Compliance Assessment of the Epithelial or Absorbed Power Density Below 10 GHz Using SAR Measurement Systems

Bioelectromagnetics · 2021 · Unclear · Insufficient evidence

← Research stream

UnclearInsufficient evidencePaper 1119

Study snapshot

PublicationBioelectromagnetics · 2021

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Compliance Assessment of the Epithelial or Absorbed Power Density Below 10 GHz Using SAR Measurement Systems Theodoros Samaras, Andreas Christ, Niels Kuster. Compliance Assessment of the Epithelial or Absorbed Power Density Below 10 GHz Using SAR Measurement Systems. Bioelectromagnetics. 2021 Jun 15. doi: 10.1002/bem.22355. Abstract The introduction of new dosimetric quantities, in particular, epithelial or absorbed power density for frequencies above 6 GHz, in exposure guidelines and safety standards requires the development of new experimental assessment procedures for compliance testing. In this study, we propose to approximate the peak spatial-average absorbed power density (psSab ) using the same measured data and algorithms that are used for determining the peak spatial-average specific absorption rate psSAR, which is currently limited to frequencies up to 10 GHz. The uncertainty component for the transformation of psSAR to psSab was evaluated as less than 0.55 dB (13.5%) for any source as close as 0.02λ from the tissue simulating media. The approach is easy to implement and allows determining compliance with the basic restrictions of the latest safety guidelines. In the next project, we will expand dosimetric probes, phantoms, and procedures for frequencies above 10 GHz. pubmed.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 typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureRF

Evidence strengthInsufficientConfidence: 78% · Peer reviewed: yes

Main findings

The study proposes approximating peak spatial-average absorbed power density (psSab) using the same measured data and algorithms used for peak spatial-average specific absorption rate (psSAR) measurements (noted as currently limited up to 10 GHz). The uncertainty component for transforming psSAR to psSab was evaluated as <0.55 dB (13.5%) for sources as close as 0.02λ from tissue simulating media, and the approach is described as easy to implement for compliance with latest safety guidelines.

Outcomes measured

Development of experimental compliance assessment procedure for peak spatial-average absorbed power density (psSab)
Uncertainty of transforming psSAR to psSab (<0.55 dB / 13.5%)
Applicability for compliance with exposure guidelines/basic restrictions

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": "RF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Development of experimental compliance assessment procedure for peak spatial-average absorbed power density (psSab)",
    "Uncertainty of transforming psSAR to psSab (<0.55 dB / 13.5%)",
    "Applicability for compliance with exposure guidelines/basic restrictions"
  ],
  "main_findings": "The study proposes approximating peak spatial-average absorbed power density (psSab) using the same measured data and algorithms used for peak spatial-average specific absorption rate (psSAR) measurements (noted as currently limited up to 10 GHz). The uncertainty component for transforming psSAR to psSab was evaluated as <0.55 dB (13.5%) for sources as close as 0.02λ from tissue simulating media, and the approach is described as easy to implement for compliance with latest safety guidelines.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "compliance assessment",
    "dosimetry",
    "epithelial power density",
    "absorbed power density",
    "psSab",
    "psSAR",
    "SAR measurement systems",
    "exposure guidelines",
    "safety standards",
    "tissue simulating media",
    "<10 GHz",
    "above 6 GHz"
  ],
  "suggested_hubs": []
}

AI can be wrong. Always verify against the paper.

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: 10.1002/bem.22355
PubMed: 34130354

Read the original paper →

Related papers

← Back to the Research Library