结论：超声能准确评价正常胃排空功能状态。
Conclusion: Ultrasound was able to assess the empty function of stomach in healthy subjects.
youdao
结论FD患儿有胃排空障碍，胃动力改变是儿童fd的重要原因之一。
Conclusion Delayed emptying of the stomach might cause FD in children.
检查前胃必须完全排空。
The stomach should be completely empty.
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