Ancona, G.F.M. d'

graft patient artery measurement intraoperative surgery patency value heart chapter group probe anastomosis doppler transit vessel study curve anastomoses surgeon karamanoukian hl blood graft patency thorac regurgitation technology bergsland j finding verification karamanoukian technique flow curves method ricci m flow values result ischemic quality experience salerno ta blood flow revascularization pubmed imaging revision valve regurgitation procedure valve medline ultrasound pattern midcab angiography off-pump system bergsland suture stenosi analysis hemodynamic device salerno diastolic evaluation cardiovasc difference systolic distance table epicardial crystal volume heart surg forum ann thorac surg interpretation velocity ricci target assessment pi values