3) Matsumura T, Tamano S, Mitake T, et al.: Development of Freehand Ultrasound Elasticity Imaging System and in-vivo Results. Proc.of First International Conference on the Ultrasonic Measurement and Imaging of Tissue Elasticity, 2002: 1, 80.
4) Matsumura T, Tamano S, Mitake T, et al.: Development of Realtime Ultrasound Elasticity Imaging System and in vivo Results. J Med Ultrasonics, 2003: 30, 470.
5) Murayama N, Waki K, Akamatsu I, et al.: Development of Real-Time Tissue Elastography on EUB-8500. J Med. Ultrasonics, 2004: 31, 113.