Table 2 Measured ion chamber readings (mR) representing gonadal exposure from an abdominal CT scan
Scan # | No Shield | Large Shield (650 cm 3 ) | Medium Shield (450 cm 3 ) | Small Shield (150 cm 3 ) |
|---|---|---|---|---|
1 | 69.7 | 29.4 | 33.2 | 49.8 |
2 | 68.7 | 29.5 | ||
3 | 68.9 | 28.3 | ||
4 | 68.3 | 29.0 | ||
5 | 67.2 | 29.2 | ||
Average +/- std.dev. | 68.6 +/- 0.9 | 29.1 +/- 0.5 | ||
% Reduction | 58% | 52% | 42% | |
Reduction Factor | 2.4 | 2.1 | 1.7 |