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1. (WO2014192757) ULTRASONIC MEDICAL DEVICE

Pub. No.:    WO/2014/192757    International Application No.:    PCT/JP2014/063997
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Wed May 28 01:59:59 CEST 2014
IPC: A61B 8/08
A61B 18/00
Applicants: THE UNIVERSITY OF TOKYO
国立大学法人東京大学
HITACHI ALOKA MEDICAL, LTD.
日立アロカメディカル株式会社
Inventors: AZUMA, Takashi
東 隆
SASAKI, Akira
佐々木 明
AOYAGI, Ryosuke
青柳 良佑
TAKAGI, Shu
高木 周
ITANI, Kazunori
射谷 和徳
FUJIWARA, Keisuke
藤原 圭祐
TAKEUCHI, Hideki
竹内 秀樹
Title: ULTRASONIC MEDICAL DEVICE
Abstract:
A modulation frequency control unit (36) controls a displacement-use transmission unit (34) such that a displacement-use ultrasonic beam (EB) is subjected to modulation processing using a relatively high modulation frequency and a relatively low modulation frequency. A displacement measurement unit (24) measures the displacement of a tissue in a treatment area (P) at each of the modulation frequencies, and a coagulation measurement unit (25) measures local coagulation in the treatment area (P) on the basis of the measurement result of the displacement at the relatively high modulation frequency, and measures wide-area coagulation in the treatment area (P) on the basis of the measurement result of the displacement at the relatively low modulation frequency. Consequently, for example, the presence or absence of local coagulation immediately after coagulation has occurred, and the like can be measured with high accuracy, and further, for example, the size of wide-area coagulation after coagulation has progressed, and the like can be measured with high accuracy.