The points are obtained by attaching Sonometrics sensors onto the
LV surface and into the septum. Upper "ring" of points is from
sensors attached around mitral valve. The lower tip corresponds to the
Click here for more information
about obtaining the data from Sonometric sensors. Datasets are provided by
Marc Dickstein, MD,
Columbia Presbiterian Hospital, New York.
Click here for
The algorithm for approximation/interpolation of a cloud of points by a B-spline surface is provided by Professor George Wolberg.
Click here for the MATLAB source code. The list of files with a short description is in the file sREADME.m, and there is a file testpoints.mat that was used to do the spline fitting and to create the animations. Some of the files have long names, so you will have to modify them for use with a PC version of MATLAB 4.