Imaging of the gastrointestinal tract-novel technologies

Figure 2 Cross-sectional endosonographic image of the distended distal oesophagus allows identification of three oesophageal sub-layers, i. e. mucosa-submucosa, muscle and adventitia. The white shadows inside the water-filled bag (4-5 o’clock) represent artefacts due to convulsions of the water-filled balloon, which results in reduced image quality at low degrees of distension. Modified from [17].