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. Author manuscript; available in PMC: 2010 Jun 7.
Published in final edited form as: Radiology. 2008 Jan;246(1):229–240. doi: 10.1148/radiol.2461070053

Figure 4.

Figure 4

Three sets of left and right ventricular contours of the last (20th), 15th, and 13th cine frames are shown on the last cine frame of the midleft ventricle short-axis view. The contours of the intermediate frames have been omitted for clarity. The outermost contours are of the last frame and have been drawn manually. These are automatically updated for the other cine frames on the basis of the displacement vectors. Arrows indicate the sequence of contour generation. They point from contour positions in a later cine frametothoseinanearlierframeinthe reversetrackingprocess(Appendix E1,http://radiology.rsnajnls.org/cgi/content/full/246/1/229/DC1).