Imaging more wiselyalready at work [letter reply]. Raja This study has several strengths, including its large size, inclusion of imaging data from 7 US sites and from Ontario, inclusion of all age groups, and accurate assessment of utilization, including examinations conducted outside health care plans with reimbursement claims. Magnetic resonance imaging increased from 62 to 139 per 1000 person-years in the United States (relative rate, 2.3; 95% CI, 2.0-2.6) and from 13 to 89 per 1000 person-years in Ontario (relative rate, 6.7; 95% CI, 5.7-7.8), and ultrasound increased from 324 to 495 per 1000 person-years in the United States (relative rate, 1.5; 95% CI, 1.4-1.7) and from 332 to 580 per 1000 person-years in Ontario (relative rate, 1.7; 95% CI, 1.7-1.8). Annual percentage changes and 95% confidence intervals were estimated assuming that the rates change at a constant percentage every year on a log scale. Papanicolas endobj CG, Coy The differences increased over time for CT and diminished over time for MRI. 9 0 obj et al. In addition, he said, this effect isn't seen equally among the various FDA-approved. Pub L No. Currently, you are using a shared account. Overview and forecasts on trending topics, Industry and market insights and forecasts, Key figures and rankings about companies and products, Consumer and brand insights and preferences in various industries, Detailed information about political and social topics, All key figures about countries and regions, Market forecast and expert KPIs for 600+ segments in 150+ countries, Insights on consumer attitudes and behavior worldwide, Business information on 70m+ public and private companies, Detailed information for 35,000+ online stores and marketplaces. Chart. Retrospective cohort study of patterns of medical imaging between 2000 and 2016 among 16 million to 21 million patients enrolled annually in 7 US integrated and mixed-model insurance health care systems and for individuals receiving care in Ontario, Canada. RK, Brenner Unfortunately, the magnets in an MRI scanner are solely to help create a clear image and dont possess any healing properties. Nonetheless, even among adults aged 65 years or older, the results presented show ongoing annual growth in CT and MRI use of 2.2% to 4.9% in the US sites and Ontario. A, Quan All analyses were stratified by country, imaging modality, and age group (<18 years [children]; 18-64 years [adults]; and 65 years [older adults]) and account for follow-up time for individuals born or dying that year. 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