Evidence map›Paper›PMID 34624719›Full record

ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2021

An open-source, low-cost NMR spectrometer operating in the mT field regime.

Nicholas Bryden, Michael Antonacci, Michele Kelley, Rosa T Branca

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Background-Free Detection of Spin-Exchange Dynamics at Ultra-Low Magnetic Field.Chemphyschem : a European journal of chemical physics and physical chemistry · 2023
    Article
  4. EnhancedMagnetic resonance in medicine · 2023
    Article
  5. Longitudinal nuclear spin relaxation ofMagnetic resonance in medicine · 2022
    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

4 authors.

Nicholas BrydenDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Michael AntonacciDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Michele KelleyDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Rosa T BrancaDepartment of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. Electronic address: rtbranca@physics.unc.edu.

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
Enabling accurate identification and quantification of brown adipose tissue mass by xenon enhanced computed tomographyR01DK123206 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BRANCA, ROSA TAMARA · 2020 to 2021
$866k
NIDDK NIH HHS R01 DK108231NIDDK NIH HHS R01 DK123206
6 · The paper itself

Abstract

In recent years, low field and ultra-low field NMR spectrometers have gained interest due to their portability, lower cost, and reduced subject-induced magnetic field inhomogeneities. Here, we describe the design of a low-cost multinuclear NMR spectrometer operating in the ultra-low field regime (ULF), which possesses high spectral resolution and enables arbitrary pulse programming. An inexpensive multifunction input/output (I/O) device is used to handle waveform generation and digitization in the kHz operating range. A home-built radio frequency (RF) mixing circuit is used to down-mix the NMR signals, allowing for the slower sampling rates and lower memory requirements needed to enable minute-long acquisitions using a standard Windows PC. The LabVIEW code, along with a bill of materials for all components used in the spectrometer, is included. As proof of concept,

Indexed as

HyperpolarizedLabVIEW digital spectrometerLow-field NMR

Identifiers

PMID34624719
PMCPMC9208334

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.