Table 4 Test-retest reliability, interrater and intrarater agreement for individual mid-ventricular myocardial segments
Parameter | Study 1 | Study 2 | CoV | ICC (95% CI) | Bias ± SD of bias | BA Limits of Agreement |
|---|---|---|---|---|---|---|
Rest native T1 test-retest reliability (n = 10) | ||||||
 S1 | 1257 ± 56 | 1230 ± 56 | 2.6% | 0.37 (−0.23–0.79) | 26.1 ± 62.3 | − 96.0; 148.2 |
 S2 | 1232 ± 39 | 1226 ± 42 | 1.3% | 0.69 (0.14–0.91) | 5.4 ± 32.8 | − 58.9; 69.7 |
 S3* | 1241 ± 38 | 1233 ± 33 | 1.2% | 0.66 (0.08–0.91) | 8.8 ± 29.4 | 48.8; 66.4 |
 S4 | 1275 ± 57 | 1268 ± 48 | 2.0% | 0.51 (− 0.17–0.85) | 7.3 ± 53.2 | − 96.9; 111.5 |
 S5 | 1292 ± 50 | 1291 ± 44 | 0.9% | 0.87 (0.54–0.97) | 1.2 ± 26.7 | − 49.1; 51.5 |
 S6 | 1303 ± 54 | 1282 ± 47 | 2.4% | 0.27 (− 0.37–0.74) | 20.7 ± 61.2 | − 99.2; 140.6 |
Stress native T1 test-retest reliability (n = 9) | ||||||
 S1** | 1300 ± 43 | 1269 ± 40 | 2.2% | 0.24 (− 0.31–0.75) | 31.5 ± 49.8 | −66.1; 129.1 |
 S2** | 1266 ± 46 | 1229 ± 69 | 3.7% | − 0.19 (0.74–0.54) | 37.0 ± 90.8 | − 141.0; 215.0 |
 S3 | 1298 ± 68 | 1262 ± 31 | 2.8% | 0.19 (0.36–0.71) | 35.7 ± 66.5 | −94.8; 166.1 |
 S4 | 1322 ± 56 | 1304 ± 86 | 3.0% | 0.41 (− 0.33–0.83) | 17.4 ± 80.4 | −140.1; 175.0 |
 S5 | 1326 ± 40 | 1345 ± 76 | 2.3% | 0.50 (− 0.17–0.86) | −18.2 ± 61.1 | − 138.0; 101.6 |
 S6 | 1353 ± 53 | 1337 ± 41 | 1.8% | 0.48 (− 0.18–0.85) | 15.9 ± 47.9 | −78.1; 109.8 |
Rest native T1 interrater agreement (n = 15) | ||||||
 S1 | 1259 ± 47 | 1257 ± 46 | 0.4% | 0.98 (0.94–0.99) | 1.8 ± 9.4 | − 16.6; 20.2 |
 S2 | 1238 ± 33 | 1240 ± 33 | 0.7% | 0.86 (0.67–0.96) | 1.6 ± 17.0 | − 34.8; 31.6 |
 S3 | 1237 ± 37 | 1237 ± 30 | 0.4% | 0.96 (0.89–0.99) | −0.6 ± 9.9 | − 20.0; 18.8 |
 S4 | 1269 ± 50 | 1273 ± 51 | 0.4% | 0.98 (0.94–1.00) | − 4.5 ± 8.4 | − 21.0; 12.1 |
 S5 | 1294 ± 42 | 1296 ± 38 | 0.3% | 0.98 (0.94–0.99) | −2.2 ± 8.3 | − 18.4; 14.0 |
 S6 | 1300 ± 44 | 1301 ± 42 | 0.4% | 0.97 (0.91–0.99) | −1.1 ± 11.4 | − 23.4; 21.2 |
Stress native T1 interrater agreement (n = 15) | ||||||
 S1 | 1307 ± 52 | 1304 ± 66 | 1.0% | 0.91 (0.76–0.97) | 2.9 ± 25.7 | − 47.5; 53.4 |
 S2 | 1280 ± 57 | 1283 ± 57 | 0.4% | 0.99 (0.96–1.00) | −2.8 ± 9.8 | −22.0; 16.4 |
 S3 | 1291 ± 59 | 1296 ± 64 | 0.5% | 0.98 (0.93–0.99) | − 5.3 ± 12.2 | −29.1; 18.6 |
 S4 | 1312 ± 57 | 1316 ± 59 | 0.3% | 0.99 (0.96–1.00) | −4.2 ± 8.4 | −20.7; 12.3 |
