Findings from CTA, SPECT MPI, and ICA for 17 Patients and Interobserver Agreement for Fused Interpretation with SMARTVis System in Comparison with Side-by-Side Interpretation
| CTA findings | SPECT MPI/MPI findings | |||||||||
| Patient no. | Sex | Age (y) | Agatston score | ≥50% stenosis in segment | Reversible | Fixed | QCA finding of ≥20% stenosis in… | CTA suspected | SPECT MPI suspected | Interobserver agreement* |
| 1 | M | 46 | 60.6 | Inferior | NA | No | Single | = | ||
| 2 | M | 55 | 9.9 | Anterior-anteroseptal mid | Inferior-inferolateral mid-apical | No | Double | = | ||
| 3 | M | 63 | 15.6 | Anterior + anterolateral + apex | NA | No | Double | = | ||
| Inferior + inferoseptal | ||||||||||
| 4 | M | 70 | 1,932.5 | 8 | Inferior + inferolateral apical | 8 (100%) | Single | Single | = | |
| 5 | M | 53 | 0 | 6, 14 | Anteroseptal mid | NA | Double | Double | + | |
| Inferolateral mid-basal | ||||||||||
| 6 | M | 59 | 1,676.9 | 3, 10, 12, 13, 14 | Anterior | Inferior + inferoseptal | NA | Triple | Triple | − |
| Antero/inferolateral | ||||||||||
| 7 | M | 65 | 315.4 | 6, 13, 16 | Anterior mid-basal | Inferior | NA | Double | Triple | + |
| Antero/inferolateral apical | ||||||||||
| Antero/inferoseptal basal | ||||||||||
| 8 | M | 61 | 819.6 | 11 | Anterior basal-mid, inferior mid-apical | 5 (38%), 6 (46%), 11 (63%) | Single | Double | + | |
| 9 | M | 60 | 493.8 | 4, 12, 13, 16 | Antero/inferolateral apical | NA | Double | Single | = | |
| 10 | F | 81 | NA | 2, 4, 16, 17 | Anterior + anteroseptal | NA | Double | Single | + | |
| 11 | M | 68 | 962.3 | 1, 6, 8, 9 | Anterolateral mid | NA | Double | Single | + | |
| 12 | M | 60 | 373.8 | 1, 2, 6, 7, 14 | Inferior | 1 (52%), 5 (26%), 7 (41%), 12 (38%), 14 (58%) | Triple | Single | + | |
| 13 | M | 73 | 2,840.5 | 1, 2, 3, 7, 8, 9, 10, 11, 12 | Inferior midapical | NA | Triple | Single | = | |
| 14 | F | 49 | 109.3 | 4, 7, 8, 9, 13 | Anterior apical | NA | Triple | Single | − | |
| 15 | M | 56 | 4,797.4 | 3, 4, 8, 9, 11, 12, 13 | Anterolateral basal | Inferior | 3 (53%), 12 (51%), 13 (70%) | Triple | Double | = |
| 16 | M | 59 | NA | 1, 2, 6, 7, 9, 12, 16 | Inferior + inferoseptal | 1 (100%), 6 (50%) | Triple | Double | + | |
| Anterior + anteroseptal | + | |||||||||
| 17 | M | 58 | 727.8 | 4, 7, 8, 9, 11, 13, 16 | Antero/inferolateral mid-basal | Inferior + inferoseptal | 1 (40%), 2 (76%), 7 (46%), 13 (70%), 16 (58%) | Triple | Double | = |
*+ indicates improvement; =, same; and −, worse.
NA = not applicable.
Coronary segment numbering: 1 = proximal RCA; 2 = mid RCA; 3 = distal RCA; 4 = posterior descending; 5 = left main; 6 = proximal LAD; 7 = mid LAD; 8 = distal LAD; 9 = diagonal branch 1; 10 = diagonal branch 2; 11 = proximal LCX; 12 = marginal branch 1; 13 = mid LCX; 14 = marginal branch 2; 15 = distal LCX; 16 = intermediate branch.