Abstract
Color Doppler imaging hasrenewed andwidened the capabilities of the flow mapping technique. In addition to its facilitation, it has some specific advantages: by showing thespatio-temporal variations of jets within the cardiac cycle, it provides aquadri-dimensional insight into flow dynamics, which has improved the semiquantitative assessment of the severity in mitral regurgitation by taking into account theduration of the regurgitant jet within systole. It is also crucial for the study ofmultiple jets often seen incombined mitral disease and related to various diseased components of the mitral apparatus. Peculiar features of sites, directions and timings of jets enable the recognition of their mechanisms and draw the attention to a possible surface adherence effect, in the case of complicated trajectories impinging on the cardiac structures. Color Doppler imaging is also unique in singling out theprecise site where thejets originate. This leads to developments ofquantitation of stenosis based on planimetry of jet origin areas and tonew quantitative methods relying onflow convergence information on one hand, and on the other hand, it helpsapproach to special lesional mechanisms such as, for instancebicuspid aortic valves, easily singled out by flow information from tricuspid aortic valves. This information will be crucial in the discussion of thetype of repair procedure in the future.
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This work was partly supported by funds from CNAMTS and the ARNTIC Research Association.
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Veyrat, C., Kalmanson, D. Direction, site of origin and duration of jets: implications in the color Doppler assessment of valvar lesions. Int J Cardiac Imag 9, 157–168 (1993). https://doi.org/10.1007/BF01145317
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DOI: https://doi.org/10.1007/BF01145317