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Apparatus and method for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting

A polynomial fitting, radio frequency ablation technology, applied in the field of monitoring radio frequency ablation equipment and algorithm research, can solve the problems of poor monitoring image quality, not providing high image resolution and smoothing, and large window.

Inactive Publication Date: 2017-01-04
TIANJIN UNIV
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Problems solved by technology

Secondly, this study applied the traditional Nakagami imaging algorithm, because the window used is large, the traditional Nakagami imaging does not provide high image resolution and smoothness, resulting in poor image quality for monitoring during surgery

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  • Apparatus and method for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting
  • Apparatus and method for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting
  • Apparatus and method for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting

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Embodiment Construction

[0052] The technical scheme adopted by the invention is a monitoring radiofrequency ablation algorithm combining window modulation Nakagami imaging and Gaussian polynomial fitting.

[0053] 1.1 Window Modulation Composite Nakagami Imaging

[0054] The Nakagami distribution model was originally used to describe the statistics of radar echoes. Later, Hampshire proposed to use the parameters of the Nakagami statistical model to analyze ultrasonic inverse scattering signals. In the Nakagami distribution, the probability density function of the inverse scattering signal envelope R is defined as follows:

[0055] f ( R ) = 2 m m R 2 m - 1 Γ ( m ) Ω ...

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Abstract

The invention relates to medical image processing and ultrasonic temperature imaging, provides a method for improving the resolution of monitored radiofrequency ablation surgical electrode locations and heating ranges, and discloses an apparatus and method for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting. The technical scheme includes that the apparatus for monitoring radiofrequency ablation by means of window modulation and Gauss polynomial fitting is provided with a frame data setting module, an envelope image acquiring module, a Nakagami image forming module, a compounding Nakagami image acquiring module and a temporal compounding image ImgT (temporal compounding image) acquiring module; the frame data setting module, the envelope image acquiring module, the Nakagami image forming module, the compounding Nakagami image acquiring module and the temporal compounding image ImgT acquiring module are arranged on a transducer of an ultrasonic instrument; the method includes carrying out post-processing on obtained temporal compounding images ImgT by the aid of one-dimensional Gauss polynomials to obtain images for monitoring radiofrequency ablation. The apparatus and method have the advantages that the heating ranges can be effectively expanded by the aid of the method during monitored radiofrequency ablation surgery, the accuracy of cancer cell killing ranges of the radiofrequency ablation surgery can be improved, and monitoring effects can be improved; the apparatus and method are mainly applied to image processing.

Description

technical field [0001] The invention relates to the technical fields of medical image processing, ultrasonic temperature imaging, and radiofrequency ablation, in particular to monitoring radiofrequency ablation equipment and algorithm research based on window modulation Nakagami imaging and Gaussian polynomial fitting for radiofrequency ablation surgery. Background technique [0002] In medical research, ultrasonic images are mainly used in fetal examination, breast ultrasonic detection [1], observation of blood flow in blood vessels and observation of internal organ movement [2,3], etc.; the center frequency of the transducer of the ultrasonic instrument ranges from 5MHz to between 15MHz. The main imaging methods used for image monitoring include A mode (amplitude modulation), B mode (brightness modulation), M mode (motion modulation) and Doppler mode; among them, B mode is the most widely used. The working principle of the ultrasonic image is mainly that the transducer se...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/14A61B8/08G06T5/50
CPCA61B8/0833A61B8/4483A61B8/5207A61B18/12A61B18/14A61B2018/00714A61B2018/00791G06T5/50G06T2207/10132G06T2207/20216G06T2207/30056
Inventor 刘一达李锵杜衡崔博翔
Owner TIANJIN UNIV
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