title: Mean transit time of solid test meals in gastric emptying.
abstract: Gastric emptying of a test meal labelled with 99Tcm-sulphur colloid has been studied in 9 healthy volunteers using a gamma-camera with on-line computer. Mean transit time (MTT) was determined by fitting the time-activity histogram to a gamma-variate, and the half-time of emptying (T1/2) was calculated by exponential fitting of the down-slope of the time-activity curve. MTT showed a smaller coefficient of variance than T1/2. This result suggests that MTT may be a more suitable parameter for definition of normal values and for the separation of normal from pathological patterns of emptying.
mesh_terms: D000328:Adult; D005502:Food; D005769:Gastrointestinal Motility; D006801:Humans; D008297:Male; D013270:Stomach / Q000502:physiology*; D013667:Technetium
chemical_list: D013667:Technetium