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Measurements from the phantom embedded with a 27.6 μM (0.01 mg/mL) GOS target under x-ray excitation at a scan depth of 6 mm. (a) Plot of measurements at each linear scan position for a typical angular projection. (b) Actual EMCCD camera images for positions 9 (left) where the target was not excited by the x-ray and for position 14 (right) where the x-ray beam passed through the target. Images are plotted with the same color bar.
