Table 7.
Radiation exposure between single- and dual-energy CT scans
| Parameter | SECTA | DECTA | p-value |
|---|---|---|---|
| CTDIvol (mGy) | |||
| Thorax | 16.9 ± 4.9 (7.1–28.2) | 23.3 ± 3.9 (11.4–25.1) | <0.0001a |
| Abdomen | 19.5 ± 5.6 (6.4–28.2) | 23.3 ± 3.9 (11.4–25.1) | 0.0031a |
| Pelvis | 21.3 ± 4.2 (10.3–27.4) | 23.3 ± 3.9 (11.4–25.1) | 0.055 |
| DLP (mGy*cm) | |||
| Thorax | 559.9 ± 171.4 (226.6–816.8) | 759.5 ± 152.5 (346.9–1020.6) | <0.0001a |
| Abdomen | 325.2 ± 100.3 (105.4–493.2) | 390.6 ± 75.5 (181.6–482.3) | 0.0058a |
| Pelvis | 487.5 ± 100.8 (235.1–660.8) | 538.4 ± 104.3 (241.5–662.1) | 0.054 |
CTDIvol, CT dose index volume; DECTA, Dual-energy computed tomographic angiography; DLP, Dose-length product; SECTA, Single-energy computed tomographic angiography.
Data are means ± 1 standard deviation with ranges in parentheses.
a
P < 0.05, significant difference.