Wietske Ineke Meyering Marco Antonio Gutierrez Cardiac Image Sequence Analysis Using a Spatiotemporal Frequency Approach. 252-257 2001 conf/sibgrapi/2001 SIBGRAPI http://dlib2.computer.org/conferen/sibgrapi/1330/pdf/13300252.pdf db/conf/sibgrapi/sibgrapi2001.html#MeyeringG01