Neutron uniformity studies related to clinical total body in vivo neutron activation analysis. 1978

A Elliott, and I Holloway, and K Boddy, and J K Haywood, and D Williams

Methods of assessing the uniformity of thermal and fast neutron fluence in relation to total body in vivo neutron activation analysis are described. Results are presented for 14 MeV neutrons emitted by sealed tube generators housed in a massive concrete shield, representing a substantial source of neutrons degraded in energy. Optimisation of conditions for patient irradiations is discussed and it is shown that acceptable uniformity of fluence can be achieved with little or no premoderation of the incident neutrons.

UI MeSH Term Description Entries
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D009501 Neutron Activation Analysis Activation analysis in which the specimen is bombarded with neutrons. Identification is made by measuring the resulting radioisotopes. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Activation Analysis, Neutron,Analysis, Neutron Activation,Activation Analyses, Neutron,Analyses, Neutron Activation,Neutron Activation Analyses
D009502 Neutrons Electrically neutral elementary particles found in all atomic nuclei except light hydrogen; the mass is equal to that of the proton and electron combined and they are unstable when isolated from the nucleus, undergoing beta decay. Slow, thermal, epithermal, and fast neutrons refer to the energy levels with which the neutrons are ejected from heavier nuclei during their decay. Neutron
D005214 Fast Neutrons Neutrons, the energy of which exceeds some arbitrary level, usually around one million electron volts. Fast Neutron,Neutron, Fast,Neutrons, Fast
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000201 Activation Analysis A method of chemical analysis based on the detection of characteristic radionuclides following a nuclear bombardment. It is also known as radioactivity analysis. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Analysis, Activation,Activation Analyses,Analyses, Activation
D014915 Whole-Body Counting Measurement of radioactivity in the entire human body. Whole Body Counter,Whole-Body Counters,Body Counter, Whole,Body Counters, Whole,Counter, Whole Body,Counter, Whole-Body,Counters, Whole Body,Counters, Whole-Body,Counting, Whole-Body,Whole Body Counters,Whole Body Counting,Whole-Body Counter

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