Kheonkaew, Banjong, Kridsanapan Srimongkon, Thawatchai Prabsattroo, and Wichai Witchathorntragul. 2020. “A comparison of modulation transfer function of indirect digital radiography systems”. Journal of Associated Medical Sciences 53 (3):1-7. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/241259.