Salih, F. M., & Al-Farsi, A. N. (2001). Polymethyl Methacrylate (Perspex) Line Pattern Phantom : A New Gamma Camera Test Pattern for Assessment of Extrinsic Resolution and Linearity. Sultan Qaboos University Medical Journal, 3(1), 3–7. Retrieved from https://journals.squ.edu.om/index.php/squmj/article/view/1209