Fig. 9

Suggested diagnostic flow for stage I-IIIA NSCLC patients in nodal groups (Note: the remaining 9 nodal groups with [¹⁸F]FAPI SUV_max greater than 6.2 and CHA were still undetermined). Abbreviation: CHA = calcification or high-attenuation, NPV = negative predictive value, PPV = positive predictive value