The transpulmonary contrast-enhanced Doppler technique using sonicated albumin is useful for assessing the severity of aortic stenosis even in patients with poor Doppler recordings, although the duration of signal enhancement might be affected by left ventricular systolic pressure.

We conclude that right ventricular dP/dt can be estimated by the Doppler method accurately and noninvasively. However, when right atrial pressure is relatively high compared with corresponding right ventricular pressure changes during isovolumic diastole, Doppler-derived peak negative dP/dt might underestimate catheter-derived measurements.

et al. Quantitation of mitral valve tenting in ischemic mitral regurgitation by transthoracic realtime three-dimensional echocardiography. J Am Coll Cardiol 2005; 45:763-9. 3. Delgado V, Tops LF, Schuijf JD, et al. Assessment of mitral valve anatomy and geometry with multislice computed tomography. J Am Coll Cardiol Img 2009;2:556 -65. 4. Kaji S, Nasu M, Yamamuro A, et al. Annular geometry in patients with chronic ischemic mitral regurgitation: three-dimensional magnetic resonance imaging study. Circulation 2005;112:I409 -14. ‹ A P P E N D I X For MSCT protocols and 3D measurements, supplementary figures 1 and 2, and a supplementary table, please see the online version of this article.

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