Evaluation of spatial correlation of external beam radiotherapy and interstitial brachytherapy with deformable image registration (DIR)-based dose summation in early head and neck squamous cell carcinoma - Mukherji, Ashutosh; Nanda, Sambit S.; Dokania, Shubham; Sanju, Sanju; Choubey, Ajay K.; Patil, Ninad H.; Kashyap, Kaushik; Krishnan, Ajay S.; Mondal, Pritam; Pradhan, Satyajit (Journal of Contemporary Brachytherapy, 2025)