Table 1.
Value (HVL, Eeff, QI) of Beam quality with a combination of target / filter and each tube voltage. All conditions including 3 mm PMMA
| Tube Voltage (kV) | 24 | 26 | 28 | 30 | 32 | 35 | |
|---|---|---|---|---|---|---|---|
| W / 0.5 mm Al | HVL (mmAl) | 0.341 | 0.357 | 0.374 | 0.391 | 0.408 | 0.433 |
| Eeff (keV) | 15.701 | 16.086 | 16.441 | 16.757 | 17.049 | 17.465 | |
| QI | 0.654 | 0.619 | 0.587 | 0.559 | 0.533 | 0.499 | |
| W / 0.025 mm Rh | HVL (mmAl) | 0.341 | 0.357 | 0.374 | 0.391 | 0.408 | 0.433 |
| Eeff (keV) | 15.274 | 15.529 | 15.776 | 16.016 | 16.252 | 16.587 | |
| QI | 0.636 | 0.597 | 0.563 | 0.534 | 0.508 | 0.474 | |
| W / 0.05 mm Ag | HVL (mmAl) | 0.555 | 0.582 | 0.610 | 0.637 | 0.666 | 0.705 |
| Eeff (keV) | 18.062 | 18.366 | 18.662 | 18.949 | 19.244 | 19.627 | |
| QI | 0.753 | 0.706 | 0.666 | 0.632 | 0.601 | 0.561 | |
| W / 0.075 mm Ag | HVL (mmAl) | 0.661 | 0.685 | 0.709 | 0.733 | 0.759 | 0.792 |
| Eeff (keV) | 19.193 | 19.432 | 19.666 | 19.895 | 20.137 | 20.438 | |
| QI | 0.800 | 0.747 | 0.702 | 0.663 | 0.629 | 0.584 | |
| Mo / 0.03 mm Mo | HVL (mmAl) | 0.331 | 0.357 | 0.379 | 0.397 | 0.414 | 0.433 |
| Eeff (keV) | 15.123 | 15.516 | 15.841 | 16.097 | 16.329 | 16.590 | |
| QI | 0.630 | 0.597 | 0.566 | 0.537 | 0.510 | 0.474 | |
| Mo / 0.025 mm Rh | HVL (mmAl) | 0.354 | 0.390 | 0.412 | 0.426 | 0.440 | 0.457 |
| Eeff (keV) | 15.479 | 16.002 | 16.306 | 16.495 | 16.679 | 16.898 | |
| QI | 0.645 | 0.615 | 0.582 | 0.550 | 0.521 | 0.483 | |