Evidence map›Paper›PMID 31243814›Full record

ArticleMagnetic resonance in medicine2019

In vivo demonstration of microscopic anisotropy in the human kidney using multidimensional diffusion MRI.

Fabio Nery, Filip Szczepankiewicz, Leevi Kerkelä, Matt G Hall, Enrico Kaden, Isky Gordon, David L Thomas, Chris A Clark

Open access · hybridAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.8field-weighted citation impact, top 7% of its field
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

22 citing papers in PubMed, 34 citations in OpenAlex.

  1. Diffusion MRI of the Body: Beyond PGSE-EPI.Journal of magnetic resonance imaging : JMRI · 2026
    Review
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  14. Nonparametric 5D D-RJournal of magnetic resonance (San Diego, Calif. : 1997) · 2022
    Article
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  18. Mapping kidney tubule diameter ex vivo by diffusion MRI.American journal of physiology. Renal physiology · 2021
    Article
  19. Article
  20. Review
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 at 5 institutions in 4 countries.

Fabio NeryDevelopmental Imaging and Biophysics Section, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.ORCID 0000-0002-4220-0997
Filip SzczepankiewiczDepartment of Radiology, Brigham and Women's Hospital, Boston, Massachusetts.ORCID 0000-0002-5251-587X
Leevi KerkeläDevelopmental Imaging and Biophysics Section, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
Matt G HallDevelopmental Imaging and Biophysics Section, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
Enrico KadenCentre for Medical Image Computing, University College London, London, United Kingdom.
Isky GordonDevelopmental Imaging and Biophysics Section, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
David L ThomasLeonard Wolfson Experimental Neurology Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.
Chris A ClarkDevelopmental Imaging and Biophysics Section, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
Great Ormond Street Hospital · GBBrigham and Women's Hospital · USNational Physical Laboratory · GBQueen Mary University of London · GBUniversity College London · GB

Funding

Training and DisseminationP41EB015902 · NIBIB · BRIGHAM AND WOMEN'S HOSPITAL · PI KIKINIS, RON, WESTIN, CARL-FREDRIK · 2012 to 2022
$20.9M
NIBIB NIH HHS P41 EB015902
6 · The paper itself

Abstract

purposeTo demonstrate the feasibility of multidimensional diffusion MRI to probe and quantify microscopic fractional anisotropy (µFA) in human kidneys in vivo.

methodsLinear tensor encoded (LTE) and spherical tensor encoded (STE) renal diffusion MRI scans were performed in 10 healthy volunteers. Respiratory triggering and image registration were used to minimize motion artefacts during the acquisition. Kidney cortex-medulla were semi-automatically segmented based on fractional anisotropy (FA) values. A model-free analysis of LTE and STE signal dependence on b-value in the renal cortex and medulla was performed. Subsequently, µFA was estimated using a single-shell approach. Finally, a comparison of conventional FA and µFA is shown.

resultsThe hallmark effect of µFA (divergence of LTE and STE signal with increasing b-value) was observed in all subjects. A statistically significant difference between LTE and STE signal was found in the cortex and medulla, starting from b = 750 s/mm

conclusionThe feasibility of combining LTE and STE diffusion MRI to probe and quantify µFA in human kidneys is demonstrated for the first time. By doing so, we show that novel microstructure information-not accessible by conventional diffusion encoding-can be probed by multidimensional diffusion MRI. We also identify relevant technical limitations that warrant further development of the technique for body MRI.

Indexed as

AnisotropyDiffusion Magnetic Resonance ImagingAdultArtifactsFemaleHealthy VolunteersHumansImage Processing, Computer-AssistedKidneyKidney MedullaMaleMotiondiffusionfractional anisotropykidneymicroscopic anisotropyspherical tensor encodingtensor-valued diffusion encoding

Identifiers

PMID31243814
PMCPMC6988820
OpenAlexW2953575207

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.