title: Perception of radiation exposure and risk among patients, medical students, and referring physicians at a tertiary care community hospital.
abstract: BACKGROUND
  It is important for physicians to be aware of the radiation doses as well as the risks associated with diagnostic imaging procedures that they are ordering.
  
  
  METHODS
  A survey was administered to patients, medical students, and referring physicians from a number of specialties to determine background knowledge regarding radiation exposure and risk associated with commonly ordered medical imaging tests.
  
  
  RESULTS
  A total of 127 patients, 32 referring physicians, and 30 medical students completed the survey. The majority of patients (92%) were not informed of the radiation risks associated with tests that they were scheduled to receive and had false perceptions about the use of radiation and its associated risks. Physicians and medical students had misconceptions about the use of ionizing radiation in a number of radiologic examinations; for example, 25% and 43% of physicians and medical students, respectively, were unaware that interventional procedures used ionizing radiation, and 28% of physicians were unaware that mammography used ionizing radiation. Computed tomographies and barium studies were thought to be associated with the least ionizing radiation among physicians.
  
  
  CONCLUSIONS
  There is a need for educating the public, medical students, and referring physicians about radiation exposure and associated risk so that (1) patients receiving multiple medical imaging tests are aware of the radiation that they are receiving and (2) physicians and future physicians will make informed decisions when ordering such tests to limit the amount of radiation that patients receive and to promote informed consent among patients.
authors.affiliation: Radiology Residency Training Program, University of Western Ontario, London, Ontario, Canada.
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Ricketts
authors.forename: Mark O
authors.initials: MO
authors.lastname: Baerlocher
authors.forename: Murray R
authors.initials: MR
authors.lastname: Asch
authors.forename: Andy
authors.initials: A
authors.lastname: Myers
mesh_terms: D001291:Attitude of Health Personnel; D002170:Canada; D002983:Clinical Competence / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D003952:Diagnostic Imaging / Q000009:adverse effects*; D005260:Female; D019538:Health Care Surveys / Q000379:methods / Q000706:statistics & numerical data; D007722:Health Knowledge, Attitudes, Practice; D006764:Hospitals, Community / Q000379:methods; D006801:Humans; D008297:Male; D061214:Patient Safety / Q000706:statistics & numerical data; D010564:Personnel, Hospital / Q000706:statistics & numerical data; D010820:Physicians / Q000706:statistics & numerical data*; D011829:Radiation Dosage; D011832:Radiation Injuries; D012017:Referral and Consultation; D018570:Risk Assessment / Q000379:methods / Q000706:statistics & numerical data; D013337:Students, Medical / Q000706:statistics & numerical data*; D063128:Tertiary Health Care / Q000379:methods