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Table 2 TTP (units: min p.i.), Slope15–40 (units: SUV/h), TBR (units: 1), and BTV20–40 (units: mL) from VOI-based analysis and voxel-wise PVH (units: %) separated according to histologic grading

From: Voxel-wise analysis of dynamic 18F-FET PET: a novel approach for non-invasive glioma characterisation

Tumour VOI, post-filtering

Parameter

WHO II (55)

WHO III (62)

WHO IV (45)

H test P; r

Post hoc

90% isocontour

TTP

25 ± 8

19 ± 9

17 ± 8

< 0.001; 0.39

Slope15–40

− 0.0 ± 0.9

− 0.9 ± 1.6

− 1.0 ± 1.2

< 0.001; 0.36

TBR20–40 > 1.6

TBR5–15,max

2.9 ± 1.1

3.9 ± 1.6

4.6 ± 1.2

< 0.001; 0.50

#

TBR5–15,mean

1.8 ± 0.3

2.2 ± 0.5

2.4 ± 0.4

< 0.001; 0.53

TBR20–40,max

2.8 ± 0.9

3.4 ± 1.3

4.0 ± 1.0

< 0.001; 0.43

°#

TBR20–40,mean

1.9 ± 0.2

2.1 ± 0.4

2.2 ± 0.3

< 0.001; 0.43

#

BTV20–40

15 ± 16

26 ± 30

36 ± 25

< 0.001; 0.38

°#

PVHTBR,5–15 > 2

25 ± 24

53 ± 27

64 ± 18

< 0.001; 0.55

PVHTBR,20–40 > 2

26 ± 21

37 ± 24

51 ± 17

< 0.001; 0.43

#

PVHTTP > 30

50 ± 23

32 ± 23

25 ± 15

< 0.001; 0.43

PVHTTP < 15

11 ± 14

26 ± 25

31 ± 15

< 0.001; 0.47

PVHTTP < 20

23 ± 20

45 ± 29

52 ± 18

< 0.001; 0.49

PVHSlope < 0

25 ± 19

46 ± 27

50 ± 17

< 0.001; 0.47

TBR20–40 > 1.6, 10 mm Gauss

PVHGaussTTP > 30

67 ± 28

41 ± 34

32 ± 23

< 0.001; 0.44

PVHGauss TTP < 20

13 ± 20

39 ± 34

44 ± 24

< 0.001; 0.51

PVHGauss,Slope < 0

16 ± 23

45 ± 36

51 ± 26

< 0.001; 0.50

  1. Post hoc P < 0.05: WHO grade * II vs. III, ° II vs. IV, # III vs. IV