Table 2 Descriptive statistics of gastric emptying scintigraphy for standardized egg-white solid-meal labeled with 99mTc-SC and 99mTc-SP
Radiotracer | Parameters | Normative valuesa | Median (IQR) | Mean (SD) | 95% CI of Mean | Normality | ||
|---|---|---|---|---|---|---|---|---|
90th percentile (90% CI) | 95th percentile (90% CI) | |||||||
99mTc-SC | Total gastric meal retention | 0.5 h. (%) | 91.7 (88.9–94.3) | 94.0 (91.0–96.2) | 82.0 (11.0) | 81.3 (7.7) | 78.5–84.1 | P = 0.891 |
1 h. (%) | 83.2 (78.9–86.9) | 86.6 (82.8–90.2) | 65.0 (25.0) | 62.3 (16.2) | 56.3–68.2 | P = 0.251 | ||
2 h. (%) | 60.2 (48.8–64.8) | 64.4 (57.9–69.1) | 25.0 (29.0) | 28.7 (19.8) | 21.4–36.0 | P = 0.019b | ||
3 h. (%) | 26.9 (15.9–30.8) | 29.9 (25.4–33.5) | 5.0 (6.0) | 9.2 (9.4) | 5.7–12.7 | P < 0.001b | ||
4 h. (%)c | 7.4 (5.0–11.2) | 9.9 (6.4–14.0) | 2.0 (3.0) | 3.1 (3.1) | 2.0–4.2 | P < 0.001b | ||
Linear-fit Solid T1/2 | T1/2 (min.) | 127.2 (121.3–131.5) | 130.5 (124.9–134.0) | 105.9 (13.1) | 109.4 (10.8) | 105.4–113.3 | P < 0.001b | |
99mTc-SP | Total gastric meal retention | 0.5 h. (%) | 94.1 (90.8–96.9) | 96.6 (93.2–99.0) | 85.0 (10.0) | 83.3 (8.3) | 80.3–86.3 | P = 0.385 |
1 h. (%) | 83.8 (80.3–86.3) | 86.4 (82.8–89.1) | 70.0 (20.0) | 67.1 (14.3) | 61.9–72.3 | P = 0.063 | ||
2 h. (%) | 52.4 (47.8–55.2) | 55.8 (51.4–58.8) | 31.0 (30.0) | 29.9 (16.9) | 23.7–36.1 | P = 0.038b | ||
3 h. (%) | 21.6 (17.8–27.5) | 26.3 (20.6–31.1) | 7.0 (14.0) | 10.2 (8.2) | 7.2–13.2 | P = 0.015b | ||
4 h. (%)c | 8.8 (6.5–10.5) | 10.3 (7.9–11.3) | 3.0 (4.0) | 4.0 (2.9) | 2.9–5.1 | P < 0.001b | ||
Linear-fit Solid T1/2 | T1/2 (min.) | 123.7 (119.1–130.0) | 128.4 (122.1–132.9) | 109.2 (13.9) | 110.2 (9.6) | 106.7–113.7 | P = 0.084 | |