Time gain compensation

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Time gain compensation (TGC) is a setting applied in diagnostic ultrasound imaging to account for tissue attenuation.[1] By increasing the received signal intensity with depth, the artifacts in the uniformity of a B-mode image intensity are reduced.

This means that a TGC module will increase the amount of gain given to an input signal, as its sampling time increases monotonically. This counteracts the excessive sound-dampening properties of human tissue.


  1. ^ Inderbir S. Gill; Osamu Ukimura (2 December 2008). Contemporary Interventional Ultrasonography in Urology. Springer. p. 104. ISBN 978-1-84800-216-6. Retrieved 19 September 2012.