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Stochastic Dosimetry for the Assessment of Children Exposure to Uniform 50 Hz Magnetic Field with Uncertain

2017 · No effect · Low evidence

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No effectLow evidencePaper 2184

Using stochastic dosimetry with 10,000 possible magnetic-field orientations, the induced electric fields in CNS and PNS tissues of children aged 5–14 years were within ICNIRP basic restrictions for the general public. No significant differences in exposure le…

Study snapshot

Publicationmanual · 2017
Study typeexposure_assessment
Reported directionNo effect
Evidence ratingLow

Abstract

Stochastic Dosimetry for the Assessment of Children Exposure to Uniform 50 Hz Magnetic Field with Uncertain Orientation Chiaramello E, Fiocchi S, Ravazzani P, Parazzini M. Stochastic Dosimetry for the Assessment of Children Exposure to Uniform 50 Hz Magnetic Field with Uncertain Orientation. Biomed Res Int. 2017;2017:4672124. doi: 10.1155/2017/4672124. Abstract This study focused on the evaluation of the exposure of children aging from five to fourteen years to 50 Hz homogenous magnetic field uncertain orientation using stochastic dosimetry. Surrogate models allowed assessing how the variation of the orientation of the magnetic field influenced the induced electric field in each tissue of the central nervous system (CNS) and in the peripheral nervous system (PNS) of children. Results showed that the electric field induced in CNS and PNS tissues of children were within the ICNIRP basic restrictions for general public and that no significant difference was found in the level of exposure of children of different ages when considering 10000 possible orientations of the magnetic field. A "mean stochastic model," useful to estimate the level of exposure in each tissue of a representative child in the range of age from five to fourteen years, was developed. In conclusion, this study was useful to deepen knowledge about the ELF-MF exposure, including the evaluation of variable and uncertain conditions, thus representing a step towards a more realistic characterization of the exposure to EMF. Open Access Paper: ncbi.nlm.nih.gov

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 typeexposure_assessment
Effect directionno_effect
PopulationChildren aged 5–14 years
Sample sizeNot supplied
ExposureELF · 0.05 MHz
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Using stochastic dosimetry with 10,000 possible magnetic-field orientations, the induced electric fields in CNS and PNS tissues of children aged 5–14 years were within ICNIRP basic restrictions for the general public. No significant differences in exposure level were found between children of different ages under the modeled orientation uncertainty.

Outcomes measured

  • Induced electric field in CNS tissues
  • Induced electric field in PNS tissues
  • Compliance with ICNIRP basic restrictions for general public
  • Effect of magnetic-field orientation uncertainty on induced electric field
  • Age-related differences in exposure (5–14 years)

Limitations

  • Exposure scenario was a uniform (homogenous) 50 Hz magnetic field with uncertain orientation (may not represent all real-world exposures)
  • Findings are based on surrogate models and stochastic dosimetry (model-based assessment rather than direct measurements)
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Children aged 5–14 years",
  "sample_size": null,
  "outcomes": [
    "Induced electric field in CNS tissues",
    "Induced electric field in PNS tissues",
    "Compliance with ICNIRP basic restrictions for general public",
    "Effect of magnetic-field orientation uncertainty on induced electric field",
    "Age-related differences in exposure (5–14 years)"
  ],
  "main_findings": "Using stochastic dosimetry with 10,000 possible magnetic-field orientations, the induced electric fields in CNS and PNS tissues of children aged 5–14 years were within ICNIRP basic restrictions for the general public. No significant differences in exposure level were found between children of different ages under the modeled orientation uncertainty.",
  "effect_direction": "no_effect",
  "limitations": [
    "Exposure scenario was a uniform (homogenous) 50 Hz magnetic field with uncertain orientation (may not represent all real-world exposures)",
    "Findings are based on surrogate models and stochastic dosimetry (model-based assessment rather than direct measurements)"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "stochastic dosimetry",
    "children",
    "50 Hz",
    "ELF magnetic field",
    "uncertain orientation",
    "induced electric field",
    "CNS",
    "PNS",
    "ICNIRP basic restrictions",
    "surrogate models"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.9,
      "reason": "Study explicitly evaluates induced fields against ICNIRP basic restrictions for the general public."
    }
  ]
}
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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: 10.1155/2017/4672124
PubMed: Not supplied

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