口服水对比剂及阳性对比剂均能满意地充盈胃腔（26/26），在轴位图像胃壁结构显示上单纯口服水对比剂效果好（25/26），且对周围图像无影响（伪影0/26）。
Both water and positive contrast media can be full of stomach(26/26). The showing of stomach wall is good in axial image(25/26), and no forgery to surrounding organs(0/26).
结果：使用气钡双重对比剂动态造影法摄像后再慢动作回放观察的方法发现早期上段食道癌的阳性率最高。
Results: the positive rate of gas-barium double contrast kinesis radiography with the observation through slow playback to discover nonage upper esophageal carcinoma is the highest.
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