Holt S, Cervantes J, Wilkinson A A, Wallace J H
Gastroenterology. 1986 Apr;90(4):918-23. doi: 10.1016/0016-5085(86)90868-1.
Simultaneous studies of gastric emptying by ultrasound and scintigraphy were performed in 14 subjects to assess the use of ultrasound for the measurement of gastric emptying rate. The presence of air in the stomach prevented the acquisition of gastric emptying data by ultrasound in 3 of the 14 subjects. In the remaining 11 subjects there was no significant difference between values for the half-time (t1/2) of gastric emptying obtained by scintigraphy [for anterior imaging, mean t1/2 = 20.9 +/- 9.9 min (+/- SD); for anterior and posterior imaging, geometric mean t1/2 = 21.1 +/- 10.5 min (+/- SD)] compared with those derived by ultrasound [mean t1/2 = 20.2 +/- 10.0 min (+/- SD), p greater than 0.05 for each comparison]. A significant correlation between the t1/2 of gastric emptying derived by scintigraphy (anterior scanning and geometric mean of counts obtained by anterior and posterior scanning) and the t1/2 measured by ultrasound was obtained (r2 = 0.7, 0.69, respectively). These results imply that ultrasound can be used for the valid assessment of the gastric emptying rate in humans.
对14名受试者进行了超声和闪烁扫描法同步测量胃排空的研究，以评估超声在测量胃排空率方面的应用。14名受试者中有3名因胃内存在气体而无法通过超声获取胃排空数据。在其余11名受试者中，闪烁扫描法获得的胃排空半衰期（t1/2）值[前位显像时，平均t1/2 = 20.9 +/- 9.9分钟（+/-标准差）；前后位显像时，几何平均t1/2 = 21.1 +/- 10.5分钟（+/-标准差）]与超声测量值[平均t1/2 = 20.2 +/- 10.0分钟（+/-标准差），每次比较p均大于0.05]之间无显著差异。闪烁扫描法（前位扫描以及前后位扫描获得的计数几何平均值）得出的胃排空t1/2与超声测量的t1/2之间存在显著相关性（r2分别为0.7和0.69）。这些结果表明，超声可用于有效评估人体胃排空率。
