Table 2.
Acceptance criteria for Organs-At-Risk (OARs)
| OARs | Specification | Reference |
|---|---|---|
| Brainstem | Dmax < 54 Gy | RTOG |
| PRV of brainstem | 1% vol < 60 Gy (preferable: 54 Gy vol <5%) | RTOG |
| Spinal cord | Dmax < 45 Gy | RTOG |
| PRV of spinal cord | 1% vol < 50Gy (preferable: 45 Gy vol <3%) | RTOG |
| Chiasm | Dmax < 54 Gy | PWH |
| Lt and Rt optic nerve | Dmax < 54 Gy | PWH |
| Lt and Rt eyeball | Dmax < 54 Gy (RTOG < 50 Gy) | PWH |
| Lt and Rt lens | Dmax < 10 Gy (RTOG < 25 Gy) | PWH |
| Lt and Rt temporal lobe (TML) | Dmax < 72 Gy or <4 cm3 vol > 60 Gy | PWH |
| Lt and Rt parotid gland | Dmean < 26 Gy or 50% vol < 30 Gy | RTOG |
| Combined parotid glands | >20 cm3 vol received < 20 Gy | RTOG |
| Lt and Rt VIIIn and cochlea | <5% vol > 55 Gy or Dmean < 50 Gy | RTOG |
| Lt and Rt brachial plexus | Dmax < 66 Gy | RTOG |
| Laryngo-pharynx | Dmean < 45 Gy | RTOG |
| Lt and Rt TMJ | Dmax < 70 Gy or <1 cm3 vol > 75 Gy | RTOG |
| Oral cavity/trachea–oesophagus | Dmean < 40 Gy | RTOG |
| Unspecified tissues outside target: Posterior Brain, Posterior Neck | <5% vol > 70 Gy or <1%/1cm3 vol > 70 Gy | RTOG |
Dmax = Maximum Dose, Dmean = Mean dose, PRV = Planning Organ-at-Risk Volume, VIIIn = Auditory nerve, TMJs = tempero-mandibular joints, RTOG = Radiation Therapy Oncology Group, PWH = Prince of Wales Hospital.