Guidelines Blog

The Role of Contrast Ultrasound in Liver Interventions

Posted by Emily Smith on Aug 6, 2018 8:26:39 AM

Since the spring of 2016, the growth of ultrasound in the United States has erupted with the FDA approval of contrast for liver examinations. The contrast agents used for ultrasound consist of very small bubbles of gas surrounded by a fatty shell. These are smaller than red blood cells, so they can pass through the lungs safely. It is injected into the vascular system and does not filter through the kidneys or cause a contrast reaction that may be seen with CT or MRI contrast agents. The introduction of these micro-bubbles has allowed the visualization of the tiny vessels in the parenchyma of the liver that was previously only studied with B mode and Doppler techniques with limited success. These tiny bubbles are confined to the vascular space, making them a bit different than CT and MRI contrast agents, which rapidly clear from the blood pool into the extravascular space.1

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Topics: Interventional Ultrasound, Contrast Imaging, CEUS, contrast ultrasound, contrast enhanced ultrasound