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Brain & Nervous System

No effects of short‐term GSM mobile phone radiation on cerebral blood flow measured using positron emission tomography

No Effects Found

Kwon MS, Vorobyev V, Kännälä S, Laine M, Rinne JO, Toivonen T, Johansson J, Teräs M, Joutsa J, Tuominen L, Lindholm H, Alanko T, Hämäläinen H. · 2012

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The study found no evidence that short-term GSM mobile phone radiation affects cerebral blood flow.

Plain English Summary

Summary written for general audiences

Researchers investigated effects of 902.4 MHz GSM radiation on cerebral blood flow using PET with 15O-water tracer. Fifteen young healthy men were exposed to radiation at three head locations and sham exposure while performing a visual task. Exposure caused slight ear canal temperature rise but did not affect brain hemodynamics or task performance. Results showed no evidence of acute effects on cerebral blood flow.

Why This Matters

Whole-brain PET images were acquired 12 times with three scans per condition in counterbalanced order. Temperature was measured in the forehead, eyes, cheeks, and ear canals during exposure.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 902.4 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 902.4 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 902.4 MHz Duration: 5 minutes

Study Details

The present study investigated the effects of 902.4 MHz Global System for Mobile Communications (GSM) mobile phone radiation on cerebral blood flow using positron emission tomography (PET) with the 15O‐water tracer.

Fifteen young, healthy, right‐handed male subjects were exposed to phone radiation from three diffe...

The exposure induced a slight temperature rise in the ear canals but did not affect brain hemodynami...

The results provided no evidence for acute effects of short‐term mobile phone radiation on cerebral blood flow.

Cite This Study
Kwon MS, Vorobyev V, Kännälä S, Laine M, Rinne JO, Toivonen T, Johansson J, Teräs M, Joutsa J, Tuominen L, Lindholm H, Alanko T, Hämäläinen H. (2012). No effects of short‐term GSM mobile phone radiation on cerebral blood flow measured using positron emission tomography Bioelectromagnetics. 33(3):247-256, 2012.
Show BibTeX
@article{ms_2012_no_effects_of_shortterm_2779,
  author = {Kwon MS and Vorobyev V and Kännälä S and Laine M and Rinne JO and Toivonen T and Johansson J and Teräs M and Joutsa J and Tuominen L and Lindholm H and Alanko T and Hämäläinen H.},
  title = {No effects of short‐term GSM mobile phone radiation on cerebral blood flow measured using positron emission tomography},
  year = {2012},
  doi = {10.1002/bem.20702},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20702},
}
DOI: 10.1002/bem.20702

Cited By (14 papers)

Quick Questions About This Study

The study investigated effects of 902.4 MHz GSM mobile phone radiation on cerebral blood flow using PET with 15O-water tracer.
Fifteen young healthy men were exposed to phone radiation at left ear, right ear, and forehead locations plus sham exposure.
Exposure did not affect brain hemodynamics or task performance.
Exposure induced a slight temperature rise in the ear canals.
Subjects were exposed for 5 minutes per scan with 12 total PET scans acquired.