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为了评价胃磁示踪法测定胃生物半排期的准确性,我们应用闪烁显像及胃磁示踪两种方法同时对37例患者进行了胃生物半排期(T1/2)的测定。闪烁显像的示踪剂为~(99)Tc-DTPA,胃磁示踪法用四氧化三铁。由闪烁显像测定的T1/2为69.3min,由胃磁示踪法测定的为67.2min,两法的T1/2之间无显著性差异(P>0.1)。结果提示胃磁示踪法可以代替闪烁显像测定胃排空时问。本文还对胃磁示踪法使用过程中的干扰因素进行了讨论。
In order to evaluate the accuracy of gastro-magnetic tracer method for the determination of half-life of gastric biopsy, we used scintigraphy and gastric magnetic tracing to simultaneously determine the gastric bio-hemi-selection (T1/2) in 37 patients. The tracer for scintigraphy is ~(99)Tc-DTPA, and the magnetic tracer method uses triiron tetroxide. The T1/2 measured by scintigraphy was 69.3 minutes, and it was 67.2 minutes measured by the magnetic magnetic tracer method. There was no significant difference between the two methods (P>0.1). The results suggest that gastric magnetic tracing can be used instead of scintigraphy to measure gastric emptying time. This article also discusses the interference factors in the use of gastric magnetic tracer method.