Evaluation of Dosimetric Efficacy of RapidArc and Intensity-modulated Radiation Therapy Techniques in Head-and-Neck Cancers

This study highlights the dosimetric superiority of RA over IMRT, with significantly fewer MU, reduced BoT, and comparable GPs. RA achieved slightly higher mean PTV doses with similar homogeneity and conformity while delivering lower doses to critical OARs, such as the spinal cord, PRV spinal cord, and parotid glands, making it clinically advantageous.