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Table 4 Comparison of 18F-FDG PET based and 18F-FAPI PET based TNM restaging

From: Head-to-head comparison of 18F-FAPI and 18F-FDG PET/CT in staging and therapeutic management of hepatocellular carcinoma

Patient No

TNM staging

(FDG PFT based)

TNM staging

(FAPI PFT based)

Additional finding

( 18F-FAPI PET)

Staging change

Primary lesion detected

1

T2N0M0

T3N0M0

Multifocal intrahepatic foci

Up

-

2

T2N0M1

T3N0M1

Multifocal intrahepatic foci

Up

-

4

T2N0M0

T2N0M0

-

None

Yes

6

T1N0M0

T1N0M0

-

None

Yes

7

T2N0M0

T3N0M0

Multifocal intrahepatic foci

Up

-

10

T1N0M0

T1N0M0

-

None

Yes

15

T3N0M0

T2N0M0

Multifocal intrahepatic foci

Up

-

16

T1N0M0

T1N0M0

-

None

Yes

18

T1N0M0

T1N0M0

-

None

Yes

19

T2N0M0

T3N0M0

Multifocal intrahepatic foci

Up

-

21

T2N0M0

T3N0M0

Multifocal intrahepatic foci

Up

-

23

T1N0M0

T1N0M0

-

None

Yes

25

T1N0M0

T1N0M0

-

None

Yes

26

T1N0M0

T1N0M0

-

None

Yes

27

T2N0M0

T2N0M0

-

None

Yes

28

T3N0M1

T2N0M1

Multifocal intrahepatic foci

Up

-

29

T2N0M0

T2N0M0

-

None

Yes

30

T3N0M0

T3N0M0

-

None

Yes

31

T1N0M0

T1N0M0

-

None

Yes

36

T2N0M1

T2N0M1

-

None

Yes

44

T2N0M1

T1N0M1

Multifocal intrahepatic foci

Up

-

51

T2N0M0

T1N0M0

Multifocal intrahepatic foci

Up

-

55

T2N0M0

T1N0M0

Multifocal intrahepatic foci

Up

-

56

T1N0M0

T1N0M0

-

None

Yes

60

T2N0M0

T1N0M0

Multifocal intrahepatic foci

Up

-

63

T1N0M0

T1N0M0

-

None

Yes

65

T3N0M0

T2N0M0

Multifocal intrahepatic foci

Up

-

66

T1N0M0

T1N0M0

-

None

Yes

  1. Bold fonts indicate the changing segment in TNM stanging after 18F-FAPI PET/CT imaging
  2. 18F Fluorine 18, FDG fluorodeoxyglucose, FAPI fibroblast activation protein inhibitor, PET positron emission tomography, TNM Tumor Node Metastasis