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Effective Mean Radiation Dose from CAC and CCTA Acquisitions
| CAC alone | CCTA alone | |||
|---|---|---|---|---|
| n | Mean ± SD | n | Mean ± SD | |
| All Protocols and Scanners | 472 | 1.4 ±0.7 | 473 | 9.9 ±4.9 |
|
| ||||
| Protocol | ||||
| Prospectively-gated CCTA | 63 | 1.5 ±0.5 | 63 | 6.5 ±3.8 |
| Retrospective-gated CCTA | 409 | 1.4 ±0.7 | 410 | 10.4 ±4.9 |
|
| ||||
| Scanner Type | ||||
| 128-Slice DSCT | 78 | 0.5 ±0.3 | 78 | 5.7 ±3.7 |
| CT scanners (excluding 128-slice DSCT) | 394 | 1.6 ±0.6 | 395 | 10.7 ±4.7 |
Abbreviations as in Table 1. DSCT denotes dual-source computed tomography.
