Title:
フェイズドアレイ焦点超音波システムにおいてホットスポットを減少させるためのシステムおよび方法
Document Type and Number:
Japanese Patent JP2004511268
Kind Code:
A
Abstract:
System and methods for performing a therapeutic procedure using focused ultrasound include providing a piezoelectric transducer including a plurality of transducer elements, such as a concave concentric ring array or a liner array of transducer elements. Drive circuitry is coupled to the transducer for providing drive signals to the transducer elements at one of a plurality of discrete RF frequencies. A controller is coupled to the drive circuitry for periodically changing a frequency of the drive signals to one of the plurality of discrete frequencies, while controlling a phase component of the drive signals to maintain the focus of the transducer at a primary focal zone during a single sonication.
Inventors:
Vitek, Shuki
Brenner, Naama
Brenner, Naama
Application Number:
JP2001577814A
Publication Date:
April 15, 2004
Filing Date:
April 12, 2001
Export Citation:
Assignee:
Texonics limited
International Classes:
A61B18/00; A61B17/225; A61N7/02; B06B1/02; G10K11/34; H01Q21/20; H04R3/00; H04R17/00; A61N7/00; (IPC1-7): A61B18/00; H01Q21/20; H04R3/00; H04R17/00
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita