Transoesophageal Echo You are here:HomeOur ServicesClinical servicesCardiology ServicesDiagnostic servicesTransoesophageal echo A Transoesophageal Echocardiogram is a specialised echo performed under sedation. Images of the heart are taken from an endoscopy probe in the oesophagus ("food pipe"). This provides a very detailed look at heart structures not easily seen by Transthoracic Echocardiogram.