WO/2004/056421 is referenced by 13 patents.

A system for focusing ultrasonic energy through intervening tissue into a target site within a tissue region includes a transducer array including transducer element, an imager for imaging the tissue region, a processor receiving images from the imager to determine boundaries between different tissue types within the intervening tissue and generate correction factors for the trans ducer elements to compensate for refraction occurring at the boundaries bet ween the tissue types and/or for variations in speed fo sound. A controller is coupled to the processor and the transducer array to receive the correction factors and provide excitation signals to the transducer elements based upon the correction factors. The correction factors may include phase and/or amplitude correction factors.

Title
Tissue aberration corrections in ultrasound therapy
Application Number
PCT/IB2003/005551
Publication Number
2004/056421
Application Date
December 1, 2003
Publication Date
July 8, 2004
Inventor
Vitek Shuki
Vortman Kobi
Assignee
Insightec Txsonics
IPC
A61B 08/08
A61B 19/00
A61N 07/02
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