Table 4.
Penetration through protective garments and lead sheets as a percentage of initial intensity.
| 60 kVp |
70 kVp |
80 kVp |
100 kVp |
120 kVp |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lead (mm)1 | P2 | S2 | P | S | P | S | P | S | P | S |
| 0.30 | … | 0.99 | … | … | 5.3 | 3.9 | 9.4 | 7.3 | 11.6 | 9.9 |
| 0.35 | … | 0.51 | … | … | 3.5 | 2.5 | 6.9 | 5.1 | 8.6 | 7.2 |
| 0.40 | … | 0.28 | … | … | 2.4 | 1.6 | 5.1 | 3.7 | 6.5 | 5.4 |
| 0.45 | … | 0.15 | … | … | 1.7 | 1.1 | 3.9 | 2.7 | 5.0 | 4.1 |
| 0.50 | … | 0.10 | … | … | 1.2 | 0.75 | 3.0 | 2.0 | 3.9 | 3.2 |
| Garment |
P |
S |
P |
S |
P |
S |
P |
S |
P |
S |
| A (lead) | 0.17 | 0.090 | 0.57 | … | 1.3 | 0.7 | 3.0 | 2.0 | 3.9 | 3.1 |
| B (lead-free) | 0.24 | 0.17 | 0.68 | … | 1.6 | 1.1 | 3.9 | 2.6 | 5.8 | 4.2 |
| C (lead-free) | 0.40 | 0.43 | 0.88 | … | 1.5 | 1.5 | 3.9 | 3.2 | 6.6 | 5.1 |
1
Penetration calculated from polynomial fits listed in Table 3.
2
P = primary, S = scattered.