Noise texture and signal detectability in propagation‐based x‐ray phase‐contrast tomography

CY Chou, MA Anastasio - Medical physics, 2010 - Wiley Online Library
Purpose X‐ray phase‐contrast tomography (PCT) is a rapidly emerging imaging modality for
reconstructing estimates of an object's three‐dimensional x‐ray refractive index distribution …

Influence of imaging geometry on noise texture in quantitative in-line X-ray phase-contrast imaging

CY Chou, MA Anastasio - Optics Express, 2009 - opg.optica.org
Quantitative in-line X-ray phase-contrast imaging methods seek to reconstruct separate
images that depict an object's projected absorption and refractive properties. An …

Image reconstruction in quantitative X-ray phase-contrast imaging employing multiple measurements

CY Chou, Y Huang, D Shi, MA Anastasio - Optics express, 2007 - opg.optica.org
X-ray phase-contrast imaging is a technique that aims to reconstruct the projected
absorption and refractive index distributions of an object. One common feature of …

Noise propagation in x-ray phase-contrast imaging and computed tomography

YI Nesterets, TE Gureyev - Journal of Physics D: Applied Physics, 2014 - iopscience.iop.org
Three phase-retrieval algorithms, based on the transport-of-intensity equation and on the
contrast transfer function for propagation-based imaging, and on the linearized geometrical …

Effectiveness of X-ray phase-contrast tomography: effects of pixel size and magnification on image noise

L Brombal - Journal of Instrumentation, 2020 - iopscience.iop.org
Noise magnitude in conventional attenuation X-ray tomography (CT) is strongly dependent
on the pixel size and/or the geometrical magnification, thereby limiting the possibility of …

Analytical evaluation of the signal and noise propagation in x-ray differential phase-contrast computed tomography

R Raupach, TG Flohr - Physics in Medicine & Biology, 2011 - iopscience.iop.org
We analyze the signal and noise propagation of differential phase-contrast computed
tomography (PCT) compared with conventional attenuation-based computed tomography …

Noise properties of grating‐based x‐ray phase contrast computed tomography

T Köhler, K Jürgen Engel, E Roessl - Medical physics, 2011 - Wiley Online Library
Purpose: To investigate the properties of tomographic grating‐based phase contrast
imaging with respect to its noise power spectrum and the energy dependence of the …

Tomographic phase and attenuation extraction for a sample composed of unknown materials using x-ray propagation-based phase-contrast imaging

SJ Alloo, DM Paganin, KS Morgan, TE Gureyev… - Optics Letters, 2022 - opg.optica.org
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 …

A new image reconstruction method to improve noise properties in x-ray differential phase contrast computed tomography

K Li, N Bevins, J Zambelli… - Medical Imaging 2012 …, 2012 - spiedigitallibrary.org
The noise properties of differential phase contrast CT (DPC-CT) demonstrate some peculiar
features. It has been both theoretically and experimentally demonstrated that the noise …

Model-based iterative reconstruction for propagation-based phase-contrast x-ray ct including models for the source and the detector

L Hehn, R Gradl, M Dierolf, KS Morgan… - … on Medical Imaging, 2019 - ieeexplore.ieee.org
Propagation-based phase-contrast X-ray computed tomography is a valuable tool for high-
resolution visualization of biological samples, giving distinct improvements in terms of …