Table 4 Parameters of T1 and T2 mapping in healthy Chinese adults by age
|  | 19–39 years (n = 467) | 40–59 years (n = 425) | ≥ 60 years (n = 123) | P value |
|---|---|---|---|---|
T1 value (ms) | ||||
Base | 1192.4 ± 32.7 (1127.1–1257.8) | 1196.2 ± 38.2 (1119.7–1272.6) | 1205.1 ± 37.1 (1131.0–1279.2) | 0.966 |
Middle | 1186.1 ± 37.9 (1110.4–1261.8) | 1185.4 ± 39.1 (1107.2–1263.7) | 1191.4 ± 42.7 (1106.1–1276.7) | 0.030 |
Apex | 1204.2 ± 42.9 (1118.4–1290.0) | 1198.6 ± 48.4 (1101.8–1295.4) | 1200.8 ± 50.0 (1100.7–1300.9) | 0.262 |
Global | 1192.6 ± 32.1 (1128.4–1256.7) | 1192.3 ± 35.4 (1121.5–1263.0) | 1198.7 ± 37.0 (1124.6–1272.7) | 0.178 |
Septum | 1201.1 ± 40.1 (1120.8–1281.4) | 1200.0 ± 42.2 (1115.6–1284.4) | 1211.6 ± 48.1 (1115.4–1307.9) | 0.156 |
T2 value (ms) | ||||
Base | 35.1 ± 2.7 (29.8–40.5) | 36.0 ± 2.4 (31.2–40.8) | 36.8 ± 2.5 (31.8–41.7) | < 0.001 |
Middle | 35.3 ± 2.8 (29.7–40.9) | 36.2 ± 2.5 (31.1–41.2) | 37.0 ± 2.7 (31.6–42.4) | < 0.001 |
Apex | 35.9 ± 3.1 (29.6–42.2) | 36.9 ± 2.9 (31.0–42.7) | 37.5 ± 2.8 (31.9–43.1) | 0.099 |
Global | 35.4 ± 2.6 (30.2–40.6) | 36.2 ± 2.3 (31.6–40.9) | 37.0 ± 2.4 (32.2–41.8) | < 0.001 |
Septum | 35.8 ± 3.1 (29.6–42.0) | 36.5 ± 2.8 (30.9–42.2) | 37.3 ± 2.8 (31.6–43.0) | < 0.001 |