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SAR / Device Absorption

RF dosimetry: a comparison between power absorption of female and male numerical models from 0.1 to 4 ghz.

No Effects Found

Sandrini L, Vaccari A, Malacarne C, Cristoforetti L, Pontalti R · 2004

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The female model showed higher whole-body-averaged SAR than the male model, but peak 1 g and 10 g SAR did not differ by gender.

Plain English Summary

Summary written for general audiences

Researchers created a female dielectric anatomical model and compared power absorption in male and female models from 0.1 to 4 GHz. Whole-body-averaged SAR was higher in the female model, mainly due to a thicker subcutaneous fat layer. Maximum 1 g and 10 g averaged SAR did not depend on gender because it occurs in regions without subcutaneous fat.

Why This Matters

The female model was built using magnetic resonance imaging and a technique that avoids discrete tissue segmentation. Simulations used the FDTD method with a novel filtering-based subgridding algorithm applied to dosimetry for the first time, allowing mesh refinement by a factor of up to 7.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 4 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 4 GHzPower lines50/60 HzCell phones~1 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 0.1 to 4 GHz

Study Details

Realistic numerical models of human subjects and their surrounding environment represent the basic points of radiofrequency (RF) electromagnetic dosimetry. This also involves differentiating the human models in men and women, possibly with different body shapes and postures. In this context, the aims of this paper are, firstly, to propose a female dielectric anatomical model (fDAM) and, secondly, to compare the power absorption distributions of a male and a female model from 0.1 to 4 GHz.

For realizing the fDAM, a magnetic resonance imaging tomographer to acquire images and a recent tech...

The results show that the whole-body-averaged specific absorption rate (WBA-SAR) of the female mode...

Cite This Study
Sandrini L, Vaccari A, Malacarne C, Cristoforetti L, Pontalti R (2004). RF dosimetry: a comparison between power absorption of female and male numerical models from 0.1 to 4 ghz. Phys Med Biol. 49(22):5185-5201, 2004.
Show BibTeX
@article{l_2004_rf_dosimetry_a_comparison_3359,
  author = {Sandrini L and Vaccari A and Malacarne C and Cristoforetti L and Pontalti R},
  title = {RF dosimetry: a comparison between power absorption of female and male numerical models from 0.1 to 4 ghz.},
  year = {2004},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/15609567/},
}
PubMed: 15609567

Cited By (45 papers)

Quick Questions About This Study

The female model had higher whole-body-averaged SAR than the male model, mainly because of a thicker subcutaneous fat layer.
Maximum 1 g and 10 g averaged SAR did not depend on gender because it occurs in regions where no subcutaneous fat layer is present.
The model was created using magnetic resonance imaging and a technique that avoids discrete segmentation of body tissues into different types.
Simulations used the FDTD method with a novel filtering-based subgridding algorithm applied to dosimetry for the first time, allowing abrupt mesh refinement by a factor of up to 7.
Power absorption distributions were compared from 0.1 to 4 GHz.