A computerized framework for monitoring four-dimensional dose distributions during stereotactic body radiation therapy using a portal dose image-based 2D/3D registration approach. - Takahiro Nakamoto; Hidetaka Arimura; Katsumasa Nakamura; Yoshiyuki Shioyama; Asumi Mizoguchi; Taka-aki Hirose; Hiroshi Honda; Yoshiyuki Umezu; Yasuhiko Nakamura; Hideki Hirata (Comput. Medical Imaging Graph., 2015)