[10p-E204-1~13] 2.4 Life Sciences, Medical applications, Space and Earth Environment, Radiation Education

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[10p-E204-8] Multi-element Quantification and Imaging Using Photon Counting CT

〇Yuina Sugawara¹, Ryuga Nagahashi¹, Kazushi Hoshi¹, Yuki Furuta¹, Kosuke Suzuki¹, Manabu Takahashi¹, Masami Torikoshi², Hiroshi Sakurai¹ (1.Gunma Univ., 2.QST)

Keywords:

Photon counting CT,Attenuation coefficients,Material Decomposition

In photon counting CT, the acquisition of multi-energy data enables the separation and analysis of three major X-ray interactions: the photoelectric effect, incoherent scattering, and coherent scattering. In this study, we performed elemental quantification of a KCl aqueous solution (a four-element system of H, O, Cl, and K) using the relationship that the X-ray attenuation coefficient spectrum of a material is expressed as a linear combination of the mass attenuation coefficients of its constituent elements. As a result, we successfully quantified the weight ratios of each element with an average error of 4.2%. Furthermore, we extended this quantitative analysis to spatial data—CT images—enabling simultaneous quantification and imaging of multiple elements.