title: Tetralogy of Fallot: Preoperative assessment with MR and CT imaging.
abstract: Tetralogy of Fallot has a broad anatomical spectrum. In mild forms of the condition the obstruction is only located in the right ventricular infundibulum, whereas in severe forms the pulmonary valve is atretic, the pulmonary arteries are absent and the lung is supplied by aorto-pulmonary collateral arteries. Surgical management differs from conventional surgery in the former situation, whereas in the latter it is complex and requires reconstruction of the pulmonary arteries (unifocalization) carried out in more than one stage and with a high morbidity rate. The key factors to establish before corrective surgery are the levels and degree of obstruction of the right ventricular outflow tract, the development of the pulmonary arteries and the presence of collateral arteries. The main role of magnetic resonance imaging along with that of computed tomography angiography are discussed and illustrated.
authors.affiliation: Sainte-Justine University Hospital, 3175, chemin de la Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada. Electronic address: chantal_lapierre@ssss.gouv.qc.ca.
authors.forename: C
authors.initials: C
authors.lastname: Lapierre
authors.affiliation: Sainte-Justine University Hospital, 3175, chemin de la Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Dubois
authors.affiliation: Sainte-Justine University Hospital, 3175, chemin de la Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada.
authors.forename: F
authors.initials: F
authors.lastname: Rypens
authors.affiliation: Sainte-Justine University Hospital, 3175, chemin de la Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada.
authors.forename: M-J
authors.initials: MJ
authors.lastname: Raboisson
authors.affiliation: Sainte-Justine University Hospital, 3175, chemin de la Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Déry
mesh_terms: D000328:Adult; D057791:Cardiac Imaging Techniques; D004452:Echocardiography; D006801:Humans; D021621:Imaging, Three-Dimensional; D007223:Infant; D007231:Infant, Newborn; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D019028:Magnetic Resonance Imaging, Cine; D011300:Preoperative Care; D011379:Prognosis; D013771:Tetralogy of Fallot / Q000145:classification / Q000000981:diagnostic imaging* / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D014694:Ventricular Outflow Obstruction / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery
keywords: Heart; MRI; Pulmonary arteries; Tetralogy of Fallot