Characteristics | SPECT/CT dataset | Supine/Prone dataset | SPECT/Angio dataset | Normalcy dataset |
---|---|---|---|---|
Number | 24 | 20 | 60 | 20 |
Age (years) | 56.5 ± 8.6 (41–69) | 60.9 ± 10.9 (37–83) | 61.9 ± 10.1 (36–90) | 56.7 ± 11.5 (39–80) |
Male sex | 9 (37%) | 14 (70%) | 32 (53%) | 7 (35%) |
Risk factors | ||||
Obesity | 5 (21%) | 4 (20%) | 18 (30%) | 3 (15%) |
Diabetes mellitus | 7 (29%) | 4 (20%) | 21 (35%) | 0 |
Hypertension | 13 (54%) | 9 (45%) | 44 (73%) | 0 |
Hyperlipidemia | 8 (33%) | 6 (30%) | 23 (38%) | 0 |
CKD | 1 (4%) | 0 (0%) | 1 (2%) | 0 |
Current smoker | 5 (21%) | 3 (15%) | 16 (27%) | 0 |
Family history | 3 (12%) | 2 (10%) | 15 (25%) | 4 (20%) |
Stress protocol | ||||
Dipyridamole stress protocol | 24 (100%) | 20 (100%) | 58 (97%) | 20 (100%) |
Dobutamine stress protocol | 0 | 0 | 2 (2%) | 0 |
Maximum heart rate | 88.2 ± 10.2 (71–103) | 84.7 ± 15.2 (62–115) | 94.5 ± 14.4 (65–133) | 99.25 ± 15.3 (82–131) |
Interpretation of MPI throughout the LV myocardium | ||||
Negative for appreciable ischemia | 7 (29%) | 13 (65%) | 24 (30%) | 20 (100%) |
Mild-to-moderate ischemia | 11 (46%) | 6 (30%) | 25 (31%) | 0 |
Severe ischemia | 6 (25%) | 1 (5%) | 28 (35%) | 0 |
MI; MI + ischemia | 0 | 0 | 3; 3 (7%) | 0 |
Normal function | 21 (87%) | 18 (90%) | 46 (57%) | 0 |
Stress EDV (ml) | 84.3 ± 21.6 (28–215) | 105 ± 36.9 (48–204) | 78.1 ± 38.5 (22–224) | 76.2 ± 13.14 (62–99) |
Stress ESV (ml) | 34.1 ± 8.1 (9–48) | 37.7 ± 21.8 (6–90) | 32.7 ± 26.2 (6–138) | 24.25 ± 7.49 (13–73) |
Stress EF (ml) | 63.2 ± 4.9 (23–85) | 65.4 ± 8.9 (46–75) | 56.9 ± 23.0 (4–85) | 68.6 ± 6.2 (61–79) |
Angiographic results (N = 60) | ||||
Normal | – | – | 7 (12%) | – |
RCA > LAD, LCX | – | – | 11 (18%) | – |
3VD | – | – | 17 (28%) | – |
LAD, LCX > RCA | – | – | 25 (42%) | – |