Abstract
The purpose of this article is to illustrate the usefulness of MR imaging in the clinical evaluation of congenital and acquired cardiac diseases characterised by ventricular septal wall motion abnormality. Recognition of the features of abnormal ventricular septal motion in MR images is important to evaluate the haemodynamic status in patients with congenital and acquired heart diseases in routine clinical practice.Electronic supplementary materialThe online version of this article (doi:10.1007/s13244-011-0093-4) contains supplementary material, which is available to authorized users.
Highlights
The interventricular septum (IVS) is an important structure that plays a direct role in bi-ventricular function, but can reflect changes in the function of either ventricle, exhibiting abnormal configurations and motions that have physiological and diagnostic value [1].Many conditions can cause abnormal motion of the ventricular septum
Whereas in the short-axis view, the left ventricular (LV) cavity maintains a circular profile throughout the cardiac cycle in normal subjects, in right ventricular (RV) volume overload, the left ventricle assumes a progressively more D-shaped cavity as the ventricular septum flattens and progressively loses its convexity with respect to the centre of the RV cavity during diastole, with relative sparing of LV deformation at end-systole (Movie 1) [8]
In patients with corrected transposition of the great arteries (ccTGA) and dextro transposition of the great arteries (D-TGA) following the atrial switch procedure, in which the right ventricle is exposed to systemic pressure and the left ventricle is exposed to only pulmonary pressure, the ventricular septum can bow into the left ventricle during end-systole (Fig. 7)
Summary
Magnetic resonance imaging of abnormal ventricular septal motion in heart diseases: a pictorial review. Cristina Méndez & Rafaela Soler & Esther Rodriguez & Marisol López & Lucia Álvarez & Noela Fernández & Lorenzo Montserrat. Received: 25 September 2010 / Revised: 4 January 2011 / Accepted: 4 April 2011 / Published online: 17 April 2011 # European Society of Radiology 2011
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