Polychromatic cone-beam phase-contrast tomography
Polychromatic cone-beam phase-contrast tomography
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DOI：
10.1103/physreva.76.045804
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发表时间：
2007-10-01
影响因子：
2.9
通讯作者：
Wilkins, S. W.
中科院分区：
文献类型：
--
作者：
Myers, G. R.;Mayo, S. C.;Wilkins, S. W.
提出了一种利用小多色光源的未滤波辐射进行定量相衬层析成像的方法。在给定每个视角的单个投影图像的情况下，重构单晶物体中的复折射率的三维分布。重建算法是消色差和稳定的高空间频率噪声，在传统的断层扫描。在测试样品中的密度分布准确地重建从多色相衬数据收集与点投影X射线显微镜。
A method is presented for quantitative phase-contrast tomography using unfiltered radiation from a small polychromatic source. The three-dimensional distribution of complex refractive index in a monomorphous object is reconstructed given a single projection image per view angle. The reconstruction algorithm is achromatic and stable with respect to high-spatial-frequency noise, in contrast to conventional tomography. The density distribution in a test sample was accurately reconstructed from polychromatic phase-contrast data collected with a point-projection x-ray microscope.