Evaluation of stunned and infarcted canine myocardium by real time myocardial contrast echocardiography - Dourado, Paulo Magno Martins; Tsutsui, J. M.; Mathias Junior, Wilson; Andrade, Jose Lazaro de; Luz, Protásio Lemos da; Chagas, Antonio Carlos Palandrini (Brazilian Journal of Medical and Biological Research, 2003)