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. 2020 Nov;10(11):2098–2111. doi: 10.21037/qims-20-607

Figure 2.

Figure 2

Bone scintigraphy (A) and transaxial PET (B) and fused PET/CT (C) from the early-phase scan and transaxial PET (D) and fused PET/CT (E) from the conventional scan in F-18 NaF PET/CT of a 72-year-old man with prostate cancer. Staging bone scintigraphy images show focally increased radiotracer uptake in the left scapula (arrow on A) with serum prostate-specific antigen level of 55.70 ng/mL. Bone-phase scan images show focal intensely increased radiotracer uptake in the left scapula (arrows on D and E); however, only mildly increased radiotracer uptake is observed on early-phase scan images (arrows on B and C) with a lesion-to-blood pool uptake ratio of 0.43. The lesion was clinically diagnosed as being a metastatic bone lesion. PET/CT, positron emission tomography/computed tomography.