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Table 2 Metabolic characteristics of primary tumours (pr) and involved lymph nodes (no), FDG uptake, threshold used by the experts for metabolic tumour volume delineation and corresponding volume. New and Old refer to the generation of PET device

From: Delineation of lung cancer with FDG PET/CT during radiation therapy

 

SUVmax range

SUVmax Mean/Median

Thresholds range (%SUVmax)

Thresholds Mean/Median (%SUVmax)

Volumes range (cc)

Volumes Mean/Median (cc)

SOld(pr) (n = 32)

2.5–14.1

6.2/5.8

34–66

50/50

0.26–65

12/17

SOld(no) (n = 38)

2.4–8.4

4.6/4.6

46–73

60/59

0.26–13

3/2

SNew(pr) (n = 19)

2.5–36.5

10.5/8.0

16–65

43/44

0.47–140

20/10

SNew(no) (n = 22)

2.6–9.3

5.4/4.6

44–71

57/59

0.57–25

4.5/1.5