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EJNMMI Research

Table 3 Comparison of SUVmax and TBR between the early and delayed images

From: The image quality and feasibility of solitary delayed [68 Ga]Ga-PSMA-11 PET/CT using long field-of-view scanning in patients with prostate cancer

Type & site

No. of lesions

SUVmax

TBR

  

Early

Delayed

p

Change (%)

Early

Delayed

p

Change (%)

Primary

49*

13.4 (3.5 ~ 89.6)

21.8

(2.8 ~ 153.0)

 < 0.001

48.2

(− 20.0 ~ 134.2)

3.2 (1.1 ~ 26.1)

6.9 (1.5 ~ 52.9)

 < 0.001

85.5 (34.8 ~ 198.7)

Local recurrence

5*

13.5

(10.9 ~ 22.4)

24.1

(16.5 ~ 35.3)

0.0625

69.8

(52.0 ~ 116.3)

3.3 (2.1 ~ 4.7)

6.7 (3.1 ~ 8.7)

0.0625

96.7 (51.7 ~ 153.7)

LNM

98

5.9 (2.0 ~ 124.3)

10.0

(2.3 ~ 193.6)

 < 0.001

66.5

(− 24.0 ~ 249.0)

1.4 (0.3 ~ 30.7)

2.8 (0.5 ~ 62.2)

 < 0.001

108.4 (− 7.0 ~ 304.2)

Bone

63

5.7 (2.1 ~ 82.6)

7.9

(3.0 ~ 122.2)

 < 0.001

41.5

(− 57.0 ~ 230.9)

1.4 (0.6 ~ 22.6)

2.8 (0.6 ~ 37.8)

 < 0.001

91.2 (− 42.0 ~ 278.2)

Solid organ

3

5.1 (4.4 ~ 18.0)

5.0

(4.6 ~ 29.8)

0.500

15.6

(− 9.8 ~ 65.5)

1.6 (1.2 ~ 4.4)

2.5 (1.6 ~ 9.8)

0.250

52.0 (34.4 ~ 124.5)

  1. Data are presented as median (range)
  2. SUVmax = maximum standard uptake value, TBR = target-to-background ratio
  3. *The total number of primary prostate lesions and local recurrence lesions was 52 and 10, respectively, whereas three primary and five local recurrence lesions could not detect SUVmax value and TBR in early images owing to the urinary bladder interference
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