[1] Ente Ospedaliero Cantonale, Cardioctr Ticino Inst, Div Cardiol, Via Tesserete, 48, CH-6900 Lugano, Switzerland
[2] Univ Utrecht, Univ Med Ctr Utrecht, Dept Cardiol, Div Heart & Lungs, NL-3584 CX Utrecht, Netherlands
[3] Univ Hosp Lausanne, Dept Radiodiagnost & Intervent Radiol, CH-1012 Lausanne, Switzerland
[4] Univ Lausanne, CH-1012 Lausanne, Switzerland
[5] Univ Bologna, Dept Expt Diagnost & Specialty Med DIMES, Unit Cardiol, IRCCS Policlin St Orsola Malpighi, I-40138 Bologna, Italy
[6] Ctr Biomed Imaging CIBM, CH-1012 Lausanne, Switzerland