Table 3.
Data From the 82-Rubidium PET/CT Scan
| Parameter | Men (n = 50) | Women (n = 44) | P Value |
|---|---|---|---|
| Positive CACS, No. (%) | 20 (40) | 7 (16) | .01 |
| CACS, median (range)a | 123 (1–1884) | 130 (22–599) | .74 |
| Rest Rb-PET | |||
| Rate-pressure product, mean ± SEM | 8742 ± 242 | 8030 ± 400 | .12 |
| LVEF, mean ± SEM, % | 54 ± 1 | 66 ± 1 | <.001 |
| Stress Rb-PET | |||
| Rate-pressure product, mean ± SEM | 10 558 ± 403 | 10 231 ± 504 | .61 |
| LVEF, mean ± SEM, % | 60 ± 1 | 71 ± 1 | <.001 |
| LVEF increase, mean ± SEM, % | 13 ± 1 | 9 ± 1 | .04 |
| Perfusion data | |||
| MBF rest, mean ± SEM, mL/g/min | 0.89 ± 0.03 | 1.23 ± 0.05 | <.001 |
| MBF rest RPP corrected, mean ± SEM, mL/g/min | 1.03 ± 0.03 | 1.56 ± 0.05 | <.001 |
| MBF stress, mean ± SEM, mL/g/min | 2.61 ± 0.09 | 3.2 ± 0.10 | <.001 |
| MFR, mean ± SEM | 2.57 ± 0.11 (n = 46) | 2.13 ± 0.10 (n = 42) | .003 |
| MFR <2, No. (%) | 11 (24) | 19 (45) | .03 |
| SSS >4, No. (%) | 11 (22) | 6 (14) | .23 |
Abbreviations: CACS, coronary artery calcium score; LVEF, left ventricular ejection fraction; MBF, myocardial blood flow; MFR, myocardial flow reserve; PET/CT, positron emission tomography/computed tomography; SEM, standard error of the mean; SSS, summed stress score.
aFor the CACS positive only.