How to Perform Cardiac Contrast-Enhanced Ultrasound (cCEUS): Part I.

Ultrasound enhancing agents (UEAs, formerly called contrast agents) for assessments of the left heart have improved the applicability of echocardiography and the accuracy of echocardiographic measurements. UEAs have been recommended for several diagnostic echocardiographic procedures by national and supernational agencies. The increased use of UEAs during the last years provided more evidence and experience in clinical practice data which is helpful for optimizing the UEA procedures and which will be useful for both newcomers to UEA in echocardiography and sonographers/physicians with experience in echocardiography with UEAs. In two parts, this review focuses on the "how to do" for the approved UEA applications. This is part 1, covering the available UEAs and providing specific guidance on the assessment of global and regional LV function. Part 2 covers the imaging of myocardial disease and masses as well as myocardial perfusion. Recommendations include the application of UEAs in two-dimensional echocardiography as there is limited data on three-dimensional echocardiography. A step-by-step approach is proposed for each of the procedures as well as guidance on how to interpret recordings and how to report them.