Table 1.
Characteristics of the studied patient population
| Characteristic | Patients |
|---|---|
| Number | 651 |
| Age (years) | 64 ± 12 |
| Male (%) | 57 |
| Female (%) | 43 |
| Mean body mass index ± SD | 31 ± 6.3 |
| Diabetes mellitus (%) | 27 |
| Hypertension (%) | 64 |
| Hyperlipidemia (%) | 51 |
| Smoking (%) | 19 |
| Exercise SPECT (%) | 34 |
| Adenosine SPECT (%) | 66 |
| Mean ejection fraction ± SD (%) | 61.7 ± 12.2 |
| ICA results (disease defined as ≥ 70% stenosis) | |
| No disease | 187 (29%) |
| LAD disease | 280 (43%) |
| LCX disease | 169 (26%) |
| RCA disease | 247 (38%) |
| 1-vessel disease‡ | 232 (36%) |
| 2-vessel disease‡ | 127 (19%) |
| 3-vessel disease‡ | 70 (11%) |
A total of 651 SPECT myocardial perfusion imaging studies were analyzed. All patients underwent correlative invasive coronary angiography (ICA)
LAD left anterior descending artery, LCX left circumflex artery, RCA right coronary artery, SD standard deviation, SPECT single-photon emission computed tomography
‡Vessel refers to one of the major epicardial arteries (left main, LAD, LCX, or RCA)