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Signal-to-noise, spatial resolution and information capacity of coherent diffraction imaging Gureyev, T, Kozlov, A, Nesterets, Y, Paganin, D, Martin, A and Quiney, H 2018, 'Signal-to-noise, spatial resolution and information capacity of coherent diffraction imaging', IUCrJ, vol. 5, no. 6, pp. 716-726. Document type: Journal Article Collection: Journal Articles Title Signal-to-noise, spatial resolution and information capacity of coherent diffraction imaging Author(s) Gureyev, T Kozlov, A Nesterets, Y Paganin, D Martin, A Quiney, H Year 2018 Journal name IUCrJ Volume number 5 Issue number 6 Start page 716 End page 726 Total pages 11 Publisher International Union of Crystallography Abstract It is shown that the average signal-to-noise ratio (SNR) in the three-dimensional electron-density distribution of a sample reconstructed by coherent diffractive imaging cannot exceed twice the square root of the ratio of the mean total number of scattered photons detected during the scan and the number of spatially resolved voxels in the reconstructed volume. This result leads to an upper bound on Shannon's information capacity of this imaging method by specifying the maximum number of distinguishable density distributions within the reconstructed volume when the radiation dose delivered to the sample and the spatial resolution are both fixed. If the spatially averaged SNR in the reconstructed electron density is fixed instead, the radiation dose is shown to be proportional to the third or fourth power of the spatial resolution, depending on the sampling of the three-dimensional diffraction space and the scattering power of the sample. Subject Condensed Matter Imaging Keyword(s) coherent diffractive imaging information capacitys signal-to-noise ratio spatial resolution DOI - identifier 10.1107/S2052252518010941 Copyright notice © 2018 Timur E. Gureyev et al. ISSN 2052-2525 Related Links Link Description https://dx.doi.org/10.1107/S2052252518010941 Link to Published Version   Versions Version Filter Type Thu, 21 Feb 2019, 13:57:36 EST Filtered Full Citation counts:   Cited 2 times in Thomson Reuters Web of Science Article | Citations Cited 0 times in Scopus Article Altmetric details: Access Statistics: 10 Abstract Views  -  Detailed Statistics Created: Thu, 21 Feb 2019, 12:10:00 EST by Catalyst Administrator