Double contrast examination of the stomach compared with endoscopy.

The results of the double examination of the stomach in a series of 102 patients were compared with the findings at endoscopy. Nasogastric intubation was used to introduce the air into the stomach. Hypotonia was achieved mainly with glucagon. The radiologic error rate was 10 per cent, consisting of 7 per cent false negative and 3 per cent false positive findings. The diagnostic advantages of the double contrast technique over those of the conventional barium examination are discussed.