Evidence map›Paper›PMID 25088271›Full record

ArticleNMR in biomedicine2014

Characterization of trabecular bone density with ultra-short echo-time MRI at 1.5, 3.0 and 7.0 T--comparison with micro-computed tomography.

Moritz C Wurnig, Maurizio Calcagni, David Kenkel, Magdalena Vich, Markus Weiger, Gustav Andreisek, Felix W Wehrli, Andreas Boss

Abstract readComparative StudyValidation Study
In one paragraph

Article in NMR in biomedicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  8. Bone Biomarkers Based on Magnetic Resonance Imaging.Seminars in musculoskeletal radiology · 2024
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  20. Assessment of alveolar bone marrow fat content using 15 T MRI.Oral surgery, oral medicine, oral pathology and oral radiology · 2018
    Article
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.

Moritz C WurnigDepartment of Diagnostic and Interventional Radiology, University Hospital Zurich, Switzerland.
Maurizio Calcagni
David Kenkel
Magdalena Vich
Markus Weiger
Gustav Andreisek
Felix W Wehrli
Andreas Boss

Funding

Bone Water &Mineralization: Nuclear Magnetic ResonanceR01AR050068 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI WEHRLI, FELIX W · 2003 to 2022
$4.9M
NIAMS NIH HHS R01 AR050068
6 · The paper itself

Abstract

The goal of this study was to test the potential of ultra-short echo-time (UTE) MRI at 1.5, 3.0 and 7.0 T for depiction of trabecular bone structure (of the wrist bones), to evaluate whether T2* relaxation times of bone water and parametric maps of T2* of trabecular bone could be obtained at all three field strengths, and to compare the T2* relaxation times with structural parameters obtained from micro-computed tomography (micro-CT) as a reference standard. Ex vivo carpal bones of six wrists were excised en bloc and underwent MRI at 1.5, 3.0 and 7.0 T in a whole-body MR imager using the head coil. A three-dimensional radial fat-suppressed UTE sequence was applied with subsequent acquisitions, with six different echo times TE of 150, 300, 600, 1200, 3500 and 7000 µs. The T2* relaxation time and pixel-wise computed T2* parametric maps were compared with a micro-computed-tomography reference standard providing trabecular bone structural parameters including porosity (defined as the bone-free fraction within a region of interest), trabecular thickness, trabecular separation, trabecular number and fractal dimension (Dk). T2* relaxation curves and parametric maps could be computed from datasets acquired at all field strengths. Mean T2* relaxation times of trabecular bone were 4580 ± 1040 µs at 1.5 T, 2420 ± 560 µs at 3.0 T and 1220 ± 300 µs at 7.0 T, when averaged over all carpal bones. A positive correlation of T2* with trabecular bone porosity and trabecular separation, and a negative correlation of T2* relaxation time with trabecular thickness, trabecular number and fractal dimension, was detected (p < 0.01 for all field strengths and micro-CT parameters). We conclude that UTE MRI may be useful to characterize the structure of trabecular bone, comparable to micro-CT.

Indexed as

Bone DensityX-Ray MicrotomographyAgedBody WaterBone MarrowCarpal BonesFemaleFourier AnalysisHumansMagnetic Resonance ImagingMaleMiddle AgedPorosityProtonsProtonsapplicationsendogenous contrast methodsmethods and engineering, bonemethods and engineering, quantitationmusculoskeletalpost-acquisition processingrelaxometry

Identifiers

PMID25088271
PMCPMC5730971

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Registered trials

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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.