Figure 4

Velocity images of a normal subject in a slice from the midcavity portion of the LV. Line 1 presents diastolic images and line 2 presents systolic images. Column (a) depicts the images of the radial component. The several tones of blue in the myocardium in Line 1 represent the expansion while the tones of red in the same region in Line 2 represent the contraction. Column (b) presents the images of the horizontal rotation component. The tones of blue represent counterclockwise rotation while the tones of red represent clockwise rotation. Column (c) presents the images of the vertical component. The tones of blue represent downward motion while the tones of red represent upward motion. The color scale is shown at the top right of the figure.