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ALROC results for spheres at radial positions of (A) 7 cm and (B) 13 cm, shown as a function of activity concentration for scanners with varying crystal width and without DOI or 2-level DOI information. Results are shown for scanners using 20 mm LYSO crystals, 600ps timing resolution, and a scanner AFOV of 72 cm. The total scan time is equivalent to 10 minutes for imaging a 100 cm long patient or object.
