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目的实时超声观察胃排空是研究胃运动功能安全、无损伤、重复性好的方法。胃癌患者可能存在胃运动功能障碍。本研究通过观察胃癌患者的胃液体排空，探讨胃癌患者的胃运动功能。材料与方法胃液体排空时间测定，通过对胃窦体积的观察，测定28例胃癌及23例正常人的胃排空时间。所用仪器为日本产ALOKA256型线阵式实时超声显像仪，探头频率3．5MHz。结果胃癌患者的胃液体排空时间为53．75±8．67min，较正常对照组的43．70±10．38min显著延迟（P＜0．05）。结论胃癌患者存在着明显的胃液体排空延迟，表明存在胃运动功能障碍。
Objective To observe gastric emptying by real-time ultrasound is a method to study the safety, no damage and reproducibility of gastric function. Gastric cancer patients may have gastric motor dysfunction. This study investigated the gastric emptying in patients with gastric cancer to investigate the gastric motor function in patients with gastric cancer. Materials and Methods Gastric fluid emptying time was measured. Gastric emptying time was measured in 28 cases of gastric cancer and 23 cases of normal persons by observing the gastric antrum volume. The instrument used was a Japanese ALOKA256 line array real-time ultrasound imaging system with a probe frequency of 3.5 MHz. Results The gastric emptying time of gastric cancer patients was 53.75±8.67min, which was significantly delayed compared with 43.70±10.38min in the normal control group (P<0.05). Conclusion There is a significant delay in gastric emptying in patients with gastric cancer, indicating the presence of gastric motor dysfunction.