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Computed Tomography and Ultrasound Contrast Agents

  • E. Edmund Kim

Abstract

Contrast agent-assisted imaging of vasculature is widely employed during the diagnosis of many vascular and neoplastic diseases [1]. Conventional X-ray contrast media are ionic or neutral low molecular weight iodine-containing organic molecules and are able to delineate the vascular bed for a limited time following rapid extravasation into the interstitial space. Such a rapid disappearance of contrast material from the blood narrows the examination time window down to several minutes for the majority of diagnostic applications. Peak enhancement of the aorta takes place 10 to 20 s after the beginning of the injection. Within 2 min, the signal from the blood pool drops approximately fivefold [2].

Keywords

Contrast Agent Focal Nodular Hyperplasia Ultrasound Contrast Agent Total Hepatic Blood Flow Giant Hemangioma 
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 Science+Business Media New York 2001

Authors and Affiliations

  • E. Edmund Kim

There are no affiliations available

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