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[Conclusion: probable and possible futures. MRI with ultra high magnetic field].

Bulletin de l'Academie nationale de medecine · 2009 · No effect · Insufficient evidence

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No effectInsufficient evidencePaper 3371

The abstract states that MR neuroimaging does not interfere with brain function and is safe for use in patients and healthy volunteers. It discusses anticipated improvements in spatiotemporal resolution with higher-field MRI systems (e.g., 7T, 11.7T) and desc…

Study snapshot

PublicationBulletin de l'Academie nationale de medecine · 2009
Study typereview
Reported directionNo effect
Evidence ratingInsufficient

Abstract

MR neuroimaging does not interfere with brain function. Because it is safe, it can be used to study the brains of both patients and healthy volunteers. The tasks performed by neurons depend largely on their precise location, and high-field magnets have the potential to provide a 5- to 10-fold increase in spatiotemporal resolution. This should allow brain function to be studied on a scale of only a few thousand neurons, possibly at the intermediate scale of the "neural code". NeuroSpin, a new CEA research center, is dedicated to neuro-MRI at high magnetic field stengths. As a forum for dialogue between those developing and those using these instruments, it brings together researchers and engineers, technicians and medical doctors. NeuroSpin is one of the few institutions in Europe, if not the world, where these experts can come together in one place to design, construct and use machines equipped with ultrastrong magnets. The strongest "routine" MR device currently operates at 3 Tesla (60 000 times the earth's magnetic field), whereas a first French system operating at 7 Tesla (140 000 times the earth's field) is now available for human studies, and another system operating at 11.7 Tesla (world record) should be delivered in 2011. Preclinical studies are also being conducted with magnets operating at 7 Tesla and, soon, 17.6 Tesla.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typereview
Effect directionno_effect
PopulationPatients and healthy volunteers (mentioned generally)
Sample sizeNot supplied
ExposureELF
Evidence strengthInsufficientConfidence: 66% · Peer reviewed: yes

Main findings

The abstract states that MR neuroimaging does not interfere with brain function and is safe for use in patients and healthy volunteers. It discusses anticipated improvements in spatiotemporal resolution with higher-field MRI systems (e.g., 7T, 11.7T) and describes NeuroSpin's high-field MRI capabilities.

Outcomes measured

  • Brain function interference/safety of MR neuroimaging
  • Spatiotemporal resolution of neuroimaging at high magnetic field strengths

Limitations

  • No study design details or empirical data are provided in the abstract
  • No sample size, exposure metrics (e.g., SAR), or outcome measurement methods are described
  • Appears to be a narrative/forward-looking discussion rather than a controlled study
View raw extracted JSON
{
  "study_type": "review",
  "exposure": {
    "band": "ELF",
    "source": "MRI",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Patients and healthy volunteers (mentioned generally)",
  "sample_size": null,
  "outcomes": [
    "Brain function interference/safety of MR neuroimaging",
    "Spatiotemporal resolution of neuroimaging at high magnetic field strengths"
  ],
  "main_findings": "The abstract states that MR neuroimaging does not interfere with brain function and is safe for use in patients and healthy volunteers. It discusses anticipated improvements in spatiotemporal resolution with higher-field MRI systems (e.g., 7T, 11.7T) and describes NeuroSpin's high-field MRI capabilities.",
  "effect_direction": "no_effect",
  "limitations": [
    "No study design details or empirical data are provided in the abstract",
    "No sample size, exposure metrics (e.g., SAR), or outcome measurement methods are described",
    "Appears to be a narrative/forward-looking discussion rather than a controlled study"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "MRI",
    "ultra-high field",
    "high magnetic field",
    "Tesla",
    "NeuroSpin",
    "safety",
    "brain function",
    "neuroimaging"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.2,
      "reason": "General safety statement about high-field MRI exposure; no specific guideline body is mentioned."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 20120279

Read the original paper →

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