Table 1.
Baseline study characteristics
| Patient characteristics | |
|---|---|
| Male (%) | 61 (69.3) |
| Age | 59 (13.5) |
| BMI | 27 (4.9) |
| PCI in history (%) | 6 (6.8) |
| Scan protocol | |
| Prospective trigger with relative systolic ECG pulsing (%) | 32 (36.4) |
| Prospective trigger with relative diastolic ECG pulsing (%) | 29 (33.0) |
| Prospective trigger with relative systolic and diastolic ECG pulsing (%) | 12 (13.6) |
| Ultra-fast, low dose high pitch (%) | 7 (8.0) |
| Prospective trigger with relative systolic ECG pulsing (using forced maximum collimation setting) (%) | 4 (4.5) |
| Prospective trigger with absolute systolic ECG pulsing (%) | 2 (2.3) |
| Prospective triggered high pitch spiral (%) | 2 (2.3) |
| CT radiation dose | |
| TNC DLP, mGy*cm | 31.7 [25.2–39.7] |
| TNC CTDIvol, mGy | 2.3 [1.6–2.9] |
| TNC effective mAs | 16.0 [13.0–20.0] |
| CCTA DLP, mGy*cm | 190.0 [129.0–297.0] |
| CCTA CTDIvol, mGy | 14.6 [10.4–23.2] |
| CCTA effective mAs | 38.0 [32.0–50.0] |
Data is presented as mean ± standard deviation (SD), median (25th–75th percentile), or frequencies (percentage). BMI, body mass index; ECG, electrocardiogram; PCI, percutaneous coronary intervention; PC, pure calcium; TNC, true non-contrast; VNC, virtual non-contrast; CTDIvol, CT dose index