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目的评价胃磁示踪法测定胃排空的准确性,作胃磁示踪法与闪烁显像法测定胃排空的对比观察。方法志愿者37名,同体同步作两种胃排空检测方法检查,即同时在试餐中加入37 MBq的~(99)mTC-DTPA及2g磁示踪剂(Fe_3O_4),进食后同时用γ照相机测放射性衰减及磁场衰减情况。对两种测定方法的结果作比较。结果同位素闪烁显像法所测37例胃半排空时间T_(1/2)为69.3min,用胃磁示踪法测定的T_(1/2)为67.2 min(P>0.01),无显著差异。结论胃磁示踪法测定胃排空时间与胃排空时间检测金标准的闪烁显像法对比,数据非常接近。证明磁示踪法检测胃排空是一种准确可靠而又临床适用的方法。
Objective To evaluate the accuracy of gastroscopy in gastric emptying and to compare gastric emptying with gastroscopy and scintigraphy. Methods Thirty-seven volunteers were randomly divided into two groups: gastric emptying test (37 MBq ~ 99mTC-DTPA and 2g magnetic tracer (Fe 3 O 4)) Camera measured radioactive attenuation and magnetic field attenuation. The results of the two assays were compared. Results The T_ (1/2) T_ (1/2) of 37 patients with gastric emptying time was 69.3 minutes, and T_ (1/2) was 67.2 minutes (P> 0.01) by gastroscopy. There was no significant difference difference. Conclusion The gastroscopy method to measure the gastric emptying time and gastric emptying time gold standard scintigraphy contrast, the data is very close. It is proved that magnetic tracer method to detect gastric emptying is an accurate, reliable and clinically applicable method.