Predictive significance of 18F-FDG PET/CT metabolic parameters for the expression level of HER2 in gastric cancer - Shilai, Zhang; Shaozhou, Mo; Linlin, Wei; Hua, Chai; Weiwei, Pu; Ziya, Liu; Wenming, Qiu; Zhi, Yang; Hai, Liao; Guoyou, Xiao (Frontiers in Oncology, 2025)