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Table 3 Variability of the ratios LBR, SURtc/TLR, and SURtc/TLRtc

From: An investigation of the relation between tumor-to-liver ratio (TLR) and tumor-to-blood standard uptake ratio (SUR) in oncological FDG PET

 

LBR

SURtc/TLR

SURtc/TLRtc

Group

Mean ± SD

90 % CI

Mean ± SD

90 % CI

Mean ± SD

90 % CI

All

1.47 ± 0.18

1.2–1.78

1.14 ± 0.21

0.82–1.48

1.38 ± 0.17

1.12–1.65

Site

      

Site A

1.45 ± 0.19

1.18–1.78

1.14 ± 0.22

0.82–1.55

1.37 ± 0.18

1.11–1.66

Site B

1.5 ± 0.18

1.23–1.79

1.15 ± 0.18

0.84–1.43

1.4 ± 0.16

1.15–1.64

Tumor entity

      

HNC

1.44 ± 0.15

1.2–1.66

1.16 ± 0.21

0.85–1.49

1.36 ± 0.14

1.12–1.61

NSCLC

1.49 ± 0.18

1.23–1.8

1.14 ± 0.18

0.82–1.43

1.39 ± 0.16

1.14–1.64

EC

1.45 ± 0.19

1.18–1.78

1.15 ± 0.23

0.81–1.57

1.37 ± 0.19

1.09–1.66

Tumor size

      

Volume <10 ml

1.48 ± 0.19

1.18–1.78

1.16 ± 0.23

0.8–1.58

1.4 ± 0.19

1.12–1.66

Volume ≥ 10 ml

1.46 ± 0.18

1.2–1.78

1.13 ± 0.19

0.83–1.42

1.36 ± 0.16

1.13–1.62