Improvement in quantitative phase mapping by a hard x-ray microscope equipped with a Lau interferometer
Improvement in quantitative phase mapping by a hard x-ray microscope equipped with a Lau interferometer
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通过配备 Lau 干涉仪的硬 X 射线显微镜改进定量相位图
DOI：
10.1364/optica.6.001012
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发表时间：
2019
期刊：
影响因子：
10.4
通讯作者：
A. Momose
中科院分区：
文献类型：
--
作者：
H. Takano;Koh Hashimoto;Yukinori Nagatani;J. Irwin;Lars Omlor;Arjun Kumar;A. Tkachuk;Yanlin Wu;A. Momose
x射线相衬成像提供了一种补充模式，仅次于传统的吸收。为了高分辨率地揭示软质材料的内部结构，在市售的蔡司Xradia 800超纳米计算机断层x射线显微镜上安装了劳干涉仪，开发了一种x射线相位成像显微镜。在该系统中，通过干涉条纹的测量产生了双相位图像。为了产生定量的x射线相图，双相图像应进行反褶积处理。然而，传统的反卷积结果显示，由于噪声和伪影，图像质量下降。因此，我们提出并评估了一种迭代反卷积方法的性能。结果表明，与双相图像相比，该反卷积方法不影响空间分辨率，提高了信噪比，能够成像复杂结构。
X-ray phase contrast imaging offers a complementary modality next to conventional absorption. To reveal internal structures of soft materials in high resolution, an X-ray phase imaging microscope has been developed by installing a Lau interferometer into a commercially available ZEISS Xradia 800 Ultra-nano computed tomography X-ray microscope. On this system, a twin phase image is once generated through measurements of interference fringes. In order to produce a quantitative X-ray phase map, the twin phase image should be treated by deconvolution. However, conventional deconvolution results showed a reduction in image quality due to noise and artifacts. Therefore, we propose and evaluate the performance of an iterative deconvolution method. The results show that the proposed deconvolution method does not affect spatial resolution, increases the signal to noise ratio compared to that of the twin phase image, and is capable of imaging complex structures.
影响因子：
2.3
作者：
Kuwabara, Hiroaki;Yashiro, Wataru;Momose, Atsushi
通讯作者：
Momose, Atsushi
影响因子：
2.5
作者：
Hotta, Kohji;Mitsuhara, Kenta;Ikeo, Kazuho
通讯作者：
Ikeo, Kazuho