Table 4 Comparison of radiation dose and patient characteristics between dual-source CTA (DSCTA) in 2019 and single-source CTA (SSCTA) in 2010
Parameters | DSCTA (n = 406) | SSCTA (n = 233) | P value (95% CI) |
|---|---|---|---|
Effective dose (mSv), mean ± SD | 2.88 ± 0.85 | 7.15 ± 3.4 | < 0.0001* (3.64–4.89) |
Gender, (male,%) | 24 (30.7) | 9 (47.4) | 0.14 (− 4.57 to 38.55) |
Age (years), mean ± SD | 65.5 ± 9.6 | 68.3 ± 10.2 | 0.06 (− 9.79 to − 0.60) |
BMI (kg/m2), mean ± SD | 23.4 ± 3.6 | 22.9 ± 5.5 | 0.58 (− 2.3 to 1.32) |