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Table 2 Median (IQR) differences between SUVs of SPECT and PET for lesions in different size categories. The differences are normalized with respect to SPECT SUVs

From: Comparison of standardized uptake values between 99mTc-HDP SPECT/CT and 18F-NaF PET/CT in bone metastases of breast and prostate cancer

Size category n SUVmax SUVpeak SUVmean
0.55–1.21 cm3 58 41% (− 22–162%) 17% (− 20–87%) 30% (− 12–111%)
1.32–1.98 cm3 58 24% (− 24–89%) 11% (− 39–52%) 19% (− 34–63%)
1.98–3.97 cm3 58 17% (− 45–106%) 7% (− 45–76%) 17% (− 39–90%)
3.97–60.31 cm3 57 11% (− 29–83%) 6% (− 26–52%) 17% (−14–51%)