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Contrast enhanced ultrasound in liver imaging.

Abstract：

:Ultrasound contrast agents were originally introduced to enhance the Doppler signals when detecting vessels with low velocity flow or when imaging conditions were sub-optimal. Contrast agents showed additional properties, it was discovered that a parenchymal enhancement phase in the liver followed the enhancement of the blood pool. Contrast agents have made ultrasound scanning more accurate in detection and characterization of focal hepatic lesions and the sensitivity is now comparable with CT and MRI scanning. Further, analysis of the transit time of contrast agent through the liver seems to give information on possible hepatic involvement, not only from focal lesions but also from diffuse benign parenchymal disease. The first ultrasound contrast agents were easily destroyed by the energy from the sound waves but newer agents have proved to last for longer time and hereby enable real-time scanning and make contrast enhancement suitable for interventional procedures such as biopsies and tissue ablation. Also, in monitoring the effect of tumour treatment contrast agents have been useful. A brief overview is given on some possible applications and on different techniques using ultrasound contrast agents in liver imaging. At present, the use of an ultrasound contrast agent that allows real-time scanning with low mechanical index is to be preferred.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Nielsen MB,Bang N

doi

10.1016/j.ejrad.2004.03.022

keywords:

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

S3-8

eissn

0720-048X

issn

1872-7727

pii

S0720048X04001226

journal_volume

51 Suppl

pub_type

杂志文章,评审

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