Computation Time for 3D Dose Map Acquisition Using 4 CPU Cores and 16-GB Random-Access Memory
| Method | Computation time (h) | Relative time |
| Direct Monte Carlo | 235.20 | 1 |
| Direct Monte Carlo (complete simulation) | 4,704.03 | 20 |
| Single VSV (N = 1) | 0.17 | 0.00074 |
| Multiple VSV (N = 4) | 0.69 | 0.00295 |
| Multiple VSV (N = 6) | 1.04 | 0.00443 |
| Multiple VSV (N = 8) | 1.39 | 0.00591 |
| Multiple VSV (N = 10) | 1.74 | 0.00738 |
| Multiple VSV (N = 20) | 3.47 | 0.01476 |