FIGURE 2. Transaxial ¹⁸F-fluoride ion PET image of lumbar vertebra in Figure 1 obtained after intravenous injection of 10.3 MBq/kg body weight of ¹⁸F-fluoride ion (image frame summation between 90 and 120 min). Oval ROI (ROI size, 1.1 cm²) is defined in center of vertebral body (image scale, 0–231 kBq/cm³).

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