Table 4.

Comparison of MR, ¹⁸F-FDG, and ⁶⁸Ga-FAPI-04 PET/CT-based tumor staging (n = 28).

ParticipantNo.	Tumor Stage(FDG-based)	Tumor Stage(FAPI-based)	Tumor Stage(MR-based)	Additional finding(FDG vs FAPI)	Additional finding(FAPI vs FDG)	Staging changes (FAPI vs FDG)
1	III: T1N2M0	I: T1N0M0	I: T1N0M0	None	None	Down
2	III:T3N2M0	IVA: T4N2M0	IVA: T4N2M0	Cervical lymph node	Intracranial involvement	Up
3	IVB: T2N3M1	IVB: T2N3M1	IVA: T2N3M0	Cervical lymph node	None	None
4	IVB: T3N3M1	IVB: T2N2M1	III: T2N2M0	1 pulmonary metastasis	None	None
5	III: T2N2M0	II: T2N1M0	III: T2N2M0	Cervical lymph node	None	Down
6	III: T3N2M0	III: T3N2M0	III: T3N2M0	None	None	None
7	III: T2N2M0	III: T3N1M0	III: T3N1M0	Cervical lymph node	Skull base bone involvement	None
8	III: T3N2M0	III: T3N2M0	III: T3N2M0	None	None	None
9	III: T2N2M0	III: T2N2M0	III: T2N2M0	None	Cervical lymph node	None
10	III: T1N2M0	III: T1N2M0	II: T1N1M0	None	None	None
11	III: T3N1M0	IVA: T4N0M0	IVA: T4N0M0	None	Intracranial involvement	Up
12	III: T3N1M0	III: T3N1M0	III: T3N1M0	None	None	None
13	III: T2N2M0	III: T2N2M0	III: T2N2M0	None	None	None
14	IVA: T1N3M0	IVA: T1N3M0	IVA: T1N3M0	None	None	None
15	II:T1N1M0	II:T1N1M0	II:T1N1M0	None	None	None
16	III: T1N2M0	I: T1N0M0	I: T1N0M0	None	None	Down
17	II:T2N0M0	II:T2N0M0	II:T2N0M0	None	None	None
18	IVA: T4N3M0	IVA: T4N3M0	IVA: T4N3M0	None	Cervical lymph nodes	None
19	III:T1N2M0	III:T1N2M0	III:T1N2M0	None	None	None
20	IVB:T3N2M1	III: T3N2M0	III: T3N2M0	1 pulmonary metastasis	None	Down
21	IVB:T3N3M1	IVB:T4N3M1	IVA: T4N2M0	None	Intracranial involvement	None
22	III:T1N2M0	III:T1N2M0	III:T1N2M0	Cervical lymph node	None	None
23	III:T1N2M0	III:T1N2M0	III:T1N2M0	Cervical lymph node	None	None
24	III: T1N2M0	II:T1N1M0	II:T1N1M0	Cervical lymph node	None	Down
25	II:T2N1M0	II:T2N1M0	II:T2N1M0	None	None	None
26	IVA: T3N3M0	IVA: T3N3M0	IVA: T3N3M0	None	None	None
27	III:T3N2M0	III:T3N1M0	III:T3N1M0	Cervical lymph node	None	None
28	IVA:T0N3M0	IVA: T1N3M0	IVA: T1N3M0	None	Primary lesion	None