BJR -- Geijer et al. 78 (934): 906 Figure 2

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Figure 2. Sample images with an Alderson phantom. (a) C-arm unit, 31 cm field size. (b) Angiographic equipment, 31 cm field size. (c) C-arm unit, 17 cm field size. (d) Angiographic equipment, 17 cm field size.