10 open chest dogs received 68 injections of sonicated dextrose albumin containing room air, sulfur hexafluoride, three kinds of fluorocarbon (C3F8, C4F10, C5F12).

• 10条开胸犬共接受68次注射，二次谐波显像条件下经静脉注射含有不同气体的声振右旋糖酐白蛋白微泡造影剂RA(空气)、SF6(六氟化硫)、FX系列(含有氟碳气体C3F8、C4F10、C5F12)。