Document Detail

Right atrioventricular valve atresia: anatomic evaluation with MR imaging.
MedLine Citation:
PMID:  3493646     Owner:  NLM     Status:  MEDLINE    
MR was used to differentiate the classical form of tricuspid atresia, in which the atrioventricular connection is absent, from a rare type of right atrioventricular obstruction, in which the valve is imperforate, and from some Ebstein's malformations in which atrioventricular flow is obstructed by a displaced tricuspid valve. ECG-gated, T1-weighted spin-echo MR imaging was performed at 0.3 or 1.0 T in six patients with classical tricuspid atresia, in one patient with tricuspid atresia due to an imperforate tricuspid valve, and in two with Ebstein's malformation. In the patients with classical tricuspid atresia, epicardial fat within the atrioventricular sulcus that was interposed between the right atrium and the ventricular mass caused increased intensity. This finding was not present in the patients with imperforate tricuspid valve or Ebstein's malformation in whom the sulcus appeared normal. Postmortem examination of five other hearts with classical tricuspid atresia revealed epicardial fat extending into the atrioventricular sulcus, which separated the right atrium and the ventricular mass. In three hearts with Ebstein's malformation, the sulcus extended only to the level of the atrioventricular junction. The characteristic MR appearance of fat adjacent to the muscular floor of the right atrium, therefore, serves to identify the atrioventricular sulcus and allows differentiation of the types of right atrioventricular valve atresia.
B D Fletcher; M D Jacobstein; C R Abramowsky; R H Anderson
Related Documents :
16955816 - Doppler echocardiographic prediction of pulmonary hypertension in west highland white t...
7138126 - Neointimal obstruction of carpentier-edwards valved conduit in two patients with modifi...
19729696 - Congenitally unguarded tricuspid valve orifice with multiple other defects in a child w...
9270116 - Fatal rupture of an acquired aneurysm of the pulmonary artery: rare complication after ...
760156 - Malapposition of the mitral valve: a two-dimensional echocardiographic sign of left ven...
9003276 - Locked-in syndrome resulting from cervical spine gunshot wound.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  148     ISSN:  0361-803X     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  1987 Apr 
Date Detail:
Created Date:  1987-04-09     Completed Date:  1987-04-09     Revised Date:  2008-02-15    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  671-4     Citation Subset:  AIM; IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Adipose Tissue / pathology
Child, Preschool
Heart Atria
Magnetic Resonance Spectroscopy / diagnostic use*
Tricuspid Valve / abnormalities*
Tricuspid Valve Stenosis / diagnosis*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  MR imaging of the aortic root and proximal coronary arteries.
Next Document:  The radiographic distinction between pericardial and myocardial calcifications.