Kenji Suzuki Isao Horiba Noboru Sugie Michio Nanki Contour extraction of left ventricular cavity from digital subtraction angiograms using a neural edge detector. 55-69 2003 34 Systems and Computers in Japan 2 http://dx.doi.org/10.1002/scj.1190 db/journals/scjapan/scjapan34.html#SuzukiHSN03