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背景:B超检查是测定胆囊排空率的常用方法之一,目前胆囊排空率餐后测定时间选择的差异较大并影响到该方法的应用,探讨较理想的餐后测定时间将有益于临床实践。目的:探讨B超测定胆囊排空率的餐后测定时间。方法:对13例健康志愿者于空腹以及流质脂餐后30、60、90和120 min时用B超测定胆囊容积,计算并比较各时点的胆囊排空率。结果:13例健康志愿者餐后30 min时的胆囊排空率为55.0％±13.2％,与60、90和120 min时的排空率相比无显著差异（P>0.05）,但餐后30 min时数据的个体间变异系数最小。结论:B超测定胆囊排空率,餐后30 min时的测定值波动范围相对较小,能较客观地反映胆囊动力状态。
BACKGROUND: B-ultrasound is one of the commonly used methods to determine the rate of gallbladder emptying. At present, the difference in the timing of post-meal measurement of gallbladder emptying rate is large and affects the application of this method. It is beneficial to explore the ideal postprandial measurement time Clinical practice. Objective: To investigate the determination of postprandial time of gallbladder emptying rate by B ultrasound. Methods: Thirteen healthy volunteers were used to measure the gallbladder volume at 30, 60, 90 and 120 minutes after fasting and fluid lipid meal by B ultrasound. The gallbladder emptying rate was calculated and compared at each time point. Results: The gallbladder emptying rate of 13 healthy volunteers at 30 min after meal was 55.0% ± 13.2%, which was not significantly different from that at 60, 90 and 120 min (P> 0.05) The coefficient of variation of the data was the smallest at 30 min. Conclusion: B-ultrasonography was used to determine the rate of gallbladder emptying. The range of fluctuation of measured value at 30 min after meal was relatively small, which could objectively reflect the dynamic state of gallbladder.