Table 1. Summary of optimization objectives for CyberKnife, Elekta, and Varian linear accelerator plans.
CyberKnife: Accuray Incorporated, Sunnyvale, California, United States; Elekta: Elekta, Stockholm, Sweden; Varian: Varian Medical Systems, Palo Alto, California, USA PTV: planning target volume; RT: right; LT: left; CA: coronary artery
| Structure | Criteria | Dose Objective (Gy) |
| PTV | Min Dose | 25.0 |
| PTV | Min DVH D95 | 26.5 |
| PTV | Max Dose | 32.0 |
| RT Coronary Artery | Max Dose | 19.0 |
| Ramus Coronary Artery | Max Dose | 19.0 |
| LT Anterior Descending CA | Max Dose | 19.0 |
| Mitral Valve | Max Dose | 19.0 |
| Pericardium | Max Dose | 19.0 |
| LT Main CA | Max Dose | 19.0 |
| Circumflex | Max Dose | 19.0 |
| LT Bronchus | Max Dose | 20.0 |
| Defibrillator | Max Dose | 2.0 |