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A Quasi-Phase Super-resolution Method for Respiratory Motion Signals on Thoracic and Abdominal Surfaces

A breathing motion, quasi-phase technology, applied in radiation therapy, X-ray/γ-ray/particle irradiation therapy, treatment, etc., can solve the problem of not finding breathing motion signals, shorten the signal analysis time, and improve the super-resolution accuracy. Effect

Inactive Publication Date: 2021-09-07
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this field, no technical means for super-resolution of respiratory motion signals have been found

Method used

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  • A Quasi-Phase Super-resolution Method for Respiratory Motion Signals on Thoracic and Abdominal Surfaces
  • A Quasi-Phase Super-resolution Method for Respiratory Motion Signals on Thoracic and Abdominal Surfaces
  • A Quasi-Phase Super-resolution Method for Respiratory Motion Signals on Thoracic and Abdominal Surfaces

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specific Embodiment approach 1

[0046] This embodiment is an embodiment of a quasi-phase super-resolution circuit for respiratory motion signals on the surface of the chest and abdomen.

[0047] The quasi-phase super-resolution circuit of respiratory motion signals on the surface of the chest and abdomen, the logic block diagram is as follows figure 1 As shown, the quasi-phase super-resolution circuit of the chest and abdomen surface respiratory motion signal includes a signal conversion module, a phase difference multi-output module, a resistance chain multi-phase generation module, a multi-phase sine square wave conversion module and a multi-phase fusion logic gate module; wherein, The circuit diagram of the phase difference multi-output module is as follows: figure 2 As shown, the circuit diagram of the resistance chain multi-phase generation module is shown in image 3 As shown, the circuit diagram of the multi-phase sine square wave conversion module is as follows Figure 4 As shown, the circuit diag...

specific Embodiment approach 2

[0057] This embodiment is an embodiment of a quasi-phase super-resolution method for respiratory motion signals on the surface of the chest and abdomen.

[0058] The method for quasi-phase super-resolution of respiratory motion signals on the surface of the chest and abdomen is characterized in that it comprises the following steps:

[0059] Step a, in the signal conversion module, utilize the filter and amplifier whose passband frequency includes ω to realize the input as periodic breathing motion signal f(t), and the output is:

[0060]

[0061] in,

[0062] The filter selects the component with frequency ω to pass;

[0063] The amplifier scales the amplitude to

[0064] Step b. In the multi-phase difference output module, use two differential circuits composed of resistors, capacitors and operational amplifiers to implement one-time differential and two-time differential of the output cosine signal of the signal conversion module, and then realize that the phase diff...

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Abstract

The method for super-resolution of respiratory motion signals on the surface of the chest and abdomen of the present invention belongs to the technical field of precision instruments and radiotherapy of the chest and abdomen; the method first converts the respiratory motion signal into a periodic signal through a signal conversion module, and then uses a phase difference multi-output module to form a phase difference Three outputs with equal phase difference of π / 2, and then through the resistance chain multi-phase generation module to form five outputs with equal phase difference of π / 5, and then through the multi-phase sine square wave conversion module to form a square wave, and through the multi-phase The fusion logic gate module forms a quasi-phase super-resolution square wave output, which realizes the transformation of one cycle of the respiratory motion signal into a multiple-cycle quasi-phase square wave signal, and the phase difference is zero cycle of the quasi-phase super-resolution square wave output signal.

Description

technical field [0001] The invention discloses a quasi-phase super-resolution method for respiratory motion signals on the surface of the chest and abdomen, belonging to the technical fields of precision instruments and radiation therapy of the chest and abdomen. Background technique [0002] During radiotherapy for thoracic and abdominal tumors, breathing makes the tumor area escape the target area or normal tissue enter the target area, which not only reduces the effect of radiotherapy, but also easily causes complications. [0003] In order to solve the negative impact of respiratory exercise on radiation therapy, the methods of respiratory maintenance and respiratory gating were first adopted clinically, and the control of tumor location was achieved through the intervention of breathing. Although some effects have been achieved, the patient's tolerance is poor. ; In order to improve the patient's tolerance and not interfere with the patient's breathing, a tracking syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1048
Inventor 赵烟桥陈睿胡亚欣
Owner HARBIN UNIV OF SCI & TECH
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