TABLE 1.
Patient characteristics and radiation dose.
|
Group A Reduced‐dose TAVI planning CT |
Group B Routine‐dose CCTA |
Group C Routine‐dose aortic CTA |
p | |
|---|---|---|---|---|
| Gender (female/male) | n = 82 (49/33) | n = 86 (43/43) | n = 77 (47/30) | |
| Age, year | 61.52 ± 9.25 | 62.40 ± 10.69 | 61.58 ± 11.05 | 0.816 |
| BMI, kg m−2 | 24.72 ± 4.06 | 24.13 ± 3.59 | 23.68 ± 3.53 | 0.328 |
| HR, bpm | 72.70 ± 12.73 | 75.01 ± 14.23 | — | 0.407 |
| Clinical history | ||||
| Hypertension | 24 (29%) | 31 (36%) | 18 (23%) | |
| Type II diabetes | 12 (15%) | 17 (20%) | 13 (17%) | |
| Hyperlipidemia | 16 (20%) | 27 (31%) | 6 (8%) | |
| Stenosis severity | ||||
| Stenosis <50% | 37 (15%) | 61 (24%) | — | |
| Stenosis ≥50% | 34 (14%) | 30 (12%) | ||
| DLP, mGy*cm | CCTA: 296.25 ± 50.59 | 761.65 ± 213.91 | 549.03 ± 72.57 | |
| Aortoiliac CTA: 271.40 ± 36.57 | ||||
| Total: 567.65 ± 58.18 | ||||
| ED, mSv | Total: 8.22 ± 0.83 | 10.66 ± 2.99 | 8.24 ± 1.09 | |
Note: Data are presented as mean ± standard deviation, number, and frequencies in parentheses.
Abbreviations: BMI, body mass index; CCTA, coronary CT angiography; CT, computed tomography; CTA, CTA, CT angiography; DLP, dose‐length product; ED, effective dose; HR, heart rate; TAVI, transcatheter aortic valve implantation.