Magnetic resonance imaging methods for study of human brain function and their application at high magnetic field.

{
  "study_type": "review",
  "exposure": {
    "band": null,
    "source": "MRI (high magnetic field strength)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Humans",
  "sample_size": null,
  "outcomes": [
    "MRI signal intensity changes associated with neuronal activity",
    "Cerebral blood volume",
    "Cerebral blood flow",
    "Blood oxygenation"
  ],
  "main_findings": "The article overviews MRI sequences used to study human brain function by monitoring localized signal intensity changes accompanying neuronal activity, including sequences sensitized to cerebral blood volume, blood flow, and blood oxygenation. It notes that many such experiments benefit from implementation at higher magnetic field strength than conventional MRI and provides examples of use.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "MRI",
    "functional MRI",
    "brain function",
    "neuronal activity",
    "signal intensity",
    "cerebral blood volume",
    "cerebral blood flow",
    "blood oxygenation",
    "high magnetic field"
  ],
  "suggested_hubs": [
    {
      "slug": "mri-static-fields",
      "weight": 0.78,
      "reason": "Discusses MRI methods and benefits of higher magnetic field strength."
    }
  ]
}