Calculation of effective atomic number and electron density of essential biomolecules for electron, proton, alpha particle and multi-energetic photon interactions

2015 ◽  
Vol 112 ◽  
pp. 125-138 ◽  
Author(s):  
Murat Kurudirek ◽  
Tayfur Onaran
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Alpha Particle ◽  
Effective Atomic Number ◽  
Photon Interactions ◽  
Energetic Photon

Effective atomic number and electron density of some biologically important lipids for electron, proton, alpha particle and photon interactions

2020 ◽  
Vol 160 ◽  
pp. 109137 ◽  
Author(s):  
Srilakshmi Prabhu ◽  
A.C. Sneha ◽  
Pooja P. Shetty ◽  
Arundati A. Narkar ◽  
S.G. Bubbly ◽  
...  
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Alpha Particle ◽  
Effective Atomic Number ◽  
Photon Interactions

Electron Density and Effective Atomic Number Measurement by Using a Newly Developing Photon Counting CT System

2020 ◽  
Vol 38 ◽  
pp. 93-99
Author(s):  
Hiroshi Sakurai ◽  
Kazushi Hoshi ◽  
Yosuke Harasawa ◽  
Daiki Ono ◽  
Kun Zhang ◽  
...  
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Photon Counting ◽  
Effective Atomic Number ◽  
Image Data ◽  
Detector Response ◽  
Simple Method ◽  
Attenuation Coefficients ◽  
X Ray ◽  
Ct System

We developed the photon counting CT system by using a conventional laboratory X-ray source and a CdTe line sensor. Attenuation coefficients were obtained from the measured CT image data. Our suggested method for deriving the electron density and effective atomic number from the measured attenuation coefficients was tested experimentally. The accuracy of the electron densities and effective atomic numbers are about <5 % (the averages of absolute values are 2.6 % and 3.1 %, respectively) for material of 6< Z and Zeff <13. Our suggested simple method, in which we do not need the exact source X-ray spectrum and detector response function, achieves comparable accuracy to the previous reports.

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