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Assessment of intercommunication between the right ventricle and pericardial cavity. Microcavitation contrast is injected intravenously to assess intercommunication between the right ventricle and pericardial cavity. There is no leakage from the right ventricle into the pericardial cavity. RV, right ventricle; RA, right atrium; LV, left ventricle; LA, left atrium.
