Table 4 CT Brain Studies with Effective Doses within the Reference Levels Recommended by ICRP 60 and 103
Age Group | ICRP 60 | ICRP 103 | ||
|---|---|---|---|---|
Pediatric ED (n = 379) | General EDs (n = 100) | Pediatric ED (n = 379) | General EDs (n = 100) | |
≤6 months | 15 (4.0) | 0 (0) | 6 (1.6) | 0 (0) |
> 6 months to ≤3 years | 47 (12.4) | 2 (2.0) | 3 (0.8) | 0 (0) |
> 3 years to ≤6 years | 53 (14.0) | 2 (2.0) | 1 (0.3) | 0 (0) |
> 6 years to ≤10 years | 62 (16.4) | 8 (8.0) | 0 (0) | 0 (0) |
> 10 years | 39 (10.3) | 5 (5.0) | 3 (0.8) | 0 (0) |