Fig. 3. DVH and example of case. (A) DVH. (B) CT image, before treatment. (C) CT image, 1 month after CKRS. After delivery of 60 Gy for 4 fractions, we checked chest CT. This figure showed partially responded tumor after CKRS. (D) CT image, 5 months after CKRS. After 5 months, asymptomatic radiation pneumonitis occurred. (E) CT image, 11 months after CKRS. After 11 months, radiation fibrosis was observed without any symptom. (F) CT image, 24 months after CKRS. Until last follow-up, tumor did not progress with radiation change. DVH, dose volume histogram; CT, computed tomography; CKRS, CyberKnife radiosurgery.
