89 citations · 183 across the 17 of their papers we have counts for
18 papers
Phase-contrast micro-CT for intra-operative breast tumour margin assessment using a microfocus x-ray source and photon-counting detector
Michelle K. Croughan, Timur E. Gureyev, Jane Fox +5
Objective: Intra-operative tumour margin assessment during breast-conserving surgery requires rapid, high-resolution imaging of excised tissue, allowing the surgical team to take a…
Young double-slit interference with single hard x-ray photons
T. E. Gureyev, C. Hall, B. Arhatari +4
Young double-slit experiments using monochromatic hard X-rays with the energy of 25 keV are presented. The experiments were performed at a synchrotron source with a distance of 110…
Fast unified reconstruction algorithm for conventional, phase-contrast and diffraction tomography
Timur E. Gureyev, Hamish G. Brown, Harry M. Quiney +1
A unified method for three-dimensional reconstruction of objects from transmission images collected at multiple illumination directions is described. The method may be applicable t…
Three-dimensional contrast transfer function in phase-contrast tomography
Darren A. Thompson, Yakov I. Nesterets, Konstantin M. Pavlov +1
A new method is developed for three-dimensional (3D) reconstruction of multi-material objects using propagation-based X-ray phase-contrast tomography (PB-CT) with phase retrieval v…
Tomographic phase and attenuation extraction for a sample composed of unknown materials using X-ray propagation-based phase-contrast imaging
Samantha J. Alloo, David M. Paganin, Kaye S. Morgan +9
Propagation-based phase-contrast X-ray imaging (PB-PCXI) generates image contrast by utilizing sample-imposed phase-shifts. This has proven useful when imaging weakly-attenuating s…
Relative roles of multiple scattering and Fresnel diffraction in the imaging of small molecules using electrons, Part II: Differential Holographic Tomography
T. E. Gureyev, H. M. Quiney, A. Kozlov +3
It has been argued that in atomic-resolution transmission electron microscopy (TEM) of sparse weakly scattering structures, such as small biological molecules, multiple electron sc…
Spatial resolution, noise and information in the computational-imaging era
David M. Paganin, Alexander Kozlov, Timur E. Gureyev
Imaging is an important means by which information is gathered regarding the physical world. Spatial resolution and signal-to-noise ratio are underpinning concepts. There is a pauc…
Noise-resolution uncertainty principle in classical and quantum systems
Timur E. Gureyev, Alexander Kozlov, Yakov I. Nesterets +2
It is proved that the width of a function and the width of the distribution of its values cannot be made arbitrarily small simultaneously. In the case of ergodic stochastic process…
Fast three-dimensional phase retrieval in propagation-based x-ray tomography
Darren Thompson, Yakov I. Nesterets, Konstantin M. Pavlov +1
The following paper describes a method for three-dimensional (3D) reconstruction of multi-material objects based on propagation-based X-ray phase-contrast tomography (PB-CT) with p…
On the "unreasonable" effectiveness of Transport of Intensity imaging and optical deconvolution
T. E. Gureyev, Ya. I. Nesterets, A. Kozlov +2
The effectiveness of reconstructive imaging using the Homogeneous Transport of Intensity equation may be regarded as "unreasonable", because it has been shown to significantly incr…
On the van Cittert - Zernike theorem for intensity correlations and its applications
Timur E. Gureyev, Alexander Kozlov, David M. Paganin +3
A reciprocal relationship between the autocovariance of the light intensity in the source plane and in the far-field detector plane is presented in a form analogous to the classica…
CT dose reduction factors in the thousands using X-ray phase contrast
Marcus J. Kitchen, Genevieve A. Buckley, Timur E. Gureyev +6
Phase-contrast X-ray imaging can improve the visibility of weakly absorbing objects (e.g. soft tissues) by an order of magnitude or more compared to conventional radiographs. Previ…
On noise-resolution uncertainty in quantum field theory
Timur E. Gureyev, Alexander Kozlov, Yakov I. Nesterets +2
An uncertainty inequality is presented that establishes a lower limit for the product of the variance of the time-averaged intensity of a mode of a quantized electromagnetic field…
On spatial resolution, signal-to-noise and information capacity of linear imaging systems
Timur Gureyev, Yakov Nesterets, Frank de Hoog
A simple model for image formation in linear shift-invariant systems is considered, in which both the detected signal and the noise variance are varying slowly compared to the poin…
Evaluating the Performance of BSBL Methodology for EEG Source Localization On a Realistic Head Model
Sajib Saha, Rajib Rana, Ya. I. Nesterets +3
Source localization in EEG represents a high dimensional inverse problem, which is severely ill-posed by nature. Fortunately, sparsity constraints have come into rescue as it helps…
Linear algorithms for phase retrieval in the Fresnel region: validity conditions
T. E. Gureyev, Ya. I. Nesterets
We describe the relationship between different forms of linearized expressions for the spatial distribution of intensity of X-ray projection images obtained in the Fresnel region.…
Sparse Bayesian Learning for EEG Source Localization
Sajib Saha, Frank de Hoog, Ya. I. Nesterets +3
Purpose: Localizing the sources of electrical activity from electroencephalographic (EEG) data has gained considerable attention over the last few years. In this paper, we propose…
Evaluation of Spatial Resolution and Noise Sensitivity of sLORETA Method for EEG Source Localization Using Low-Density Headsets
Sajib Saha, Yakov I. Nesterets, Murat Tahtali +1
Electroencephalography (EEG) has enjoyed considerable attention over the past century and has been applied for diagnosis of epilepsy, stroke, traumatic brain injury and other disor…