Table 2.
Detection of coronary artery stenosis during dobutamine stress MRI.
| Sensitivity | Specificity | Accuracy | |
|---|---|---|---|
| Assessment by coronary vessels (n=303) | |||
| Cine images (all vessels) | 70% (71/101) | 96% (194/202) | 87% (265/303) |
| Single-vessel CAD (32 diseased vessels) | 88% (28/32) | 94% (60/64) | 92% (88/96) |
| Multi-vessel CAD (69 diseased vessels) | 62% (43/69) | 100% (27/27) | 73% (70/96) |
| SENC (all vessels) | 85%† (86/101) | 94% (189/202) | 91%* (275/303) |
| Single-vessel CAD (32 diseased vessels) | 97% (31/32) | 97% (62/64) | 97% (93/96) |
| Multi-vessel CAD (69 diseased vessels) | 80% (55/69) | 81% (22/27) | 80% (77/96) |
| Assessment by patients (n=101) | |||
| Cine imaging (all patients) | 86% (55/64) | 92% (34/37) | 88% (89/101) |
| Patients with resting WMA by cine (n=25) | 83% (20/24) | 100% (1/1) | 84% (21/25) |
| Patients without resting WMA by cine (n=76) | 86% (35/40) | 92% (33/36) | 89% (68/76) |
| SENC (all patients) | 98%* (63/64) | 86% (32/37) | 94% (95/101) |
| Patients with resting WMA by cine (n=25) | 100% (24/24) | 100% (1/1) | 100% (25/25) |
| Patients without resting WMA by cine (n=76) | 98% (39/40) | 86% (31/36) | 92% (70/76) |
Data are presented as number of patients or percentages.
*
p<0.05 and
†
p<0.01 for Strain-encoded MRI versus wall motion analysis on cine images (by Mc-Nemar χ2-square test).