What is an artifact on an ultrasound?

What is an artifact on an ultrasound?

Artifacts are any alterations in the image which do not represent an actual image of the examined area. They may be produced by technical imaging errors or result from the complex interaction of the ultrasound with biological tissues.

What are the types of artifacts in ultrasound?


  • acoustic enhancement.
  • acoustic shadowing.
  • aliasing artifact.
  • anisotropy.
  • bayonet artifact.
  • beam width artifact.
  • blooming artifact.
  • color bruit artifact.

How can ultrasound avoid artifacts?

One can simply avoid this artifact by shielding or turning off all elec- trical equipment to ensure that the artifact does not hinder proper examination of the cardiac anatomy. Cauterization artifact is another example of how external electrical equipment can cause distorted ultrasound images.

What is acoustic shadowing in ultrasound?

An acoustic shadow is an ultrasound artifact occurring at boundaries between significantly different tissue impedances, resulting in signal loss and a dark appearance. Shadow detection is important as shadows can identify anatomical features or obscure regions of interest.

What is shadowing on ultrasound?

The phenomenon of acoustic shadowing (sometimes, somewhat tautologically, called posterior acoustic shadowing) on an ultrasound image is characterized by a signal void behind structures that strongly absorb or reflect ultrasonic waves. It is a form of imaging artifact.

What is M mode ultrasound used for?

Background: M-mode or “motion” mode is a form of ultrasound imaging that is of high clinical utility in the emergency department. It can be used in a variety of situations to evaluate motion and timing, and can document tissue movement in a still image when the recording of a video clip is not feasible.

What are the examples of artifacts?

Examples include stone tools, pottery vessels, metal objects such as weapons and items of personal adornment such as buttons, jewelry and clothing. Bones that show signs of human modification are also examples.