Ultrasonography is an ideal diagnostic tool for the investigation of bovine gastrointestinal disorders, the most common of which are traumatic reticuloperitonitis, left and right displacement of the abomasum, ileus of the small intestine, and dilatation and displacement of the cecum. An ultrasonographic examination is performed on nonsedated, standing cattle using a 3.5 MHz to 5.0 linear or convex transducer. When a tentative diagnosis has been made based on the clinical findings, often only the region in question is examined. For example, in cases with suspected traumatic reticuloperitonitis, the examination is performed in the sternal and parasternal regions, and in cattle suspected of having cholestasis, only the costal part of the abdominal wall on the right side is examined. Even experienced clinicians may not be able to pinpoint the organ affected and make a diagnosis in patients in which abdominal disease is suspected, however. In such cases, both sides of the abdomen are examined. Normally, the reticulum,1,2 spleen,1-4 rumen,2 and parts of the abomasum5,6 are seen on the left side, and the liver,7-9 omasum,10,11 parts of the abomasum,5,6 small intestine,12,13 large intestine,14,15 and right kidney16 are seen on the right. The uterus may be seen on either side depending on the stage of pregnancy. This article describes the ultrasonographic techniques used for examination of the reticulum, rumen, omasum, abomasum, small intestine, and large intestine. The normal findings are presented followed by a description of the most important diseases of these organs.Ultrasonography of the gastrointestinal tract in cattle
AbstractUltrasonography is an ideal diagnostic tool for investigating gastrointestinal disorders in cattle. It is performed on standing non-sedated cattle using a 3.5 to 5.0 MHz linear or convex transducer. In animals with traumatic reticuloperitonitis, inflammatory fibrinous changes and abscesses can be imaged. Ultrasonography can be used to assess the size, position and contents of the abomasum. In left displacement of the abomasum, the abomasum is seen