title: A puzzle with one piece.
authors.affiliation: Queen's University, Kingston, Canada.
authors.forename: Paul
authors.initials: P
authors.lastname: Malik
mesh_terms: D002318:Cardiovascular Diseases / Q000175:diagnosis* / Q000628:therapy; D002319:Cardiovascular System / Q000000981:diagnostic imaging*; D017023:Coronary Angiography; D017147:Defibrillators, Implantable; D004452:Echocardiography; D006801:Humans; D008279:Magnetic Resonance Imaging; D011856:Radiographic Image Enhancement