Placing a saline bag underneath the heart enhances transgastric transesophageal echocardiographic imaging during cardiac displacement for off-pump coronary artery bypass surgery. - Sung TY; Kwon MY; Muhammad HB; Kim JD; Kang WS; Kim SH; Kim DK; Yoon TG; Kim TY; Kim JH; Kang H (Journal of cardiothoracic and vascular anesthesia, 2014)