Figure 33-9 Five TEE cross sections with myocardial segments identified. A total of 16 myocardial segments are identified and named according to standards adopted by the American Society of Echocardiography and the Society of Cardiovascular Anesthesiologists. (Redrawn from Shanewise JS, Cheung AT, Aronson S. et al: ASE/SCA guidelines for performing a comprehensive intraoperative multiplane transesophageal echocardiography examination: Recommendations of the American Society of Echocardiography Council for Intraoperative Echocardiography and the Society of Cardiovascular Anesthesiologists Task Force for Certification in Perioperative Transesophageal Echocardiography. Anesth Analg 89:870–884, 1999.)