TY - CHAP M1 - Book, Section TI - Chapter 19. Right Ventricular Cardiomyopathies A1 - Sorrell, Vincent L. A1 - Indik, Julia H. A1 - Kalra, Nishant A1 - Marcus, Frank I. A2 - Pahlm, Olle A2 - Wagner, Galen S. PY - 2011 T2 - Multimodal Cardiovascular Imaging: Principles and Clinical Applications AB - The evaluation of right ventricular (RV) size and function in normal and pathologic conditions is challenging due to its complex shape and nonsymmetrical contraction. Unlike the left ventricle (LV), the RV is crescent shaped and truncated, with separate inflow and outflow portions. The normal RV is triangular (curved) when viewed sagittally, crescent shaped when viewed axially, and similar to a teapot when viewed coronally (Fig. 19–1). It is thin walled, highly trabeculated, and devoid of the LV's extensive circumferential myofibrillar architecture. The RV apex may be dominated by the shape and function of the LV apex or may be entirely separate and independent ("butterfly" apex) (Fig. 19–2).1 The RV is strongly influenced by the normally concave interventricular septum, and its shape is influenced by acute and chronic pathologic pressure and volume changes. Whereas the normal LV has the shape of a prolate ellipse (and becomes a sphere in many disease states), there is no convenient model that accurately approximates normal or pathologic RV geometry. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accesscardiology.mhmedical.com/content.aspx?aid=8763886 ER -