[1] Scintigraphy that uses gamma cameras to create two-dimensional images is generally regarded as the gold standard for gastric emptying.

[2][3] Having fasted for around four hours before the study, the patient is given a solid or semi-solid meal, such as scrambled eggs on toast or porridge, which has been prepared with a radiopharmaceutical component.

[4][1][5] Some studies may also involve a liquid component, which is labelled with indium-111 DTPA.

[5] Images are acquired with a gamma camera, initially dynamically and then at intervals for up to 2-3 hours.

[1][5][6] The stomach time-activity curve is produced from geometric mean of anterior and posterior imaging.