title: The effects of exposure to 915 MHz radiofrequency identification on cerebral glucose metabolism in rat: a [F-18] FDG micro-PET study.
abstract: OBJECTIVE
  We investigated the effect of whole-body exposure to 915-MHz radiofrequency identification (RFID) on rat cortical glucose metabolism by using (18)F-deoxyglucose positron emission tomography (FDG-PET).
  
  
  METHODS
  Male Sprague-Dawley rats were divided into three groups: Cage-control, sham-exposed and RFID-exposed groups. Rats were exposed to the 915-MHz RFID for 8 h daily, 5 days per week, for 2 or 16 weeks. The whole-body average specific absorption rate (SAR) was 4 W/kg for the field of the 915 MHz RFID signal. FDG-PET images were obtained the day after RFID exposure, using micro-PET with a FDG tracer. With a Xeleris functional imaging workstation, absolute values in regions of interest (ROI) in the frontal, temporal and parietal cortexes and cerebellum were measured. Cortical ROI values were normalized to the cerebellar value and compared.
  
  
  RESULTS
  The data showed that the relative cerebral glucose metabolic rate was unchanged in the frontal, temporal and parietal cortexes of the 915 MHz RFID-exposed rats, compared with rats in cage-control and sham-exposed groups.
  
  
  CONCLUSIONS
  Our results suggest that 915 MHz RFID radiation exposure did not cause a significant long lasting effect on glucose metabolism in the rat brain.
authors.affiliation: Department of Neurosurgery, Ajou University School of Medicine, Suwon, South Korea.
authors.forename: Hye Sun
authors.initials: HS
authors.lastname: Kim
authors.forename: Young-Sil
authors.initials: YS
authors.lastname: An
authors.forename: Man-Jeong
authors.initials: MJ
authors.lastname: Paik
authors.forename: Yun-Sil
authors.initials: YS
authors.lastname: Lee
authors.forename: Hyung Do
authors.initials: HD
authors.lastname: Choi
authors.forename: Byung Chan
authors.initials: BC
authors.lastname: Kim
authors.forename: Jeong-Ki
authors.initials: JK
authors.lastname: Pack
authors.forename: Nam
authors.initials: N
authors.lastname: Kim
authors.forename: Young Hwan
authors.initials: YH
authors.lastname: Ahn
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism / Q000528:radiation effects*; D019788:Fluorodeoxyglucose F18; D005947:Glucose / Q000378:metabolism*; D008297:Male; D049268:Positron-Emission Tomography / Q000379:methods*; D057233:Radio Frequency Identification Device; D019275:Radiopharmaceuticals; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18; D005947:Glucose