Plan robustness evaluation using the DVH band method including (a) illustration of how we derived the ITV DVH band width at D95% for one typical patient. (b) Averaged DVH band width for total lung V5Gy[RBE] and V20Gy[RBE], esophagus V60Gy[RBE], heart V50Gy[RBE], and (c) averaged DVH band width for ITV D95%, D5%- D95%, and D2cc, total lung Dmean, esophagus D33% and Dmean, spinal cord Dmax, heart D33% and Dmean, respectively. Numbers at the top of the columns in (b) and (c) were p values from Wilcoxon signed-rank test. The error bars in (b) and (c) showed the maximum and minimum values among the 10 patients. Abbreviations: RBE = relative biological effectiveness.