Abstract
The application of external scintigraphy and preparation of a new radiopharmaceutical agent for the investigation of the rate and pattern of gastric emptying in beagles and for the visualization of segments of the intestines have been described. 99mTc-labeled triethylenetetramine-polystyrene resin was mixed in a test meal and was administered to the animal. The gastric emptying rate of the beagle was evaluated by serially recording the gastric radioactivity by means of a scintillation camera, The experimental data indicate that the pattern of gastric emptying of beagles during the first 60 min was monoexponential and the gastric emptying half time was 1.3 h. The usefulness of external scintigraphy as a noninvasive method for determining the gastric emptying rates and for visualizing segments of GI tract in animals has been demonstrated.
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