-free fluorine-18

The International Journal of Applied Radiation and Isotopes, 1977
Abstract A method for the preparation of carrier-free fluorine-18 using a column of hydrous stannic oxide is described. The adsorption and desorption characteristics of the fluoride ion on the column has been investigated using F-18 as a tracer. The present study has confirmed that the fluoride ion is practically completely adsorbed on the column in ...
T H, Hsieh, K W, Fan, J T, Chuang, M H, Yang   +3 more
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The Preparation of Fluorine-18 Labelled Radiopharmaceuticals

The International Journal of Applied Radiation and Isotopes, 1977
Abstract Progress in the preparation of fluorine-18 labelled radiopharmaceuticals is reviewed. The pharmacology and design of 18F-labelled organic compounds of biomedical interest, production of the radionuclide and methods of labelling which have been used to date are discussed. Emphasis has been placed on the practical chemical problems encountered,
A K, Horsch, K, Hudson, R W, Goulding, A J, Day   +3 more
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Preparation of Fluorine-18

Journal of Nuclear Science and Technology, 1964
Fluorine-18 was prepared by neutron irradiation of lithium carbonate in the reactor JRR-1. Five grams of lithium carbonate was irradiated for 2hr with a thermal neutron flux of 6×1011 n/cm2/sec. An alumina column was used to separate 18F from the irradiated material.
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Recommendations for fluorine-18 production

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1991
Abstract Data for the production of fluorine-18 (t 1/2 = 109.6 min; β + = 100%) are reviewed. 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.
Guillaume, Marcel, Luxen, André, Nebeling, Bruno, Argentini, Mario, Clark, John W., Pike, Victor William   +5 more
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Metabolism of Fluorine 18 in Domestic Animals

American Journal of Physiology-Legacy Content, 1955
Amounts of F/sup 18/ sufficient to permit studies up to 10 hours duration in domestic animals with non-toxic levels of total fluorine have become available from cyclotron production. The initial rate of disappearance of intravenously injected F/sup 18/ from the blood was found to be 41 and 32% of the dose/min.
J D, PERKINSON, I B, WHITNEY, R A, MONROE, W E, LOTZ, C L, COMAR   +4 more
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Synthesis of fluorine-18 labeled 21-fluoroprogesterone

Steroids, 1977
21-Fluoroprogesterone has been synthesized by the nucleophilic displacement of the mesyl group of the 21-hydroxypregn-4-ene-3,20-dione 21-methanesulfonate by fluoride ion, as formed from the solvolysis of potassium fluoride in acetonitrile, using 18-Crown-6 as the catalyst.
L A, Spitznagle, C A, Marino
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PET imaging of musculoskeletal tumours with fluorine-18 α-methyltyrosine: comparison with fluorine-18 fluorodeoxyglucose PET

European Journal of Nuclear Medicine, 2000
Fluorine-18 labelled alpha-methyltyrosine (FMT) was developed for positron emission tomography (PET) imaging, and its potential for clinical application in patients with brain tumours has been demonstrated. This is the first trial to compare FMT with 18F-fluoro-2-deoxy-D-glucose (FDG) for the evaluation of musculoskeletal tumours. Seventy-five patients
H, Watanabe, T, Inoue, T, Shinozaki, T, Yanagawa, A R, Ahmed, K, Tomiyoshi, N, Oriuchi, M, Tokunaga, J, Aoki, K, Endo, K, Takagishi   +10 more
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[Fluorine-18 in radiopharmacy].

Annales pharmaceutiques francaises, 2008
Positron emission tomography (PET) is a recent and expanding functional nuclear imaging technique. Its extensive development is related to the radiophysical properties fluorine 18 (18F) (weak energy of positron, sufficiently long physical half-life) and to the simple production and labeling procedures for 18F.
V, de Beco, D, Le Bars, J-M, Scherrmann
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Fluorine-18-fluorodeoxyglucose uptake in pneumonia.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 1998
Whole-body PET imaging with 18F-fluorodeoxyglucose (FDG) has been shown to be effective in distinguishing benign and malignant pulmonary disease. Mild elevations in FDG uptake with standardized uptake values (SUVs) less than 2.5 have been reported in benign lesions, including pneumonia.
Luketich, JD, Keenan, RJ, Townsend, DW, Meltzer, CC, Kapucu, LÜTFİYE ÖZLEM   +4 more
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Production of carrier-free fluorine-18

The International Journal of Applied Radiation and Isotopes, 1965
Abstract A rapid and effective procedure for the preparation of carrier-free fluorine-18 is described. The F 18 is produced by neutron irradiation of lithium carbonate and is separated by dissolving the material in acid and distilling off the hydrogen fluoride solution.
C.C. Thomas, J.A. Sondel, R.C. Kerns
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