Abstract Background To evaluate dosimetric differences of salvage irradiations using two commercially available volumetric modulated arc therapy (VMAT) stereotactic body radiation therapy (SBRT) techniques: RapidArc (RA) and HyperArc (HA). for recurrent nasopharyngeal carcinoma (NPC) after initial radiation therapy. Methods Ten patients with recurrent NPC status previously treated wit... https://www.kingarte.com/product-category/tubing/