www.siemens.comesc-videos br At the recent ESC Congress (September 2009) in Barcelona Spain, Siemens and Medtronic organized satellite symposia on new frontiers conquered in cardiac imaging and therapy. Percutaneous Aortic Valve Replacement has the potential to change the therapy of aortic valve disease according to Dr. Lutz Buellesfeld from the Heart Center in Siegburg, Germany.