title: Magnetic resonance tagging for diagnosis of focal hypertrophic cardiomyopathy in a child.
abstract: Magnetic resonance imaging has become an important diagnostic tool in the differential diagnosis of lesions for evaluation of cardiovascular disorders. In magnetic resonance tagging (MRt), tissue elements are magnetically labeled so that their positions can be tracked as a function of time. Thus, MRt evaluates heart wall motion both qualitatively and quantitatively. We present herein the case of a 12-year-old boy who had chest pain, dyspnea on effort and murmur. On cardiac computed tomography, there was focal thickening of the left ventricular posterior wall, similar to a mass. MRt indicated active displacement and deformation of the tags at the level of the hypertrophic myocardium during systole, as with normal myocardium. Thus, the tagged images supported the diagnosis of focal hypertrophic cardiomyopathy (HCM). In view of these results, MRt should be considered as a useful technique for differentiating between a mass-like focal lesion such as neoplasm and HCM.
authors.affiliation: Department of Radiology, Baskent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Gökçen
authors.initials: G
authors.lastname: Çoban
authors.affiliation: Department of Radiology, Gaziermir Nevvar Salih Isgoren State Hospital, Izmir, Turkey.
authors.forename: Müge Afşar
authors.initials: MA
authors.lastname: Yıldırım
authors.affiliation: Department of Radiology, Baskent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Fuldem Yıldırım
authors.initials: FY
authors.lastname: Dönmez
authors.affiliation: Department of Radiology, Baskent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Nefise Çağla
authors.initials: NÇ
authors.lastname: Tarhan
authors.affiliation: Department of Pediatric Cardiology, Baskent University Faculty of Medicine, Ankara, Turkey.
authors.forename: İlkay
authors.initials: İ
authors.lastname: Erdoğan
authors.affiliation: Department of Radiology, Baskent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Coşkun
mesh_terms: D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D004562:Electrocardiography; D006352:Heart Ventricles / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology; D009206:Myocardium / Q000473:pathology*; D016277:Ventricular Function, Left / Q000502:physiology*
keywords: cardiovascular disorder; hypertrophic cardiomyopathy; magnetic resonance imaging; magnetic resonance tagging