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Abstract

One of the major diagnostic objectives in using an ultrasound contrast agent in the liver is to detect flow in the circulation at a level that is lower than would otherwise be possible. The echoes from blood associated with such flow — in the sinusoids for example — exist in the midst of echoes from the surrounding solid structures of the liver parenchyma, echoes which are almost always stronger than even the contrast-enhanced blood echo. When they can be seen, blood vessels in a nonenhanced image have a low echo level, so that an echo-enhancing agent actually lowers the contrast between blood and the surrounding tissue, making the lumen of the blood vessel less visible.

Keywords

Contrast Agent Ultrasound Contrast Agent Pulse Inversion Harmonic Imaging Harmonic Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Italia 2003

Authors and Affiliations

  • P. N. Burns

There are no affiliations available

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