Simultaneous characterization of electron density and effective atomic number for radiotherapy planning using stoichiometric calibration method and dual energy algorithms

2018 ◽  
Vol 41 (3) ◽  
pp. 601-619 ◽  
Author(s):  
Mohammad J. Tahmasebi Birgani ◽  
Maziyar Mahdavi ◽  
Mansour Zabihzadeh ◽  
Mehrzad Lotfi ◽  
Mohammad A. Mosleh-Shirazi
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Calibration Method ◽  
Dual Energy ◽  
Radiotherapy Planning

scholarly journals Effective atomic number and electron density calibration with a dual-energy CT technique

2016 ◽  
Author(s):  
Christian David Trujillo-Bastidas ◽  
Olivia Amanda García-Garduño ◽  
José Manuel Lárraga-Gutiérrez ◽  
Arnulfo Martínez-Dávalos ◽  
Mercedes Rodríguez-Villafuerte
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Technique

Characterization of Incidental Renal Mass With Dual-Energy CT: Diagnostic Accuracy of Effective Atomic Number Maps for Discriminating Nonenhancing Cysts From Enhancing Masses

2017 ◽  
Vol 209 (4) ◽  
pp. W221-W230 ◽  
Author(s):  
Achille Mileto ◽  
Brian C. Allen ◽  
Jason A. Pietryga ◽  
Alfredo E. Farjat ◽  
Jessica G. Zarzour ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Atomic Number ◽  
Renal Mass ◽  
Effective Atomic Number ◽  
Dual Energy ◽  
Dual Energy Ct

Reply to Comment on ‘A new method to measure electron density and effective atomic number using dual-energy CT images’

2016 ◽  
Vol 61 (16) ◽  
pp. 6266-6268
Author(s):  
Luis Isaac Ramos-Garcia ◽  
José Fernando Pérez-Azorin ◽  
Julio F Almansa
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Ct Images ◽  
Dual Energy ◽  
New Method ◽  
Dual Energy Ct

A new method to measure electron density and effective atomic number using dual-energy CT images

2015 ◽  
Vol 61 (1) ◽  
pp. 265-279 ◽  
Author(s):  
Luis Isaac Ramos Garcia ◽  
José Fernando Pérez Azorin ◽  
Julio F Almansa
Keyword(s):  
Electron Density ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Ct Images ◽  
Dual Energy ◽  
New Method ◽  
Dual Energy Ct

Experimental feasibility of dual-energy computed tomography based on the Thomson scattering X-ray source

2018 ◽  
Vol 25 (6) ◽  
pp. 1797-1802 ◽  
Author(s):  
Zhijun Chi ◽  
Yingchao Du ◽  
Lixin Yan ◽  
Dong Wang ◽  
Hongze Zhang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Electron Density ◽  
Light Source ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Thomson Scattering ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
X Ray ◽  
Dual Energy Computed Tomography

Unlike large-scale and expensive synchrotron radiation facilities, the Thomson scattering X-ray source can provide quasi-monochromatic, energy-tunable and high-brightness X-ray pulses with a small footprint and moderate cost, making it an excellent candidate for dual-energy and multi-energy imaging at laboratories and hospitals. Here, the first feasibility study on dual-energy computed tomography (CT) based on this type of light source is reported, and the effective atomic number and electron-density distribution of a standard phantom consisting of polytetrafluoroethylene, water and aluminium is derived. The experiment was carried out at the Tsinghua Thomson scattering X-ray source with peak energies of 29 keV and 68 keV. Both the reconstructed effective atomic numbers and the retrieved electron densities of the three materials were compared with their theoretical values. It was found that these values were in agreement by 0.68% and 2.60% on average for effective atomic number and electron density, respectively. These results have verified the feasibility of dual-energy CT based on the Thomson scattering X-ray source and will further expand the scope of X-ray imaging using this type of light source.

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