Study type: Medical/biological study (experimental study)

Effects of W-CDMA 1950 MHz EMF emitted by mobile phones on regional cerebral blood flow in humans med./bio.

Published in: Bioelectromagnetics 2009; 30 (7): 536-544

Aim of study (acc. to author)

To investigate the effects of exposure to W-CDMA cellular phone on regional cerebral blood flow in humans.

Background/further details

Nine healthy volunteers underwent 12 scans (ten minutes break in between each scan). Additionally, before the experiment two scans were assessed as baseline. Half of the 12 scans were performed under exposure conditions and the other half under sham exposure conditions. The interval between the real exposure and sham exposure was at least one week in order to avoid any lasting effects. The fifth scan was assessed immediatly after the exposure/sham exposure and the sixth scan followed ten minutes after.



Exposure Parameters
Exposure 1: 1.95 GHz
Exposure duration: continuous for 30 min
  • power: 430 mW
  • SAR: 2.02 W/kg average over mass (10 g)
  • SAR: 4.4 W/kg peak value (brain)

Exposure 1

Main characteristics
Frequency 1.95 GHz
Exposure duration continuous for 30 min
Exposure setup
Exposure source
Distance between exposed object and exposure source 40 mm
Setup antenna covered by a 54 mm x 64 mm plastic box mounted to the right side of the subject's head
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
power 430 mW - - - -
SAR 2.02 W/kg average over mass calculated 10 g -
SAR 4.4 W/kg peak value calculated brain -

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

No significant changes in regional cerebral blood flow were found under exposure compared to sham exposure.
In this study, electromagnetic fields emitted by W-CDMA mobile phones did not affect the regional cerebral blood flow in humans during or after exposure.

Study character:

Study funded by

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