Multiple Contrast Micro-Computed Tomography System Based on X-Ray Grating Imaging

Juncheng, 戚俊成 Qi; Yuqi, 任玉琦 Ren; Guohao, 杜国浩 Du; Rongchang, 陈荣昌 Chen; Yudan, 王玉丹 Wang; You, 和友 He; Tiqiao, 肖体乔 Xiao

doi:10.3788/aos201333.1034001

Cited by 7 publications

(3 citation statements)

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“…The edge-enhanced images produced by the propagation-based phase contrast imaging approach are very useful, and allow the visualization of boundaries with different refraction properties. Dynamic X-ray phase contrast imaging, X-ray phase contrast micro-CT and other new techniques of X-ray imaging, such as X-ray fluorescence computed tomography, grating-based differential phase-contrast imaging, fast micro-CT, local micro-CT and spiral micro-CT have been currently realized at BL13W1 [53][54][55][56][57][58][59][60][61].The overall layout for the phase contrast imaging system of BL13W1 is shown in figure 6. identification of CMMs by X-ray phase contrast imaging based on SSRF as early as the first light was obtained at BL13W1.…”

Section: Jinst 11 C07001mentioning

confidence: 99%

Microscopic identification of Chinese medicinal materials based on X-ray phase contrast imaging: from qualitative to quantitative

et al. 2016

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JINST 11 C07001phase contrast micro-CT for investigating the characteristic microstructures of CMMs. During this period, a variety of typical CMMs have been investigated, from two-dimensional (2D) radiography to three-dimensional (3D) micro-CT, from qualitative to quantitative. Taken together, these results verify that quantitative X-ray phase contrast micro-CT is a practical tool for the microscopic investigation of CMMs. Additionally, further efforts are being made to find the relationship between the microstructures' quantitative factors and active chemical components. At present, experimental results have demonstrated that the quality of CMMs can be evaluated directly via the quantitative information of their characteristic microstructures. K: Computerized Tomography (CT) and Computed Radiography (CR); X-ray radiography and digital radiography (DR)

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Section: Jinst 11 C07001mentioning

confidence: 99%

Microscopic identification of Chinese medicinal materials based on X-ray phase contrast imaging: from qualitative to quantitative

et al. 2016

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“…X 射线成像技术在医学检查、工业无损探伤、安检等领域一直发挥着重要的作用。传统 X 射线成像的物理机制是利用 X 射线透过物体后的衰减差异而形成图像衬度。然而，对于由轻元素为主要成分构成的物质，例如材料领域中光纤材料、碳纤维材料及器件、硅材料及器件和有机材料及器件等，医疗领域中人体的软骨、血管、软组织和早期肿瘤等，它们对 X 射线的吸收差异很小，很难形成清晰的图像。X 射线相衬成像技收稿日期: 2015-09-09; 收到修改稿日期: 2015- [10][11][12][13][14][15][16][17][18][19] 基金项目: 国家 973 计划 (2012CB825804)、国家自然科学基金科学仪器基础研究专款 (61227802)、国家自然科学基金 (11074172)、国家自然科学基金青年科学基金 (11404221)、中国博士后面上基金 (2014M562204)、中国博士后基金特别资助 (2015T80914)、深圳市科创委基础研究项目基金(JCYJ20150525092941019) 作者简介: 杜杨(1983-)，男，博士，主要从事 X 射线光栅微分相衬成像方面的研究。E-mail: wolfduyang@163.com *通信联系人。E-mail: liji@szu.edu.cn 光学学报…”

Section: 引言unclassified

“…术是近年来发展较快的一种新的成像方法，是对常规 X 射线成像技术的重大发展。它利用 X 射线透过物体后产生的相位变化对物体进行成像，由于 X 射线对轻元素物质的相位因子δ改变量要比吸收因子β改变量大 1000 倍以上 [1] ，就轻元素而言， X 射线相衬成像技术要比传统的吸收成像技术更加灵敏。目前，研究 X 射线相衬成像的方法主要有晶体干涉法 [2][3][4] 、衍射增强法 [5][6][7] 、同轴相位传播法 [8,9] 和光栅微分相衬成像法 [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] 12,13]…”

Section: -unclassified

Low Cost and High Efficiency Method for X-ray Phase Contrast Imaging

Yang¹,

Xin²,

Yaohu³

et al. 2016

光学学报

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Grating-based X-ray differential phase contrast imaging has great advantages of detecting the low-Z materials compared with conventional X-ray absorption imaging. It has potential applications in the field of materials, security and medical diagnostics. The fabrication process of absorption grating which is a critical optical component in the system is difficult and costly, and the absorption grating cannot completely absorb high-energy X-rays that results in the decrease of image contrast and detection sensitivity, which has been a great obstacle for the practical application. In view of above problems, a low cost and high efficiency approach based on Bi-source grating and structured scintillator is proposed. The scintillator overcomes the limitation of high-energy X-rays and proposes the function of analyzer grating. This approach obtains high quality phase contrast image experimentally.

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X‐ray Imaging for Non‐Destructive Microstructure Analysis at SSRF

et al. 2014

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The X-ray imaging beamline at the Shanghai Synchrotron Radiation Facility is aimed at developing and evaluating the effectiveness of synchrotron radiation (SR)-based imaging techniques in planar or computed tomography modalities. Several X-ray imaging methods are in use and find extensive applications in many research fields. In this Essay, the status of the methodology development at the beamline is discussed and applications are reviewed.

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Multiple Contrast Micro-Computed Tomography System Based on X-Ray Grating Imaging

Cited by 7 publications

References 0 publications

Microscopic identification of Chinese medicinal materials based on X-ray phase contrast imaging: from qualitative to quantitative

Microscopic identification of Chinese medicinal materials based on X-ray phase contrast imaging: from qualitative to quantitative

Low Cost and High Efficiency Method for X-ray Phase Contrast Imaging

X‐ray Imaging for Non‐Destructive Microstructure Analysis at SSRF

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