H Weskott

Contrast enhanced colour/power Doppler US: 1. Can be utilised for further assessment of the degree of vascularisation in joints of patients with rheumatoid arthritis. (Recommendation Level: C;2b) 2. Repeat contrast enhanced Doppler US may provide useful information on the response to treatment, to guide therapeutic strategy. The technique has the potential to be utilised within dedicated centres using standardised methodology. (Recommendation Level: C

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Initially, a set of guidelines for the use of ultrasound contrast agents was published in 2004 dealing only with liver applications. A second edition of the guidelines in 2008 reflected changes in the available contrast agents and updated the guidelines for the liver, as well as implementing some non-liver applications. Time has moved on, and the need for international guidelines on the use of CEUS in the liver has become apparent. The present document describes the third iteration of recommendations for the hepatic use of contrast enhanced ultrasound (CEUS) using contrast specific imaging techniques. This joint WFUMB-EFSUMB initiative has implicated experts from major leading ultrasound societies worldwide. These liver CEUS guidelines are simultaneously published in the official journals of both organizing federations (i.e., Ultrasound in Medicine and Biology for WFUMB and Ultraschall in der Medizin/European Journal of Ultrasound for EFSUMB). These guidelines and recommendations provide general advice on the use of all currently clinically available ultrasound contrast agents (UCA). They are intended to create standard protocols for the use and administration of UCA in liver applications on an international basis and improve the management of patients worldwide.

Ultrasound contrast agents (UCA), in conjunction with contrast specific imaging techniques, are increasingly accepted in clinical use for diagnostic imaging and post-interventional workup in several organs. Presently, there is no guidance document providing a description of essential technical requirements, proposed investigator qualifications, suggested investigational procedures and steps, guidance on image interpretation, recommended and established clinical indications and safety considerations.