Evidence map›Paper›PMID 29266425›Full record

ArticleMagnetic resonance in medicine2018

Simple and robust referencing system enables identification of dissolved-phase xenon spectral frequencies.

Michael A Antonacci, Le Zhang, Alex Burant, Drew McCallister, Rosa T Branca

Open access · greenAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.9field-weighted citation impact, top 23% 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

9 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Compartment-specificZeitschrift fur medizinische Physik · 2025
    Article
  3. Article
  4. Preclinical MRI Using HyperpolarizedMolecules (Basel, Switzerland) · 2022
    Review
  5. HyperpolarizedMagnetic resonance in medicine · 2022
    Review
  6. In vivo methods and applications of xenon-129 magnetic resonance.Progress in nuclear magnetic resonance spectroscopy · 2021
    Review
  7. Dissolved hyperpolarized xenon-129 MRI in human kidneys.Magnetic resonance in medicine · 2020
    Article
  8. Article
  9. 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

5 authors at 1 institution in 1 country.

Michael A AntonacciDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina, USA.ORCID 0000-0001-9363-3234
Le ZhangBiomedical Research Imaging Center, University of North Carolina at Chapel Hill, North Carolina, USA.ORCID 0000-0003-1841-1986
Alex BurantDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina, USA.
Drew McCallisterDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina, USA.
Rosa T BrancaDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina, USA.
University of North Carolina at Chapel Hill · US

Funding

Sensitive and Specific detection of BAT Tissue and Activity by Magnetic Resonance with Hyperpolarized Xe-129R01DK108231 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BRANCA, ROSA TAMARA · 2015 to 2019
$1.6M
NIDDK NIH HHS R01 DK108231
6 · The paper itself

Abstract

purposeTo assess the effect of macroscopic susceptibility gradients on the gas-phase referenced dissolved-phase

methodsFrequency shifts induced by spatially varying magnetic susceptibility are calculated by finite-element analysis for the human head and chest. Their effect on traditional gas-phase referenced DPXe CS is then assessed theoretically and experimentally. A water-based referencing system for the DPXe resonances that uses the local water protons as reference is proposed and demonstrated in vivo in rats.

resultsAcross the human brain, macroscopic susceptibility gradients can induce an apparent variation in the DPXe CS of up to 2.5 ppm. An additional frequency shift as large as 6.5 ppm can exist between DPXe and gas-phase resonances. By using nearby water protons as reference for the DPXe CS, the effect of macroscopic susceptibility gradients is eliminated and consistent CS values are obtained in vivo, regardless of shimming conditions, region of interest analyzed, animal orientation, or lung inflation. Combining in vitro and in vivo spectroscopic measurements finally enables confident assignment of some of the DPXe peaks observed in vivo.

conclusionTo use hyperpolarized xenon as a biological probe in tissues, the DPXe CS in specific organs/tissues must be reliably measured. When the gas-phase is used as reference, variable CS values are obtained for DPXe resonances. Reliable peak assignments in DPXe spectra can be obtained by using local water protons as reference. Magn Reson Med 80:431-441, 2018. © 2017 International Society for Magnetic Resonance in Medicine.

Indexed as

AnimalsBrainHeadHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleRatsRats, Inbred F344Signal Processing, Computer-AssistedThoraxXenon IsotopesXenon Isotopeschemical shifthyperpolarized xenonmagnetic resonance spectroscopysusceptibility gradientsxenon spectroscopy

Identifiers

PMID29266425
PMCPMC5910273
OpenAlexW2777362721

What OpenQuestion holds

Textmetadata
LicenceTDM
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.