Correspondence to: Zhaoping Cheng, MD, Department of Nuclear Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Q-ianfoshan Hospital, Jinan, Shandong 250014. Email

E-mail Address: [email protected]

https://orcid.org/0000-0001-7217-7284

Department of Nuclear Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China (Y.D., Z.C.).