Gastric emptying study
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Gastric emptying scan
)| Gastric emptying study | |
|---|---|
Example gastric emptying images | |
| Synonyms | Gastric emptying sccan, gastric emptying scintigraphy |
| ICD-10-PCS | CD171ZZ |
| OPS-301 code | 3-707 |
| LOINC | 39768-7 |
A gastric emptying study is a
gastric reflux, or suspected gastroparesis amongst other indications.[1] Scintigraphy that uses gamma cameras to create two-dimensional images is generally regarded as the gold standard for gastric emptying.[2][3]
Procedure
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
DTPA is used.[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]
Analysis
The stomach time-activity curve is produced from geometric mean of anterior and posterior imaging. Half-emptying time, the lag-phase duration for solid studies, and percentage of food left at various time points are calculated.[7]
References
- ^ a b c "Gastric Emptying Guideline" (PDF). BNMS. March 2015.
- S2CID 24056361.
- PMID 20431741.
- ISBN 9783540339908.
- ^ PMID 19692450.
- PMID 21602998.
- ISBN 9780702054792. Retrieved 22 December 2020.