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Drive control method of acoustic field focus mode of sphere phase array focused ultrasound transducer

A focused ultrasound and phased array technology, applied in the field of biomedical instruments, can solve the problems of unable to form three-dimensional multi-focus scanning, unable to generate non-axisymmetric multi-focus, etc., and achieve the effect of large volume and high efficiency

Inactive Publication Date: 2009-02-18
XI AN JIAOTONG UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

The above-mentioned patents use the annular array phase angle modulation method to produce multi-focus points with annular distribution of the focal plane, but cannot produce non-axisymmetric multi-focus points, so they cannot form multi-focus points in three-dimensional space.

Method used

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  • Drive control method of acoustic field focus mode of sphere phase array focused ultrasound transducer
  • Drive control method of acoustic field focus mode of sphere phase array focused ultrasound transducer
  • Drive control method of acoustic field focus mode of sphere phase array focused ultrasound transducer

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Embodiment Construction

[0027] see figure 1 , what adopted in the focused ultrasound treatment system is a spherical phased array focused ultrasound transducer 2 with hundreds of elements, and its driving control is realized by controlling a hundred-channel power driver 3 through a layered distribution controller 4, and the control method of the present invention is used for Hierarchical distribution controller 4 controls the power driver 3 of hundreds of channels. When the main control computer 5 sends commands and treatment data to the layered distribution controller 4, the layered distribution controller 4 controls the hundred-channel power driver 3 according to the control method to realize the hundred-element spherical phased array focused ultrasonic transducer 2 Driven to generate sound field modes suitable for tumor treatment such as three-dimensional single focus, three-dimensional multi-focus, combined switching focus and sub-array single focus and multi-focus.

[0028] The control method o...

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Abstract

The invention discloses a acoustic field focal point mode driving and control method of sphere phased array focusing ultrasonic transducer, comprising a acoustic field algorism of sphere rectangle phased array and a driving control of phased multiple-points focusing mold genetic algorism. And the system matched aid method is that: a main control computer controls a layer-distribution controller to control the hundred-channel power driver to drive the hundred-array unit sphere phased array focusing ultrasonic transducer. The invention combines two algorism control methods in said treatment system to generate the acoustic mold as three-dimensional single focus, three-dimensional multiple focuses, combination switch focus and sub-array single and multiple focus. Wherein, the big focus formed by multiple focuses has larger volume and higher efficiency in single treatment than present single array focus; and the sub-array focus mold can avoid the shade of rib to process the focusing ultrasonic non-invasive surgery.

Description

technical field [0001] The invention belongs to the technical field of biomedical instruments, and relates to a control method of a focused ultrasonic transducer, in particular to a driving control method of an acoustic field focus mode of a spherical phased array focused ultrasonic transducer, which can control the spherical phased array focused ultrasonic The three-dimensional single focus, three-dimensional multi-focus, combined switching focus, etc. of the sound field of the transducer are controlled. Background technique [0002] High Intensity Focused Ultrasound (HIFU) is a treatment that focuses ultrasonic energy on the deep target tissue of the human body to achieve precise thermal damage to the selected target tissue without harming the adjacent normal tissue. Surgery, FUS). [0003] There are two types of HIFU transducers: single array element transducer and phased array transducer. HIFU transducer and its beamforming are very important in HIFU treatment. The ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N7/00A61N7/02A61B17/00A61B18/00B06B3/00B06B3/04
Inventor 陆明珠万明习王晓东徐丰
Owner XI AN JIAOTONG UNIV
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