Evidence map›Paper›PMID 39449244›Full record

ArticleMagnetic resonance in medicine2025

Large improvement in RF magnetic fields and imaging SNR with whole-head high-permittivity slurry helmet for human-brain MRI applications at 7 T.

Soo Han Soon, Xin Li, Matt Waks, Xiao-Hong Zhu, Hannes M Wiesner, Navid P Gandji, Qing X Yang, Michael T Lanagan, Wei Chen

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Magnetic resonance in medicine, 2025. 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. Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain.Advanced materials (Deerfield Beach, Fla.) · 2026
    Article
  2. 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

9 authors.

Soo Han SoonCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0009-0007-8776-9726
Xin LiCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.
Matt WaksCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0000-0003-1743-8888
Xiao-Hong ZhuCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0009-0008-5926-1869
Hannes M WiesnerCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0000-0003-3046-4933
Navid P GandjiCenter for NMR Research, Department of Neurosurgery and Radiology, College of Medicine, Pennsylvania State University, Hershey, Pennsylvania, USA.
Qing X YangCenter for NMR Research, Department of Neurosurgery and Radiology, College of Medicine, Pennsylvania State University, Hershey, Pennsylvania, USA.
Michael T LanaganDepartment of Engineering Science and Mechanics, Pennsylvania State University, State College, Pennsylvania, USA.
Wei ChenCenter for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, Minnesota, USA.ORCID 0000-0002-9608-1444

Funding

TRD4 - Ultrahigh Field Engineering and SafetyP41EB027061 · NIBIB · UNIVERSITY OF MINNESOTA · PI Gregory John Metzger, KAMIL UGURBIL · 2019 to 2026
$11.7M
Breaking Spatiotemporal Barriers of MR Imaging Technologies to Study Human Brain Function and NeuroenergeticsU01EB026978 · NIBIB · UNIVERSITY OF MINNESOTA · PI CHEN, WEI, ZHU, XIAO-HONG · 2018 to 2022
$6.4M
Development of Quantitative Deuterium MRS Imaging for Human Brain Tumor Application at Ultrahigh FieldR01CA240953 · NCI · UNIVERSITY OF MINNESOTA · PI CHEN, WEI, LIANG, ZHI-PEI · 2019 to 2025
$2.7M
Establishing translational neuroimaging tools for quantitative assessment of energy metabolism and metabolic reprogramming in healthy and diseased human brain at 7TR01NS133006 · NINDS · UNIVERSITY OF MINNESOTA · PI Wei Chen, XIAO-HONG ZHU · 2023 to 2026
$2.5M
Advancing MRI & MRS Technologies for Studying Human Brain Function and EnergeticsR24MH106049 · NIMH · UNIVERSITY OF MINNESOTA · PI CHEN, WEI, YANG, QING X · 2014 to 2016
$1.6M
NCI NIH HHS R01 CA240953NIBIB NIH HHS P41 EB027061NIBIB NIH HHS U01 EB026978NIMH NIH HHS R24 MH106049NINDS NIH HHS R01 NS133006
6 · The paper itself

Abstract

purposeTo optimize the design and demonstrate the integration of a helmet-shaped container filled with a high-permittivity material (HPM) slurry with RF head coil arrays to improve RF coil sensitivity and SNR for human-brain proton MRI.

methodsRF reception magnetic fields (

resultsSimulations showed that averaged

conclusionThe RF coil sensitivity and MRI SNR were largely improved with the two-piece HPM slurry helmet demonstrated by both electromagnetic simulations and in vivo human head experiments at 7 T. The findings demonstrate that incorporating an easily producible HPM slurry helmet into the RF coil array significantly enhances human-brain MRI SNR homogeneity and quality at ultrahigh field. Greater SNR improvement is anticipated using the less lossy HPM and optimal design.

Indexed as

BrainEquipment DesignMagnetic Resonance ImagingPhantoms, ImagingSignal-To-Noise RatioComputer SimulationHeadHead Protective DevicesHumansMagnetic FieldsRadio WavesHigh‐permittivity slurry helmethuman‐brain MRIRF coil sensitivityRF head array coilsignal‐to‐noiseultrahigh‐field MRI

Identifiers

PMID39449244
PMCPMC11680740

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.