Principle: The radiopharmaceutical is mixed into the diet and administered per os to the patient. The motility and gastric emptying capacity are monitored. Indication: Functional gastric disorders Patient preparation: fasting discontinue medications promoting gastric function diet (risotto) Duration of examination: approx. 1.5 hours Radiopharmaceutical: 99mTc – colloid Method of application: Oral Examination methodology: The radiopharmaceutical is mixed into the patient’s diet. After eating it, the patient lies down on the gammacamera table and we focus the device on the abdominal area. We start a dynamic study that lasts about 60 minutes and monitor gastric activity. At the end of the study, we take a 2-minute static image of the patient. We then repeat this static image at approximately hourly intervals as needed. In between scans, the patient cannot eat and only takes fluids.