title: No effects of short-term GSM mobile phone radiation on cerebral blood flow measured using positron emission tomography.
abstract: 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 (15) O-water tracer. Fifteen young, healthy, right-handed male subjects were exposed to phone radiation from three different locations (left ear, right ear, forehead) and to sham exposure to test for possible exposure effects on brain regions close to the exposure source. Whole-brain [¹⁵O]H₂O-PET images were acquired 12 times, 3 for each condition, in a counterbalanced order. Subjects were exposed for 5 min in each scan while performing a simple visual vigilance task. Temperature was also measured in the head region (forehead, eyes, cheeks, ear canals) during exposure. The exposure induced a slight temperature rise in the ear canals but did not affect brain hemodynamics and task performance. The results provided no evidence for acute effects of short-term mobile phone radiation on cerebral blood flow.
authors.affiliation: Department of Psychology, Centre for Cognitive Neuroscience, University of Turku, Finland. mskwon@utu.fi
authors.forename: Myoung Soo
authors.initials: MS
authors.lastname: Kwon
authors.forename: Victor
authors.initials: V
authors.lastname: Vorobyev
authors.forename: Sami
authors.initials: S
authors.lastname: Kännälä
authors.forename: Matti
authors.initials: M
authors.lastname: Laine
authors.forename: Juha O
authors.initials: JO
authors.lastname: Rinne
authors.forename: Tommi
authors.initials: T
authors.lastname: Toivonen
authors.forename: Jarkko
authors.initials: J
authors.lastname: Johansson
authors.forename: Mika
authors.initials: M
authors.lastname: Teräs
authors.forename: Juho
authors.initials: J
authors.lastname: Joutsa
authors.forename: Lauri
authors.initials: L
authors.lastname: Tuominen
authors.forename: Harri
authors.initials: H
authors.lastname: Lindholm
authors.forename: Tommi
authors.initials: T
authors.lastname: Alanko
authors.forename: Heikki
authors.initials: H
authors.lastname: Hämäläinen
mesh_terms: D000328:Adult; D001288:Attention / Q000528:radiation effects; D040421:Cell Phone; D002560:Cerebrovascular Circulation / Q000528:radiation effects*; D006801:Humans; D008297:Male; D010104:Oxygen Radioisotopes; D049268:Positron-Emission Tomography
chemical_list: D010104:Oxygen Radioisotopes