Investigation of Radiation Isocenter Accuracy of Linear Accelerator – New Approach of Comprehensive Evaluation of Gantry, Couch, and Collimator Isocenters. - Rao, Avinash Kuppa; Palanisamy, Manikandan; Subrahmanyam, G. V.; Swathi, S. P.; Mani, Tamilarasan (Journal of Medical Physics, 2025)