Visualization of parenchymal deformation during renorrhaphy: a novel deformation index in a simulated kidney model. - Tatenuma T; Takiyama H; Yamada T; Kobayashi K; Jikuya R; Noguchi G; Ito H; Mitsuru K; Ito Y; Muraoka K; Hasumi H; Makiyama K (Journal of robotic surgery, 2025)