Aeberhard P, Steudler G, Noelpp U, Rösler H
Digestion. 1977;15(5):361-72. doi: 10.1159/000198024.
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.
使用配备在线计算机的γ相机，对9名健康志愿者进行了标记有99锝-硫胶体的试验餐胃排空研究。通过将时间-活性直方图拟合为γ变量来确定平均通过时间（MTT），并通过对时间-活性曲线下降段进行指数拟合来计算排空半衰期（T1/2）。MTT的变异系数比T1/2小。该结果表明，MTT可能是用于定义正常值以及区分正常排空模式与病理排空模式的更合适参数。
