Article Figures & Data
Figures
- FIGURE 1.
Mean ± SD SUVmean and SULmean of liver and blood pool in patients with normal BMI and obese patients. BP = blood pool; NL = normal BMI.
- FIGURE 2.
Mean ± SD SUVmax and SULmax of liver and blood pool in patients with normal BMI and obese patients. BP = blood pool; NL = normal BMI.
- FIGURE 3.
Mean ± SD SUV–SUL differences (mean and maximum) in liver and blood pool in patients with normal BMI and obese patients.
- FIGURE 4.
Scatterplots of weight and SUV–SUL differences.
- FIGURE 5.
Principle of patient who, at different times, had same body weight but different LBMs and was injected with same 18F-FDG activity per body weight. In A, patient has more fat; in B, patient has more muscle. LBM activity (injected dose/LBM) is higher in A than in B, but target-area activity (kBq/mL) is also higher in A (because of smaller LBM volume in A and more available activity for target area). LBM activity is lower in B than in A, but target-area activity is also lower in B (because of higher volume of LBM and competitive reduction in target-area uptake caused by uptake in muscle). Both sides of SUL equation are higher in A and lower in B; as a result, SULs of target in A and B do not significantly differ. I/D = injected dose.
Tables
Area LBM ∼ 50 kg (n = 10) LBM ∼ 60 kg (n = 10) P* Liver SULmax 2.84 ± 0.406 2.92 ± 0.464 0.686 Liver SULmean 2.32 ± 0.278 2.26 ± 0.360 0.681 Blood-pool SULmax 2.03 ± 0.275 2.14 ± 0.381 0.468 Blood-pool SULmean 1.72 ± 0.249 1.80 ± 0.306 0.529 ↵* Based on 2-sample t test, because groups showed normality on Shapiro–Wilk test.
Data are mean ± SD.
