نتایج جستجو برای: radionuclides imaging
تعداد نتایج: 460857 فیلتر نتایج به سال:
Background: A study on the migration characteristics of 238U, 210Po, 232Th and 40K within the soil to the wild plants in the Western Ghats were carried out. Materials and Methods: Concentrations of these radionuclides were measured in different depths of soil and from different species by employing gamma ray spectrometer and alpha counter. Results: The activity concentration of these r...
Background: Investigation on the natural radionuclides 238U, 232Th, 40K and natural fallout radionuclide 210Po in the prominent plants species of Western Ghats tropical forest near Kotagiri have been carried out as a part of baseline background radiation studies in the forest environment. Materials and Methods: The prominent plants species of the region Evodia roxburghiana and Eleaoca...
acid In the terminal stages of renal failure, renal trans plantation has become an effective means of treat ment (1,2) . Although survival rates have improved since the availability of adequate immunotherapy, present means of diagnosing the various forms of renal complications leave much to be desired. Since 1966 180 kidney transplantations have been performed at the university clinics in Munic...
All existing 10 Be records from Greenland and Antarctica show increasing concentrations during the Maunder Minimum period (MM), 1645–1715, when solar activity was very low and the climate was colder (little ice age). In detail, however, the 10 Be records deviate from each other. We investigate to what extent climatic changes influence the 5 10 Be measured in ice by modeling this period using th...
to assess the environmental radioactivity levels and hence to determine the population exposure in kutubdia island, bangladesh the sediment samples were analyzed by using gamma ray spectrometry. in those sediment samples the average activity concentration of natural radionuclides 238u, 232th and 40k were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 bq/kg respectively. the activity concentratio...
In therapy imaging there is a need to optimize imaging protocols and different correction methods for e.g. photon attenuation, contribution from scatter and other physicsrelated effects that limits the possibility to achieve accurate quantitative results. Physical phantom studies are important but lack flexibility and are often difficult to make patient realistic. A complement is to simulate th...
Details about gastric physiology and pathophysiology are described. Other methods, some of them not used today, are also mentioned. Gastric emptying by radionuclides is important for checking normal function of the upper digestive system. The fried eggs etc. technique and not the liquid meal technique is preferred. In conclusion, gastric emptying by radionuclides, although other techniques have...
Excitation functions, thinand thick-target yields for the Re radionuclides were measured by the activation method on natural tungsten foils for proton energies up to 17 MeV. A new data set has been given for the investigated radionuclides. These results are compared both with the experimental literature values and the ones calculated by the EMPIRE II code (version 2.19). In particular, the atte...
Selected results are presented and discussed concerning nuclear data relevant to the production of innovative medical radionuclides (RNs) of special interest, measurements of excitation functions of the involved nuclear reactions, in comparison with the corresponding theoretical calculations. Moreover, at the Radiochemistry Laboratory of Accelerators and Applied Superconductivity Laboratory, LA...
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