Table 3 Diagnostic performance of 3T non-contrast whole-heart coronary MRA at diastole and systole in 76 patients
Method | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|
Per patient | |||||
 At diastole | 97.5 (39/40) | 63.9 (23/36) | 75.0 (39/52) | 95.8 (23/24) | 81.6 (62/76) |
 At systole | 97.5 (39/40) | 75.0 (27/36) | 81.3 (39/48) | 96.4 (27/28) | 86.8 (66/76) |
 Combined | 97.5 (39/40) | 83.3 (30/36) | 86.7 (39/45) | 96.8 (30/31) | 90.8 (69/76) |
 Intergroups P value* | > 0.99 | 0.016 | NA | NA | 0.016 |
 Adjusted P valuea | NA | 0.307 | NA | NA | 0.307 |
 Adjusted P valueb | NA | 0.013 | NA | NA | 0.013 |
 Adjusted P valuec | NA | 0.662 | NA | NA | 0.662 |
Per vessel | |||||
 At diastole | 92.5 (62/67) | 83.9 (135/161) | 70.5 (62/88) | 96.4 (135/140) | 86.4 (197/228) |
 At systole | 91.0 (61/67) | 84.5 (136/161) | 70.9 (61/86) | 95.8 (136/142) | 86.4 (197/228) |
 Combined | 88.1 (59/67) | 92.6 (149/161) | 83.1 (59/71) | 94.9 (149/157) | 91.2 (208/228) |
 Intergroups P value* | 0.174 | 0.001 | NA | NA | < 0.001 |
 Adjusted P valuea | NA | > 0.99 | NA | NA | > 0.99 |
 Adjusted P valueb | NA | 0.003 | NA | NA | 0.001 |
 Adjusted P valuec | NA | 0.007 | NA | NA | 0.003 |
Per segment | |||||
 At diastole | 86.3 (88/102) | 93.4 (796/852) | 61.1 (88/144) | 98.3 (796/810) | 92.7 (884/954) |
 At systole | 84.3 (86/102) | 94.8 (808/852) | 66.2 (86/130) | 98.1 (808/824) | 93.7 (894/954) |
 Combined | 81.4 (83/102) | 97.3 (829/852) | 78.3 (83/106) | 97.8 (829/848) | 95.6 (912/954) |
 Intergroups P value* | 0.093 | < 0.001 | NA | NA | < 0.001 |
 Adjusted P valuea | NA | 0.137 | NA | NA | 0.088 |
 Adjusted P valueb | NA | < 0.001 | NA | NA | < 0.001 |
 Adjusted P valuec | NA | 0.001 | NA | NA | 0.001 |