Table 1.
Beam arrangement of IMRT plans
| Number of beams | Gantry angles |
| 3 | 0o, 120o, 240o |
| 5 | 0o, 72 o, 144 o, 216o, 288o |
| 7 | 0o, 52 o, 103 o, 154 o, 206 o, 257o, 308o |
| 9 | 0o, 40 o, 80 o, 120 o, 160 o, 200 o, 240 o, 280o, 320o |
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