| abstract |
This invention is a method for tracking motion of tissue in three or four dimensions by obtaining a model from imaging data having tag planes (1, 2, 3) from which a grid of control points may be defined. First, knot planes are calculated from the grid of control points of the imaging data. Next, the knot planes are fitted to the tag planes to obtain the model of the tissue. Next, motion of tissue in three or four dimensions is represented with the model of the tissue. Also disclosed is a method for reconstructing tag surfaces with B spline surfaces from imaging data having sets of image slices with tag data, and calculating motion between the B spline surfaces. |