Table 1. The search strategy summary.

Items	Specification
Date of search	17/02/2022–01/10/2022
Databases and other sources searched	Web of Science and PubMed
Search terms used	“Terahertz imaging”, “Terahertz imaging” + “Breast”, “Terahertz imaging” + “Brain”, “Terahertz imaging” + “Skin” and “Terahertz imaging” + “Cancer”
Timeframe	2017–2022
Inclusion and exclusion criteria	Published full-text journals and conference papers in English, excluding reviews and non-English papers. Papers that utilized terahertz imaging for biological tissue imaging were selected, otherwise excluded
Selection process	The literature selection was done independently by Cong M. Differences were resolved by consensus