title: Ghost-boostering phantom gradients.
authors.forename: Luiz F
authors.initials: LF
authors.lastname: Souza
mesh_terms: D001021:Aortic Valve / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004452:Echocardiography; D006801:Humans; D007432:Intraoperative Period; D011312:Pressure