title: Measurements of gastric emptying of low- and high-nutrient liquids using 3D ultrasonography and scintigraphy in healthy subjects.
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 (99m)Tc-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.
authors.affiliation: Royal Adelaide Hospital, University of Adelaide, Adelaide, SA, Australia.
authors.forename: D
authors.initials: D
authors.lastname: Gentilcore
authors.forename: T
authors.initials: T
authors.lastname: Hausken
authors.forename: M
authors.initials: M
authors.lastname: Horowitz
authors.forename: K L
authors.initials: KL
authors.lastname: Jones
mesh_terms: D000328:Adult; D004435:Eating; D005260:Female; D005746:Gastric Emptying / Q000502:physiology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D011877:Radionuclide Imaging / Q000379:methods*; D019275:Radiopharmaceuticals; D013270:Stomach / Q000000981:diagnostic imaging*; D013671:Technetium Tc 99m Sulfur Colloid; D014463:Ultrasonography / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D013671:Technetium Tc 99m Sulfur Colloid