نتایج جستجو برای: paterson parker table
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Background: The Patterson-Parker table was created in 1934 to determine mg-hr required to deliver the prescribed dose to the treatment area. These tables were created using the dosimetric data for 226Ra that was determined in air and were utilized for dose calculations around implants with Ra-equivalent radionuclides such as 137Cs and 192Ir. Therefore, the differences of the tissue attenuation ...
background: the patterson-parker table was created in 1934 to determine mg-hr required to deliver the prescribed dose to the treatment area. these tables were created using the dosimetric data for 226ra that was determined in air and were utilized for dose calculations around implants with ra-equivalent radionuclides such as 137cs and 192ir. therefore, the differences of the tissue attenuation ...
C. Roberts, S. Hughes, J. H. Naish, K. Holliday, Y. Watson, S. Cheung, G. A. Buonaccorsi, H. Young, N. Clarke, and G. J. Parker Imaging Science and Biomedical Engineering, The University of Manchester, Manchester, Greater Manchester, United Kingdom, Biomedical Imaging Institute, The University of Manchester, Manchester, Greater Manchester, United Kingdom, Paterson Institute for Cancer Research,...
value to define vitamin D deficiency or insufficiency is problematic because of the wide individual variability of the functional effects of vitamin D and interaction with calcium intakes’, and that the current strategy to quantify a defined level of a vitamin D metabolite may be inappropriate. In addition, while studies have predictably respected formalized levels of vitamin D deficiency and i...
We extend the Parker bound on the galactic flux F of magnetic monopoles. By requiring that a small initial seed field must survive the collapse of the protogalaxy, before any regenerative dynamo effects become significant, we develop a stronger bound. The survival and continued growth of an initial galactic seed field ≤ 10G demand that F ≤ 5 × 10(m/10 GeV) cmsecsr. For a given monopole mass, th...
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