Guy Shechter Cengizhan Ozturk Jon R. Resar Elliot R. McVeigh Respiratory motion of the heart from free breathing coronary angiograms. 1046-1056 2004 23 IEEE Trans. Med. Imaging 8 http://dx.doi.org/10.1109/TMI.2004.828676 db/journals/tmi/tmi23.html#ShechterORM04