Ultrasonic energy focusing method based on array weighted network optimization and device thereof

A technology of ultrasonic energy and array weighting, applied in the medical field, can solve problems such as difficult spatial energy distribution function, increase patient pain, and long treatment time, so as to relieve treatment pain, shorten treatment time, and enhance user experience.

Inactive Publication Date: 2018-10-02
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

However, the spatial energy distribution function generated by the rank-1 system based on the phased array is difficult t

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  • Ultrasonic energy focusing method based on array weighted network optimization and device thereof
  • Ultrasonic energy focusing method based on array weighted network optimization and device thereof
  • Ultrasonic energy focusing method based on array weighted network optimization and device thereof

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Embodiment Construction

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0045]The ultrasonic energy focusing method and device based on array weighting network optimization proposed according to the embodiments of the present invention will be described below with reference to the accompanying drawings. First, the ultrasonic energy focusing method based on array weighting network optimization proposed according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0046] figure 1 It is a flowchart of an ultrasonic energy focusing met...

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Abstract

The invention discloses an ultrasonic energy focusing method based on array weighted network optimization and a device thereof, wherein the method comprises the following steps of introducing an arrayweighted network which replaces a phase shifter array of an phased array; constructing a relation between the weight matrix of the array weighted network and a spatial ultrasonic energy distributionfunction generated by the array, thereby obtaining a system model; constructing a weight optimization problem according to the system model and tumor spatial distribution; and respectively constructing a weight set and an ideal weight set which satisfy a constrained condition in a spatial domain and a transformation domain according to the target function and the constrained condition of the optimization problem, thereby generating a spatial ultrasonic energy distribution function through a cross-domain alternative projection algorithm so that the ultrasonic energy is uniformly distributed onthe tumor tissue of a breast. The method according to the invention has advantages of effectively reducing the ultrasonic energy in a healthy tissue, shortening treatment time, alleviating treatment pain and effectively improving user experience.

Description

technical field [0001] The present invention relates to the field of medical technology, in particular to a method and device for focusing ultrasonic energy based on array weighting network optimization. Background technique [0002] Phased array systems were first used in advanced radar and wireless communication systems. Phased arrays are based on the principle of wave interference, so in principle, energy focusing can be achieved on any form of wave (including sound waves, etc.). Hyperthermia therapy for breast cancer based on ultrasonic energy focusing uses ultrasonic phased array system to focus ultrasonic energy on tumors in breast tissue, and use the heat generated by ultrasonic energy to kill cancer cells. Unlike radiotherapy and chemotherapy, this type of treatment will not produce harmful chemical or radioactive stimulation to the human body, and has the advantages of relative safety, good therapeutic effect, and low pain for patients. [0003] However, from the ...

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Application Information

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IPC IPC(8): A61N7/02G16H50/20
CPCA61N7/02A61N2007/0004G16H50/20
Inventor 李风从陈万里王锐
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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