Overview

The Gastric Emptying Study demonstrates the movement of an ingested bolus of solid and/or liquid from the stomach into the small intestine.

Indications

• Diagnosis of functional gastric dysmotility.

Study Description

After an overnight fasting period the patient is taken to the imaging area and fed a radioactive meal consisting of 2 scrambled eggs labeled with Tc-99m Sulfur Colloid, two slices of white bread (generally toasted) with 30g jelly (Strawberry or grape-usually 2 small packets of Smucker’s jelly (Net wt ½ oz (14g)), and 4-6 ounces of water. (If the patient is unable to ingest eggs, oatmeal can be substituted.) Images are taken immediately for 1 ½ hours after ingestion (optional 4 hour protocol).

Examination Time

• Approximately 2-4 hours (optional 4 hour protocol)
• Initially 30 minutes for meal preparation and ingestion of test meal
• 90 minute protocol: 90 minutes of continuous imaging
• 4 hour protocol: Imaging immediately followed by 1 minute images at 1,2,3, and 4 hours

Patient Preparation

• Ensure the patient is not pregnant or breastfeeding.
• NPO (nothing by mouth) for a minimum of 6 hours prior to exam
• No BARIUM studies for 48 hours prior to exam
• The study should be done in the morning. Start no later than 10 a.m. because the gastric emptying time varies with the time of day.