A CT-free hip navigation system using an anteroposterior plain radiograph of the hip. - W. Yamanashi; Nobuhiko Sugano; Toshihiko Sasama; Takashi Nishii; Hidenobu Miki; Yoshinobu Sato; Hideki Yoshikawa (CARS, 2003)

Measurement of acetabular cup orientation in total hip arthroplasty using a volume registration technique. - W. Yamanashi; Nobuhiko Sugano; Y. Watanabe; Yoshinobu Sato; Takashi Nishii; Hidenobu Miki; Hideki Yoshikawa (CARS, 2004)