Facts: Gastric Emptying Scintigraphy
- Performed to evaluate patients with symptoms suggesting alteration of gastric emptying or motility
- Provide physiologic, noninvasive, quantitative measurement of solid or liquid gastric emptying
- Used to diagnose delayed gastric emptying (ie, gastroparesis) or rapid emptying (dumping syndrome)
Factors affecting gastric emptying (potentially creating false-positive or false-negative tests)
- Medications: prokinetics (shorten gastric emptying), narcotic analgesics (prolong gastric emptying)
- Tobacco smoking (prolong gastric emptying)
- Hyperglycemia (prolong gastric emptying)
- Premenopausal status (prolong gastric emptying)
Standards for performing GES as recommended by Society of Nuclear Medicine (SNM)
- Full recommendation paper (link) provides recommended timing of imaging, composition of meal, glycemic control, monitoring of symptoms and assessment of severity
- Low-fat, egg white meal
- Imaging at a minimum at 0,1,2 and 4 hours after radiolabeled meal ingestion
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