Figure 2From: Recommendations for implementing stereotactic radiotherapy in peripheral stage IA non-small cell lung cancer: report from the Quality Assurance Working Party of the randomised phase III ROSEL studyRatio of Prescription Isodose Volume to the PTV (R 100% ) from a total of 22 patients with stage IA tumours and 4 patients with stage 1B tumours (with PTVs of 59 cc, 85 cc, 107 cc and 108 cc).Back to article page