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Improving radiation dose efficiency of X-ray differential phase contrast imaging using an energy-resolving grating interferometer and a novel rank constraint

机译：使用能量分辨光栅干涉仪和新型秩约束提高X射线微分相衬成像的辐射剂量效率

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摘要

In this paper, a novel method was developed to improve the radiation dose efficiency, viz., contrast to noise ratio normalized by dose (CNRD), of the grating-based X-ray differential phase contrast (DPC) imaging system that is integrated with an energy-resolving photon counting detector. The method exploits the low-dimensionality of the spatial-spectral DPC image matrix acquired from different energy windows. A low rank approximation of the spatial-spectral image matrix was developed to reduce image noise while retaining the DPC signal accuracy for every energy window. Numerical simulations and experimental phantom studies have been performed to validate the proposed method by showing noise reduction and CNRD improvement for each energy window.

机译：在本文中，开发了一种新颖的方法来提高与之集成的基于光栅的X射线微分相位对比（DPC）成像系统的辐射剂量效率，即与按剂量归一化的噪声比（CNRD）形成对比。能量分辨光子计数检测器。该方法利用了从不同能量窗口获取的空间光谱DPC图像矩阵的低维性。开发了空间光谱图像矩阵的低秩近似，以减少图像噪声，同时保留每个能量窗口的DPC信号精度。通过显示每个能量窗口的降噪和CNRD改善，已经进行了数值模拟和实验模型研究以验证所提出的方法。

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期刊名称 Optics Express
作者
Yongshuai Ge; Ran Zhang; Ke Li; Guang-Hong Chen;
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作者单位

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年(卷),期 -1(24),12
年度 -1
页码 12955–12968
总页数 14
原文格式 PDF
正文语种
中图分类情报学;
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专利

1. Differential X-ray phase-contrast imaging with a grating interferometer using a laboratory X-ray micro-focus tube [J] . Yoon Kwon-Ha, Ryu Jong Hyun, Jung Chang Won, Journal of the Korean Physical Society . 2014,第12期

机译：使用实验室X射线微聚焦管的光栅干涉仪进行差分X射线相衬成像
2. Phase Unwrapping in Spectral X-Ray Differential Phase-Contrast Imaging With an Energy-Resolving Photon-Counting Pixel Detector [J] . Epple Franz M., Ehn Sebastian, Thibault Pierre, Medical Imaging, IEEE Transactions on . 2015,第3期

机译：带有能量分辨光子计数像素检测器的光谱X射线微分相衬成像中的相位展开
3. Development of x-ray scintillator functioning also as an analyser grating used in grating-based x-ray differential phase contrast imaging [J] . 雷耀虎, 刘鑫, 郭金川, 中国物理：英文版 . 2011,第004期

机译：X射线闪烁器的开发也可以用作基于光栅的X射线微分相位对比成像中使用的分析仪光栅
4. Weighted singular value decomposition (wSVD) to improve the radiation dose efficiency of grating based x-ray phase contrast imaging with a photon counting detector [C] . Xu Ji, Yongshuai Ge, Ran Zhang, Conference on Physics of Medical Imaging . 2017

机译：加权奇异值分解（wSVD），可通过光子计数检测器提高基于光栅的X射线相衬成像的辐射剂量效率
5. Patient Specific Radiation Doses from Projection Radiography Images: Improving the Accuracy of Low Dose Radiation Calculations [D] . Sandoval, Daniel J. 2018

机译：患者特异性放射线从投影射线照相图像中的图像图像：提高低剂量辐射计算的准确性
6. Subnanoradian X-ray phase-contrast imaging using a far-field interferometer of nanometric phase gratings [O] . Han Wen, Andrew A. Gomella, Ajay Patel, -1

机译：使用纳米相光栅远场干涉仪的亚纳米级X射线相衬成像
7. Improving radiation dose efficiency of X-ray differential phase contrast imaging using an energy-resolving grating interferometer and a novel rank constraint [O] . Yongshuai Ge, Ran Zhang, Ke Li, 2016

机译：利用能量 - 分辨光栅干涉仪和新的秩约束提高X射线差分相位对比度成像的辐射剂量效率

Improving radiation dose efficiency of X-ray differential phase contrast imaging using an energy-resolving grating interferometer and a novel rank constraint

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