IngentaConnect Measurements of gastric emptying of low- and high-nutrient liquid...

Authors: gentilcore, d.¹; hausken, t.²; horowitz, m.¹; jones, k. l.¹

Source: Neurogastroenterology and Motility, Volume 18, Number 12, December 2006 , pp. 1062-1068(7)

Abstract:

Scintigraphy represents the `gold standard' for the measurement of gastric emptying. Recent studies suggest that three-dimensional (3D) ultrasonography may allow a precise measure of gastric emptying, given the capacity for accurate volume calculations of the stomach. The aim of this study was to compare measurements of gastric emptying of both low- and high-nutrient drinks by 3D ultrasonography with scintigraphy. Ten healthy young subjects (6M, 4F, age 23.5 ± 1.5 years) were studied on 2 days. Concurrent measurements of gastric emptying by scintigraphy and 3D ultrasonography were performed after ingestion of 500 mL beef soup (12 kcal) or 300 ml dextrose (25% w/v) (314 kcal) labelled with 20 MBq ^99mTc-sulphur colloid. There was no significant difference between scintigraphic and ultrasonographic 50% emptying times (T50s) (soup: 27.7 ± 4.8 min vs 23.8. ± 4.8 min; dextrose: 122.2 ± 13.3 min vs 131.9 ± 10.2 min). There was a close correlation between scintigraphic and ultrasonographic T50s for both soup (r = 0.92, P = 0.0005) and dextrose (r = 0.88, P = 0.0007). For the T50s, the limits of agreement were −15.2 min and +8.1 min for the soup (mean difference −3.6 min) and −35.3 min and +47.6 min for dextrose (mean difference +6.2 min). 3D ultrasonography provides a valid measure of gastric emptying of liquid meals in healthy subjects.

Keywords: gastric emptying; imaging; scintigraphy; three-dimensional; two-dimensional; ultrasound

Document Type: Research article

DOI: 10.1111/j.1365-2982.2006.00830.x

Affiliations: 1: Discipline of Medicine, Royal Adelaide Hospital, University of Adelaide, Adelaide, SA, Australia 2: Institute of Medicine, Division of Gastroenterology, Haukeland University Hospital, University of Bergen, Bergen, Norway

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Measurements of gastric emptying of low- and high-nutrient liquids using 3D ultrasonography and scintigraphy in healthy subjects