Considerations for three-dimensional image reconstruction from experimental data in coherent diffractive imaging
- Uppsala Univ., Uppsala (Sweden)
- KTH Royal Institute of Technology, Stockholm (Sweden)
- Univ. of Oxford (United Kingdom)
- Uppsala Univ., Uppsala (Sweden); Czech Academy of Sciences, Prague (Czech Republic); Chalmers Univ. of Technology, Gothenburg (Sweden)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Uppsala Univ., Uppsala (Sweden); European XFEL GmbH, Schenefeld (Germany)
- Chalmers Univ. of Technology, Gothenburg (Sweden)
- SLAC National Accelerator Lab., Stanford, CA (United States); Technische Univ. Berlin, Berlin (Germany); Argonne National Lab. (ANL), Lemont, IL (United States)
- SLAC National Accelerator Lab., Stanford, CA (United States)
- SLAC National Accelerator Lab., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Technische Univ. Berlin, Berlin (Germany)
- SLAC National Accelerator Lab., Stanford, CA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Research Institute for Solid State Physics and Optics, Budapest (Hungary)
- SLAC National Accelerator Lab., Stanford, CA (United States); Argonne National Lab. (ANL), Lemont, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Northwestern Univ., Evanston, IL (United States)
- Uppsala Univ., Uppsala (Sweden); Czech Academy of Science, Prague (Czech Republic)
- SLAC National Accelerator Lab., Stanford, CA (United States); Technische Univ. Berline, Berlin (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Diffraction before destruction using X-ray free-electron lasers (XFELs) has the potential to determine radiation-damage-free structures without the need for crystallization. This article presents the three-dimensional reconstruction of the Melbournevirus from single-particle X-ray diffraction patterns collected at the LINAC Coherent Light Source (LCLS) as well as reconstructions from simulated data exploring the consequences of different kinds of experimental sources of noise. The reconstruction from experimental data suffers from a strong artifact in the center of the particle. This could be reproduced with simulated data by adding experimental background to the diffraction patterns. In those simulations, the relative density of the artifact increases linearly with background strength. This suggests that the artifact originates from the Fourier transform of the relatively flat background, concentrating all power in a central feature of limited extent. We support these findings by significantly reducing the artifact through background removal before the phase-retrieval step. Large amounts of blurring in the diffraction patterns were also found to introduce diffuse artifacts, which could easily be mistaken as biologically relevant features. Other sources of noise such as sample heterogeneity and variation of pulse energy did not significantly degrade the quality of the reconstructions. Larger data volumes, made possible by the recent inauguration of high repetition-rate XFELs, allow for increased signal-to-background ratio and provide a way to minimize these artifacts. In conclusion, the anticipated development of three-dimensional Fourier-volume-assembly algorithms which are background aware is an alternative and complementary solution, which maximizes the use of data.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- K115504; AC02-76SF00515; AC02-05CH11231; SC0012704
- OSTI ID:
- 1468673
- Alternate ID(s):
- OSTI ID: 1475539; OSTI ID: 1477402; OSTI ID: 1480964
- Report Number(s):
- BNL-209371-2018-JAAM; IUCRAJ; PII: S2052252518010047
- Journal Information:
- IUCrJ, Vol. 5, Issue 5; ISSN 2052-2525
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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