TABLE 5.
Dose differences for selected calculation points, comparing locally calculated Acuros BV to MCNP6 for TG‐186 Case 4, a single source dwell within the WG shielded cylinder in the center of an inner water cube situated within an outer cube of air. The y‐axis is along the source axis. Points B and E are located along the source axis and Points J–L represent low dose regions. Points A–F, H, and I fall within the applicator volume.
| Point position | ||||||
|---|---|---|---|---|---|---|
| Point | x (cm) | y (cm) | z (cm) | Locally calculated Acuros BV dose (cGy) | MCNP6 dose (cGy) | Percent difference (%) |
| A | 1.0 | 0.0 | 0.0 | 74.1 | 73.3 | 1.1% |
| B | 0.0 | 1.0 | 0.0 | 378.9 | 480.1 | −21.1% |
| C | 0.0 | 0.0 | 1.0 | 316.0 | 298.3 | 5.9% |
| D | −1.0 | 0.0 | 0.0 | 623.4 | 621.3 | 0.3% |
| E | 0.0 | −1.0 | 0.0 | 349.2 | 435.8 | −19.9% |
| F | 0.0 | 0.0 | −1.0 | 315.2 | 298.3 | 5.7% |
| G | 0.0 | −2.0 | 2.0 | 30.5 | 32.3 | −5.6% |
| H | −0.5 | −0.5 | −0.5 | 799.2 | 809.0 | −1.2% |
| I | 0.5 | 0.5 | 0.5 | 137.7 | 142.1 | −3.1% |
| J | 8.0 | 0.0 | 0.0 | 0.9 | 0.9 | 0.0% |
| K | 0.0 | 8.0 | 0.0 | 3.7 | 6.0 | −38.3% |
| L | 0.0 | 0.0 | −8.0 | 3.7 | 4.6 | −19.6% |