Results 211 to 220 of about 49,486 (246)
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Recommendations for fluorine-18 production
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1991Abstract 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 +5 more
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Metabolism of Fluorine 18 in Domestic Animals
American Journal of Physiology-Legacy Content, 1955Amounts 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 +4 more
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Synthesis of fluorine-18 labeled 21-fluoroprogesterone
Steroids, 197721-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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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 +10 more
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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 +10 more
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[Fluorine-18 in radiopharmacy].
Annales pharmaceutiques francaises, 2008Positron 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, 1998Whole-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 +4 more
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Production of carrier-free fluorine-18
The International Journal of Applied Radiation and Isotopes, 1965Abstract 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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Fluorine-18 Labeling of Peptides and Proteins
2006The pool of promising peptides worthy of investigation and evaluation for clinical use is continuously filled from different sources. Driven by the promising results obtained with peptides addressing somatostatin-2 receptor positive (sst2+) neuroendocrine tumours, other peptides targeting further receptor systems are being studied and evaluated ...
H J, Wester, M, Schottelius
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Fluorine-18 NaF PET imaging of child abuse
Pediatric Radiology, 2008We describe the use of 18F-NaF positron emission tomography (PET) whole-body imaging for the evaluation of skeletal trauma in a case of suspected child abuse. To our knowledge, 18F NaF PET has not been used in the past for the evaluation of child abuse.
Laura A, Drubach +3 more
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Journal of Inorganic and Nuclear Chemistry, 1964
Radiochemically pure 18F has been prepared by three different methods and its decay has been followed with β proportional counters and γ-ray counters in an effort to measure the half-life accurately. Analysis by a computer program that used the method of least squares gave a weighted mean half-life of 18F and a weighted standard deviation of the mean ...
J.D. Mahony, S.S. Markowitz
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Radiochemically pure 18F has been prepared by three different methods and its decay has been followed with β proportional counters and γ-ray counters in an effort to measure the half-life accurately. Analysis by a computer program that used the method of least squares gave a weighted mean half-life of 18F and a weighted standard deviation of the mean ...
J.D. Mahony, S.S. Markowitz
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