title: [2-dimensional echocardiography: principles, methods and the normal images].
mesh_terms: D004452:Echocardiography / Q000379:methods*; D006321:Heart / Q000033:anatomy & histology; D006801:Humans; D011187:Posture; D012016:Reference Values
vernacular_title: Dvurazmerna ekhokardiografiia (2REKhOK)--printsipi, metodika i normalni obrazi.