Evidence map›Paper›PMID 37248325›Full record

ArticleScientific reports2023

A laboratory-based beam tracking x-ray imaging method achieving two-dimensional phase sensitivity and isotropic resolution with unidirectional undersampling.

G Lioliou, C Navarrete-León, A Astolfo, S Savvidis, D Bate, M Endrizzi, C K Hagen, A Olivo

Abstract read
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In one paragraph

Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

G LioliouDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK. g.lioliou@ucl.ac.uk.
C Navarrete-LeónDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
A AstolfoDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
S SavvidisDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
D BateDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
M EndrizziDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
C K HagenDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.
A OlivoDepartment of Medical Physics and Biomedical Engineering, University College London, Malet Place, London, WC1E 6BT, UK.

Funding

Engineering and Physical Sciences Research Council EP/T517793/1Royal Academy of Engineering Chair in Emerging TechnologiesRoyal Academy of Engineering Research Fellowship scheme
6 · The paper itself

Abstract

Beam tracking X-ray Phase Contrast Imaging is a "Shack-Hartmann" type approach which uses a pre-sample mask to split the x-rays into "beamlets" which are interrogated by a detector with sufficient resolution. The ultimate spatial resolution is determined by the size of the mask apertures, however achieving this resolution level requires "stepping" the sample or the mask in increments equal to the aperture size ("dithering"). If an array of circular apertures is used (which also provides two-dimensional phase sensitivity) instead of long parallel slits, this stepping needs to be carried out in two directions, which lengthens scan times significantly. We present a mask design obtained by offsetting rows of circular apertures, allowing for two-dimensional sensitivity and isotropic resolution while requiring sample or mask stepping in one direction only. We present images of custom-built phantoms and biological specimens, demonstrating that quantitative phase retrieval and near aperture-limited spatial resolutions are obtained in two orthogonal directions.

Identifiers

PMID37248325
PMCPMC10227046

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.