Fig. 1.
(a) VMAT plan for extremity sarcoma (GTV in red and PTV in blue). 95% isodose line (in thick green) is adequately covering the PTV. (b) CBCT after 14 fractions shows tumor growth (arrowed). (c) Original plan on the new tumor volume, there is GTV and PTV under-dosage. (d) Adaptive radiation (re-simulation and new plan), the 95% isodose line encompasses the PTV. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
