Abstract: There is provided a method for monitoring fluid flow, the method including: acquiring a pulse-echo signal from each of a plurality of spatially adjacent regions; for each of the pulse echo signals, forming a velocity spectrum; combining the plurality of velocity spectra into a composite data set which contains both spatial data and velocity data; and displaying the composite data set so as to present at least one aspect of the velocity data with at least one aspect of the spatial data. By combining both spatial and spectral velocity data into a composite data set and displaying aspects of the spatial data with aspects of the velocity data, the clinician can easily gauge in a quantitative or semi-quantitative way, both the size and velocities of fluid flows. In particular, the technique is useful for assessing valvular regurgitation jets in cardiac blood flows.