Demonstration of tomographic imaging of isotope distribution by nuclear resonance fluorescence

被引：16

作者：

Zen, Heishun ^{[1
]}

Ohgaki, Hideaki ^{[1
]}

Taira, Yoshitaka ^{[2
]}

Hayakawa, Takehito ^{[3
]}

Shizuma, Toshiyuki ^{[3
]}

Daito, Izuru ^{[1
,5
]}

Yamazaki, Jun-ichiro ^{[4
]}

Kii, Toshiteru ^{[1
]}

Toyokawa, Hiroyuki ^{[2
]}

Katoh, Masahiro ^{[4
]}

机构：

[1] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Natl Inst Quantum & Radiol Sci & Technol, Tokai, Ibaraki 3191106, Japan

[4] Natl Inst Nat Sci, Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[5] Nippon Adv Technol Co Ltd, Osaka 5670031, Japan

来源：

AIP ADVANCES | 2019年 / 9卷 / 03期

关键词：

ALGEBRAIC RECONSTRUCTION; ITERATIVE RECONSTRUCTION; SCATTERING; RAYS;

D O I：

10.1063/1.5064866

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Computed Tomography (CT) using X-ray attenuation by atomic effects is now widely used for medical diagnosis and industrial non-destructive inspection. In this study, we performed a tomographic imaging of isotope (208Pb) distribution by the Nuclear Resonance Fluorescence (NRF), i.e. isotope specific resonant absorption and scattering of gamma rays, using Laser Compton Scattering (LCS) gamma rays. The NRF-CT image which includes both effects of atomic attenuation and nuclear resonant attenuation was obtained. By accounting for the atomic attenuation measured by a conventional method at the same time, a clear 208Pb isotope CT image was obtained. The contrast degradation due to notch refilling caused by small-angle Compton scattering is discussed. This study clearly demonstrates the capability of the isotope-specific CT imaging based on nuclear resonant attenuation which will be a realistic technique when the next generation of extremely intense LCS gamma-ray sources will be available. The expected image acquisition time using these intense LCS gamma rays was discussed. (C) 2019 Author(s).

引用

页数：7

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