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http://hdl.handle.net/2248/5610
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DC Field | Value | Language |
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dc.contributor.author | Chatterjee, S | - |
dc.contributor.author | Vyas, A | - |
dc.contributor.author | Ravanfar Haghighi, R | - |
dc.contributor.author | Kumar, P | - |
dc.date.accessioned | 2011-11-09T10:49:39Z | - |
dc.date.available | 2011-11-09T10:49:39Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Journal of Biomedical Physics and Engineering, Vol 1, No 1, pp. 22-27 | en |
dc.identifier.uri | http://hdl.handle.net/2248/5610 | - |
dc.description.abstract | Introduction: The photoelectric attenuation coefficient of substances is known to depend upon the energy E of the photon and the effective atomic number of substances (Zeff) as (Zeff x/Ey). No definitive values about these indices x, y are given in the literature. The index x is said to lie between, 3.0 and 4.0, while for ‘y’ different values have been assigned, between 3.0 and 4.0. Methodology: We followed a methodology to find both the exponent y explicitly, from a formula which does not contain x. Through this way, the risk of one parameter leading to an estimation error for the other is automatically eliminated. With the value of y being unmistakably established, we determined the exponent x for different elements. Results: It was found from the NIST data that ‘y’ = 3.0669 for most substances with low atomic number but no single value can be assigned for the exponent ‘x’. Conclusions: These results help us to perform model calculations for the attenuation coefficients of different substances. They can also provide important inputs for the diagnostic purposes in the DECT method. | en |
dc.language.iso | en | en |
dc.publisher | Global Center for Advanced Research in Biomedical Physics and Biomedical Engineering | en |
dc.relation.uri | http://www.jbpe.ir/Journal_OJS/JBPE/index.php/jbpe/article/view/5 | en |
dc.rights | © Global Center for Advanced Research in Biomedical Physics and Biomedical Engineering | en |
dc.subject | X-ray | en |
dc.subject | Photoelectric effect | en |
dc.subject | Attenuation coefficient | en |
dc.subject | Photon energy | en |
dc.title | The Energy Dependence of the Photoelectric Attenuation Coefficient of Substances | en |
dc.type | Article | en |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
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The Energy Dependence of the Photoelectric Attenuation Coefficient of Substances.pdf | Open Access | 1.18 MB | Adobe PDF | View/Open |
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