focal defects of ventricular wall motion defined by gated cardiac scintigraphy identified acute myocardial contusion in 28 of 43 patients , involving the right ventricle alone in 18 ( group 1a ) , the left ventricle in 4 ( group 1b ) and both ventricles in 6 ( group 1c ) .
C0018787
cardiac
C0225883
right