Research Article
The Scatter Search Based Algorithm for Beam Angle Optimization in Intensity-Modulated Radiation Therapy
Table 3
Comparison of plan quality indices for seven-angle selection of prostate case.
| VOI | Optimal plan | Equiangular plan |
| PTV 56 (Target) | | ] | 67.35 | 67.33 | | 54.56 | 54.55 | HI (%) | 22.83 | 22.82 | | 0.4153 | 0.3548 | PTV 68 (target) | | ] | 69.8 | 70.06 | | 63.45 | 63.44 | HI (%) | 9.3359 | 9.7482 | | 0.8243 | 0.7647 | Bladder (OAR) | | Mean dose ] | 42.32 | 45.54 | Max. dose ] | 71.19 | 71.45 | | 68.33 | 68.78 | | 25.39 | 30.13 | Rectum (OAR) | | Mean dose ] | 40.92 | 42.95 | Max. dose ] | 69.37 | 69.94 | | 61.36 | 60.94 | | 15.25 | 9.89 |
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