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.The need for these guidelines was highlighted following the EFSUMB Board of Directors (Delegates) meeting at the EUROSON Congress at Copenhagen in March, 2003. During their development these guidelines were presented at the EFSUMB special consensus meeting for the use of contrast agents in ultrasound
EUS elastography of mediastinal lymph nodes can be performed reliably. The results are good for a noninvasive technique, but they remain inferior to the success rate of EUS-guided FNAB. The method might occasionally be useful for targeting the most suitable lymph nodes for FNAB.
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