| Aperture diameter (mm) | 50.8 (1) | 17.0 (1) | ||
| KAP chamber distance from the focal spot (cm) | 100.0 (5) | 50.0 (3) | 100.0 (5) | 50.0 (3) |
| Kerma-area product, PKA (μGy×m²) | 125.84 (3.10) | 127.83 (2.98) | 13.76 (40) | 14.25 (42) |
| Variation (%) | 1.57 (5) | 3.43 (11) | ||