Position Sensing System of Nasogastric Tube Using Long LC Resonated Marker

Marker R. Sato, Y. Hayasaka*, S. Yabukami*, T. Ozawa, H. Kanetaka**, and S. Hashi*** Sendai National College of Technology, 48 Nodayama, Medeshima-Shiote, Natori 981-1239, Japan *Department of Electric and Information Technology, TohokuGakuin University, 1-13-1 Chuo, Tagajo 985-8537, Japan **Graduate School of Biomedical Engineering, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan ***Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan