Tròn, hình ảnh anechoic, chất đống dọc theo bên cánh trái trong một máy quét dọc (C). Một chuyển động nhẹ của tàu thăm dò cho thấy rằng tất cả các giao tiếp hình ảnh, và chứng minh điều này là đại tràng giảm dần và haustra của nó là những cấu trúc theo chiều thẳng đứng | Stomach and Duodenum 35 Fig. . Round anechoic images piled up along the left flank in a longitudinal scan C . A slight movement of the probe shows that all these images communicate and demonstrate this is the descending colon and its haustra Fig. . Esophageal varices. In this longitudinal scan several tubular anechoic images that communicate with each other along the lesser omentum arrows can be observed behind the liver. These are stomachic coronary varices L liver A aorta are vertical structures located in the flanks the transverse colon is horizontal at the epigastric level and distinct from the stomach 4 . The rectum seems for the time being without ultrasound interest in emergency medicine. Abdominal Esophagus ultrasound holds a modest place behind fibros-copy. However esophageal varices are accessible to ultrasound they give sinuous tubular anechoic structures along the lesser omentum a hyper-echoic area located inside the smaller curvature of the stomach Fig. . With GI tract hemorrhage detection of esophageal varices cannot be blamed for their rupture and thus the cause of bleeding but can help in deciding whether major bleeding requires blind life-saving esophageal tamponade. In addition ultrasound can provide other signs of portal hypertension see Chap. 7 . A Blakemore-Linton tube can be inserted with ultrasound guidance. The intragastric position of the tube before filling can be detected by visualizing the acoustic shadow which is frank tubular and unique. The gastric balloon can then be inflated. It looks like a large round image convex outside highly echoic with a frank acoustic shadow. The tube is then pulled to the head until resistance is encountered. The gastric balloon becomes visible at the top of the fundus Fig. . The esophageal balloon can then be inflated. It will create a markbehind the left auricle see Fig. p 137 . Monitoring thus with ultrasound is quick and very reliable if the operator is trained and the patient has .
