Radical cyberknife radiosurgery with tumor tracking: an effective treatment for inoperable small peripheral stage I non-small cell lung cancer

Table 1 Central Critical Structure Radiation Dose Limits

Adjacent Structure	Maximum Dose Limit (total for 3 fractions)
Spinal cord	18 Gy
Left ventricle	18 Gy
Esophagus	24 Gy
Main bronchus	30 Gy
Trachea	30 Gy
Aorta	40 Gy

ISSN: 1756-8722