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Tomographic Collection of Block-Based Sparse STEM Images: Practical Implementation and Impact on the Quality of the 3D Reconstructed Volume

Institut Curie, Inserm U1196, CNRS UMR 9187, Université Paris Sud, Centre Universitaire, Bât. 110-112, 91405 Orsay CEDEX, France
Materials 2019, 12(14), 2281; https://doi.org/10.3390/ma12142281
Received: 15 June 2019 / Revised: 9 July 2019 / Accepted: 11 July 2019 / Published: 16 July 2019
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Abstract

The reduction of the electron dose in electron tomography of biological samples is of high significance to diminish radiation damages. Simulations have shown that sparse data collection can perform efficient electron dose reduction. Frameworks based on compressive-sensing or inpainting algorithms have been proposed to accurately reconstruct missing information in sparse data. The present work proposes a practical implementation to perform tomographic collection of block-based sparse images in scanning transmission electron microscopy. The method has been applied on sections of chemically-fixed and resin-embedded Trypanosoma brucei cells. There are 3D reconstructions obtained from various amounts of downsampling, which are compared and eventually the limits of electron dose reduction using this method are explored. View Full-Text
Keywords: scanning transmission electron microscopy (STEM); electron tomography (ET); sparse imaging; inpainting reconstruction; biological samples; Trypanosoma brucei scanning transmission electron microscopy (STEM); electron tomography (ET); sparse imaging; inpainting reconstruction; biological samples; Trypanosoma brucei
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Trépout, S. Tomographic Collection of Block-Based Sparse STEM Images: Practical Implementation and Impact on the Quality of the 3D Reconstructed Volume. Materials 2019, 12, 2281.

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