Compressed sensing electron tomography of needle-shaped biological specimens - Potential for improved reconstruction fidelity with reduced dose

Saghi Z, Divitini G, Winter B, Leary R, Spiecker E, Ducati C, Midgley PA (2016)

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Ultramicroscopy Elsevier

Publisher: Elsevier

Book Volume: 160

Pages Range: 230-238

DOI: 10.1016/j.ultramic.2015.10.021

Abstract

Electron tomography is an invaluable method for 3D cellular imaging. The technique is, however, limited by the specimen geometry, with a loss of resolution due to a restricted tilt range, an increase in specimen thickness with tilt, and a resultant need for subjective and time-consuming manual segmentation. Here we show that 3D reconstructions of needle-shaped biological samples exhibit isotropic resolution, facilitating improved automated segmentation and feature detection. By using scanning transmission electron tomography, with small probe convergence angles, high spatial resolution is maintained over large depths of field and across the tilt range. Moreover, the application of compressed sensing methods to the needle data demonstrates how high fidelity reconstructions may be achieved with far fewer images (and thus greatly reduced dose) than needed by conventional methods. These findings open the door to high fidelity electron tomography over critically relevant length-scales, filling an important gap between existing 3D cellular imaging techniques. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Authors with CRIS profile

Benjamin Apeleo Zubiri Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM) Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM) Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Involved external institutions

University of Cambridge GB United Kingdom (GB)

How to cite

APA:

Saghi, Z., Divitini, G., Winter, B., Leary, R., Spiecker, E., Ducati, C., & Midgley, P.A. (2016). Compressed sensing electron tomography of needle-shaped biological specimens - Potential for improved reconstruction fidelity with reduced dose. Ultramicroscopy, 160, 230-238. https://doi.org/10.1016/j.ultramic.2015.10.021

MLA:

Saghi, Zineb, et al. "Compressed sensing electron tomography of needle-shaped biological specimens - Potential for improved reconstruction fidelity with reduced dose." Ultramicroscopy 160 (2016): 230-238.

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