Directional Dependence of Gafchromic LD-V1. - Nishihara, Shinnosuke; Gotanda, Tatsuhiro; Hasuo, Tomoyuki; Imai, Shinya; Kawaji, Yasuyuki; Yatake, Hidetoshi; Akagawa, Takuya; Gotanda, Rumi; Tanki, Nobuyoshi; Katsuda, Toshizo (Journal of Medical Physics, 2025)