[IEEE 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium - San Juan, Puerto Rico, USA (2000.10.22-2000.10.25)] 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121) - 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)