From the various investigations of gastric emptying described in the literature, radionuclide labelling of meals appears to provide the most suitable technique. The emptying patterns of different 99mTc-DTPA carriers were studied in healthy volunteers, compared with patterns found after ingestion of a fried egg incorporating 99mTc-serum albumin. The results are described and discussed. They seen to suggest that there are different modalities of gastric emptying when different meals and markers are used.
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