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Contrast phantom. (A) Photo of the phantom. (B) Coronal positron emission tomography (PET) image slice (maximum a posteriori reconstruction) through the phantom loaded with 124I (90 kBq/mL) showing a profile window positioned over the part including the nonradioactive, water-filled insert. Scan duration was 30 minutes. Phantom dimensions (height × diameter in mm): outer vial 60 × 26, inner vial 30 × 7.
