title: Radiation exposure to sonographers from fluorine-18-FDG PET patients.
abstract: OBJECTIVE
  We estimated the amount of radiation exposure to sonographers from patients who were injected with 18F-fluorodeoxyglucose (FDG) at 2 and 3 h postinjection.
  
  
  METHODS
  We studied 8 patients who were given between 380-420 MBq 18F-FDG. The patients were measured with a RADOS RDS-120 dosimeter between 2 and 3 h after FDG injection. The dosimetry measurement was taken at a distance of 0.5 m from the injected patient, a distance used by a sonographer to perform an abdominal ultrasound. Measurements were taken at the levels of the sonographer's shoulder, abdomen, and gonads.
  
  
  RESULTS
  At the first measurement at 2 h, the mean exposures to the shoulder, abdomen, and gonads of the sonographer in pSv/h were 31.9+/-11.3, 37.1+/-9.5, and 32.8+/-11.8, respectively. At 3 h, the mean exposures to the shoulder, abdomen, and gonads were 21.5+/-4.2, 20.2+/-5.8, and 19.6+/-4.9, respectively.
  
  
  CONCLUSIONS
  The amount of radiation exposure to a sonographer is minimal. Radiation exposure risks should be considered, however, if the sonographer comes into daily, repeated contact with patients who have been given 18F-FDG.
authors.affiliation: University Hospital Zurich, Switzerland. merrill.griff@dmr.usz.ch
authors.forename: M
authors.initials: M
authors.lastname: Griff
authors.forename: T
authors.initials: T
authors.lastname: Berthold
authors.forename: A
authors.initials: A
authors.lastname: Buck
mesh_terms: D000005:Abdomen / Q000528:radiation effects; D000328:Adult; D001417:Background Radiation; D019788:Fluorodeoxyglucose F18 / Q000008:administration & dosage; D006066:Gonads / Q000528:radiation effects; D006801:Humans; D016273:Occupational Exposure; D011829:Radiation Dosage; D019275:Radiopharmaceuticals / Q000008:administration & dosage; D012307:Risk Factors; D012782:Shoulder / Q000528:radiation effects; D013997:Time Factors; D014055:Tomography, Emission-Computed; D014463:Ultrasonography
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18