 S5 | 1329 ± 47 | 1326 ± 41 | 0.3% | 0.98 (0.94–0.99) | 3.2 ± 8.8 | − 14.0; 20.4 |
 S6 | 1339 ± 49 | 1344 ± 49 | 0.4% | 0.97 (0.92–0.99) | −5.0 ± 10.3 | − 25.2; 15.2 |
ΔT1 interrater agreement (n = 15) | ||||||
 S1 | 3.8 ± 2.8 | 3.7 ± 3.1 | 29.8% | 0.72 (0.34–0.90) | 0.1 ± 2.3 | −4.4; 4.6 |
 S2 | 3.4 ± 3.7 | 3.5 ± 3.2 | 24.4% | 0.88 (0.68–0.96) | − 0.1 ± 1.8 | − 3.5; 3.4 |
 S3 | 4.4 ± 3.7 | 4.7 ± 4.2 | 10.1% | 0.97 (0.92–0.99) | − 0.4 ± 0.9 | − 2.1; 1.4 |
 S4 | 3.4 ± 2.1 | 3.4 ± 2.7 | 12.5% | 0.94 (0.83–0.98) | 0.0 ± 0.9 | − 1.7; 1.7 |
 S5 | 2.7 ± 2.0 | 2.3 ± 1.7 | 14.0% | 0.93 (0.71–0.98) | 0.4 ± 0.6 | − 0.7; 1.6 |
 S6 | 3.1 ± 2.0 | 3.4 ± 1.7 | 12.5% | 0.91 (0.76–0.97) | −0.3 ± 0.8 | − 1.8; 1.2 |
Rest native T1 intrarater agreement (n = 15) | ||||||
 S1 | 1259 ± 47 | 1257 ± 49 | 0.3% | 0.99 (0.97–1.00) | 2.1 ± 7.0 | − 11.6; 15.9 |
 S2 | 1238 ± 33 | 1238 ± 36 | 0.3% | 0.98 (0.95–0.99) | 0.3 ± 6.4 | − 12.3; 12.9 |
 S3 | 1237 ± 37 | 1235 ± 34 | 0.3% | 0.98 (0.95–0.99) | 1.4 ± 6.5 | −11.4; 14.2 |
 S4 | 1269 ± 50 | 1274 ± 46 | 0.5% | 0.97 (0.91–0.99) | − 4.7 ± 11.0 | −26.3; 16.8 |
 S5 | 1294 ± 42 | 1298 ± 41 | 0.4% | 0.97 (0.92–0.99) | −4.1 ± 8.9 | −21.5; 13.4 |
 S6 | 1300 ± 44 | 1295 ± 40 | 0.4% | 0.96 (0.90–0.99) | 4.4 ± 10.8 | − 16.8; 25.6 |
Stress native T1 intrarater agreement (n = 15) | ||||||
 S1 | 1307 ± 52 | 1306 ± 68 | 0.9% | 0.93 (0.79–0.98) | 0.7 ± 24.2 | −46.7; 48.1 |
 S2 | 1280 ± 57 | 1280 ± 59 | 0.3% | 0.99 (0.97–1.00) | 0.5 ± 9.2 | −17.6; 18.6 |
 S3 | 1291 ± 59 | 1294 ± 61 | 0.3% | 0.99 (0.98–1.00) | − 3.2 ± 6.5 | − 15.9; 9.5 |
 S4 | 1312 ± 57 | 1317 ± 58 | 0.5% | 0.97 (0.92–0.99) | −5.5 ± 12.5 | −30.0; 19.1 |
 S5 | 1329 ± 47 | 1328 ± 39 | 0.5% | 0.95 (0.86–0.98) | 1.1 ± 14.0 | − 26.3; 28.6 |
 S6 | 1339 ± 49 | 1342 ± 50 | 0.4% | 0.97 (0.92–0.99) | −2.4 ± 11.9 | − 25.6; 20.8 |
ΔT1 intrarater agreement (n = 15) | ||||||
 S1 | 3.8 ± 2.8 | 3.9 ± 2.8 | 22.5% | 0.84 (0.59–0.94) | − 0.1 ± 1.8 | − 3.6; 3.4 |
 S2 | 3.4 ± 3.7 | 3.4 ± 3.4 | 12.3% | 0.97 (0.92–0.99) | 0.0 ± 0.9 | − 1.7; 1.7 |
 S3 | 4.4 ± 3.7 | 4.7 ± 3.7 | 9.6% | 0.97 (0.92–0.99) | −0.4 ± 0.8 | − 2.0; 1.3 |
 S4 | 3.4 ± 2.1 | 3.4 ± 1.8 | 10.7% | 0.93 (0.81–0.98) | 0.0 ± 0.8 | −1.5; 1.5 |
 S5 | 2.7 ± 2.0 | 2.3 ± 1.8 | 20.1% | 0.86 (0.63–0.95) | 0.4 ± 1.0 | −1.5; 2.3 |
 S6 | 3.1 ± 2.0 | 3.6 ± 2.5 | 23.1% | 0.76 (0.47–0.92) | − 0.5 ± 1.5 | −3.5; 2.4 |