正常胃窦

中央偏右是正常的胃窦延伸至幽门的外观。十二指肠的起始段（十二指肠球部）在右边较远处。
This is the normal appearance of the gastric antrum extending to the pylorus at the right of center. The first portion of the duodenum (duodenal bulb) is at the far right.