TABLE 4

Interpretation Criteria for WBC Scintigraphy and 18F-FDG PET/CT

DiagnosisWBC scintigraphy18F-FDG PET/CT
Negative for infectionT/B ratio ≤ 2.0 after 20 hSUVmax < 2.0 after 1 and 2 h
T/B ratios stable or decreasing over time
OsteomyelitisT/B ratio > 2.0 after 20 hSUVmax > 2.0 after 1 and 2 h
T/B ratios increasing over timeSUVmax increasing over time
Soft-tissue infectionT/B ratio > 2.0 after 20 hSUVmax > 2.0 after 1 and 2 h
T/B ratios stable or decreasing over timeSUVmax stable or decreasing over time