In this article we present the myocardial deformation imaging (MDI) studies of three daughters of a man with hypertrophic cardiomyopathy (HCM) who died suddenly The daughters had been referred for genetic counselling several months earlier We demonstrate that, despite the absence of conventional two-dimensional echo characteristics of HCM, MIDI accurately and easily demonstrated the presence of the disease in the two daughters with the genetic disorder (Neth Heart J 2010,18 452-4)