From the Nuclear Medicine Unit, Department of Radiology, Queen Mary Hospital, Hong Kong.

Received for publication October 19, 2022; revision accepted February 21, 2023.

Conflicts of interest and sources of funding: none declared.

Correspondence to: Tsz-Kit Chow, MBBS(HK), Nuclear Medicine Unit, Department of Radiology, Queen Mary Hospital, 102 Pokfulam Rd, Hong Kong. E-mail: [email protected].