Phase tomography from x-ray coherent diffractive imaging projections

被引：164

作者：

Guizar-Sicairos, Manuel ^{[1
]}

Diaz, Ana ^{[1
]}

Holler, Mirko ^{[1
]}

Lucas, Miriam S. ^{[2
]}

Menzel, Andreas ^{[1
]}

Wepf, Roger A. ^{[2
]}

Bunk, Oliver ^{[1
]}

机构：

[1] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[2] Electron Microscopy ETH Zurich, CH-8093 Zurich, Switzerland

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 22期

关键词：

RESOLUTION; RETRIEVAL; MICROSCOPY; RECONSTRUCTION; ALGORITHMS;

D O I：

10.1364/OE.19.021345

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Coherent diffractive imaging provides accurate phase projections that can be tomographically combined to yield detailed quantitative 3D reconstructions with a resolution that is not limited by imaging optics. We present robust algorithms for post-processing and alignment of these tomographic phase projections. A simple method to remove undesired constant and linear phase terms on the reconstructions is given. Also, we provide an algorithm for automatic alignment of projections that has good performance even for samples with no fiducial markers. Currently applied to phase projections, this alignment algorithm has proven to be robust and should also be useful for lens-based tomography techniques that pursue nanoscale 3D imaging. Lastly, we provide a method for tomographic reconstruction that works on phase projections that are known modulo 2 pi, such that the phase unwrapping step is avoided. We demonstrate the performance of these algorithms by 3D imaging of bacteria population in legume root-nodule cells. (C) 2011 Optical Society of America

引用

页码：21345 / 21357

页数：13

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[1] From tissue to cellular ultrastructure: closing the gap between micro- and nanostructural imaging [J].