X线电视在牛消化道疾病检查上的应用　Ⅰ.网胃与皱胃的正常X线影像特征

Application of X ray TV in Diagnosing the Diseases of Bovine Digestive System Ⅰ. Radiological Appearances of the Reticulum and Abomasum

为了掌握健康牛网胃、皱胃的运动规律及其Ｘ线影像特征，运用日本带广畜产大学的大型Ｘ线诊疗车对该校８０头乳牛的网胃和皱胃运动进行了长期观察。结果发现，由于网胃的网格里有沙粒、细石和金属异物等存在，使网胃的影像清晰可见。网胃的运动为两相收缩，即从运动休止状态开始沿着膈的方向进行第一阶段的收缩，稍为停顿后，再继续第二阶段强有力的收缩。皱胃底部常沉积有一定量的泥沙以及金属异物等，使得皱胃更易被辨认。

Eighty dairy cattle were used for investigating the movement patterns and the radiological appearances of the reticulum and abomasum. Reticulum could be observed clearly because of the presence of the sand, little stones or wire inside the cellulae reticuli. The contractive movement of the reticulum consists of two stages. The first one started right after its resting phase, then took a rest, and then continued its second one. The second stage of contract was more powerful than the first. Only the bottom of the abomasum could be observed because of the presence of the sand, little stones and the wires inside it.