Fig. 1From: Learning curve for the acquisition of 20 standard two-dimensional images in advanced perioperative transesophageal echocardiography: a prospective observational studyLearning curve of each trainee for performing their first 20 transesophageal echocardiography (TEE) examinations. The cumulative success rate ranges from 70 to 90% by the 20th caseBack to article page