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. 2018 Oct 21;92(1094):20180290. doi: 10.1259/bjr.20180290

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© 2019 The Authors. Published by the British Institute of Radiology

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Figure 7. — Domestic and international diagnostic reference levels comparisons.^12–14 This study was based on standard-sized (50–60 kg) patients. The ACR DIR¹³ are based on the size bin containing median-sized patients. (head: median lateral thickness was 15 cm; other: the water-equivalent diameter median diameter was 31 cm) American College of Radiology-the American Association of Physicists in Medicine (AAPM)¹⁴: patient lateral dimensions are for average patients of the specified age. UK¹²: no condition specified patient size. AAPM, AmericanAssociation of Physicists in Medicine; ACR, American College of Radiology; DIR, dose index registry.