Table 1.
Number of patients to calculate the effective dose conversion factor.
| CT Protocols | Number of Patients | ||
|---|---|---|---|
| Male | Female | Total | |
| Brain | 443 | 247 | 690 |
| Intra-cranial angiography | 119 | 108 | 227 |
| C spine | 187 | 74 | 261 |
| L spine | 177 | 85 | 262 |
| Neck | 111 | 70 | 181 |
| Chest | 217 | 126 | 343 |
| Abdomen & pelvis | 313 | 285 | 598 |
| Coronary angiography | 158 | 52 | 210 |
| Calcium scoring | 173 | 49 | 222 |
| Aortography | 44 | 11 | 55 |
| Pediatric brain (<2 years) | 175 | 163 | 338 |
| Pediatric brain (4–6 years) | 146 | 82 | 228 |
| Pediatric brain (9–11 years) | 94 | 35 | 129 |
| Pediatric brain (13–15 years) | 24 | 25 | 49 |
| Total | 2381 | 1412 | 3793 |