Dose reduction and government priorities.
D009864:Ontario; D011785:Quality Assurance, Health Care / Q000191:economics; D011786:Quality Control; D011829:Radiation Dosage; D011835:Radiation Protection / Q000592:standards; D011859:Radiography / Q000191:economics / Q000295:instrumentation / Q000592:standards*; D011871:Radiology / Q000592:standards