Consideration on the proper use of STC / TGC Present and future Is standardization of ultrasonic images possible?

Abstract

Different examiners’ perceptions of manual sensitivity time control (STC) / time gain compensation (TGC) and differences in adjustment methods may prevent reproducible diagnosis and severity assessment. I describe several adjustment methods that are performed on a daily basis, although with little evidence, and discuss problems associated with them. I would like to emphasize again the significance of STC / TGC after reconfirming the origins of conventional B-mode images and the role of parameters. This is an unavoidable issue for the standardization of B-mode images, and we hope that this will be a good opportunity to deepen discussions in the future.