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EJNMMI Research

Table 2 Tumour characteristics

From: Optimal 2-[18F]fluoro-2-deoxy-d-galactose PET/CT protocol for detection of hepatocellular carcinoma

Patient ID

Tumour ID

Tumour volume (mL)

T/B ratio metabolic image

T/B ratio static; 1 h

T/B ratio static; 2 or 3 h

Tpeak/B ratio metabolic image

Tpeak/B ratio static; 1 h

Tpeak/B ratio static; 2 or 3 h

1

1A (cold)

8.6

0.44

0.51

0.49

–

–

–

2

2A (cold)

1548

0.56

0.52

0.55

–

–

–

2B (cold)

39

0.86

0.89

0.90

–

–

–

3

3A (hot)

10

1.42

1.49

1.38

2.72

2.39

2.43

4

4A (hot)

7.8

1.61

1.56

1.46

4.94

2.56

3.13

4B (hot)

0.92

1.69

1.76

1.93

3.84

3.21

3.74

5

5A (cold)

11

n.d.

0.69

0.73

–

–

–

6

6A (cold)

492

0.58

0.59

0.64

–

–

–

7

7A (cold)

21

0.60

0.82

0.86

–

–

–

8

8A (hot)

17

1.05

1.12

1.14

2.60

2.06

2.13

9

9A (hot)

0.43

0.97

1.19

1.10

1.59

1.48

1.30

9B (hot)

5.0

1.29

1.26

1.24

2.74

2.06

1.98

9C (hot)

13

1.39

1.33

1.31

4.73

3.38

3.36

9D (hot)

0.58

1.19

1.18

1.16

1.80

1.47

1.32

10

10A (cold)

311

0.66

0.61

0.57

–

–

–

Average

(cold)

 

0.62

0.66

0.68

–

–

–

Average

(hot)

 

1.33

1.36

1.34

3.12*

2.33

2.42

  1. T/B ratio: ratio between the average value in tumour to the average value in background liver tissue. Tpeak/B ratio: ratio between the average value of the five hottest voxels in tumour to the average value in background liver tissue. The late static scan was performed after 2 h in patients #1–4 and after 3 h in patients #5–10
  2. n.d. not determined because of major respiratory artefacts
  3. *P ≤ 0.05 when compared to Tpeak/B ratio static 1 h
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