Comparison of Ventricular Geometry for Two Real Time 3D Ultrasound Machines With Three Dimensional Level Set. - Andrew Laine; Elsa D. Angelini; Ryo Otsuka; Shunichi Homma (ISBI, 2004)

GPU based real-time surgical navigation system with three-dimensional ultrasound imaging for water-filled laparo-endoscope surgery. - Ryo Otsuka; Ikuma Sato; Ryoichi Nakamura (EMBC, 2012)

Implementation of d-Spline-based incremental performance parameter estimation method with ppOpen-AT. - Teruo Tanaka; Ryo Otsuka; Akihiro Fujii; Takahiro Katagiri; Toshiyuki Imamura (Sci. Program., 2014)