3D Winding Number: Theory and Application to Medical Imaging

Figure 7

Three-dimensional velocity flow field of one frame of the left ventricle in phase of contraction (column 1) under 3 different views and the correspondent cross-sections of the cardiac image volume (column 2). In column 2, the left ventricle is highlighted by white arrows. Row 1 displays the short axis view, whereas rows 2 and 3 show the 2 long axis views. The retrieved 3-dimensional vectors illustrate with accuracy the cardiac motion behavior and overcome shortcomings typical of the 2-dimensional optic flow methods, such as through-plane motion detection.