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SAR / Device Absorption

The effect of authentic metallic implants on the SAR distribution of the head exposed to 900, 1800 and 2450 MHz dipole near field.

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Virtanen H, Keshvari J, Lappalainen R. · 2007

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Some metallic head implants may notably increase peak SAR under rare exposure conditions at 900, 1800, and 2450 MHz.

Plain English Summary

Summary written for general audiences

Researchers examined the effect of authentic passive metallic implants in the head region. A half-wave dipole antenna was used as an exposure source and SAR in the near field was studied numerically at GSM (900 and 1800 MHz) and UMTS (2450 MHz) frequencies. Results indicate some implants under very rare exposure conditions may cause a notable enhancement in peak mass averaged SAR.

Why This Matters

The study aimed to model the presumably worst cases of the most common implants in an accurate MRI-based phantom. The implants studied included skull plates, fixtures, bone plates, and ear rings.

Exposure Information

Specific exposure levels were not quantified in this study. The study examined exposure from: 900, 1800 and 2450

Study Details

In this study, the effect of authentic passive metallic implants in the head region was examined.

A half-wave dipole antenna was used as an exposure source and the specific absorption rate (SAR, W k...

The results indicate that some of the implants, under very rare exposure conditions, may cause a not...

Cite This Study
Virtanen H, Keshvari J, Lappalainen R. (2007). The effect of authentic metallic implants on the SAR distribution of the head exposed to 900, 1800 and 2450 MHz dipole near field. Phys Med Biol. 52(5):1221-1236, 2007.
Show BibTeX
@article{h_2007_the_effect_of_authentic_2664,
  author = {Virtanen H and Keshvari J and Lappalainen R.},
  title = {The effect of authentic metallic implants on the SAR distribution of the head exposed to 900, 1800 and 2450 MHz dipole near field.},
  year = {2007},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/17301450/},
}
PubMed: 17301450

Cited By (56 papers)

View all 56 citing papers on Semantic Scholar

Quick Questions About This Study

The study examined the effect of authentic passive metallic implants in the head region.
The study used GSM frequencies at 900 and 1800 MHz and UMTS frequency at 2450 MHz.
The implants studied were skull plates, fixtures, bone plates, and ear rings.
Some implants under very rare exposure conditions may cause a notable enhancement in peak mass averaged SAR.
A half-wave dipole antenna was used as an exposure source and SAR in the near field was studied numerically.