title: Monitoring the effects of mobile phone use on the brain by proton magnetic resonance spectroscopy.
abstract: OBJECTIVE
  To determine whether extensive use of mobile phones affects brain metabolites detectable by proton magnetic resonance spectroscopy (1H MRS).
  
  
  METHODS
  Twenty-one extensive mobile phone users (average use = 5.5 +/- 2.2 years at 2.4 +/- 1.1 hours/day) and 15 control subjects were recruited and submitted to a 1H MRS brain examination at 1.5 Tesla. Data were recorded in the most exposed right temporal and pontobulbar areas as well as in the contralateral left temporal area. The ratios of N-acetylaspartate (NAA), choline (Cho) and myo-inositol (mI) to creatine/phosphocreatine (Cr) were measured.
  
  
  RESULTS
  No statistically significant changes in the NAA/Cr, Cho/Cr and mI/Cr ratios were measured between mobile phone users and control subjects and between the exposed and contralateral temporal areas.
  
  
  CONCLUSIONS
  These results indicate that extensive exposition to mobile phone radiation does not cause MRS-detectable brain metabolic changes.
authors.affiliation: Département de Radiologie, Hôpital Saint-Luc du CHUM, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: A
authors.initials: A
authors.lastname: Khiat
authors.forename: Y
authors.initials: Y
authors.lastname: Boulanger
authors.forename: G
authors.initials: G
authors.lastname: Breton
mesh_terms: D000328:Adult; D001822:Body Burden; D001921:Brain / Q000378:metabolism* / Q000528:radiation effects*; D040421:Cell Phone; D005260:Female; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008297:Male; D008872:Microwaves; D018377:Neurotransmitter Agents / Q000032:analysis*; D011522:Protons; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D012062:Relative Biological Effectiveness
chemical_list: D018377:Neurotransmitter Agents; D011522:Protons