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Quasi-phase super-resolution method for chest-and-belly surface breathing movement signals

A respiratory motion and quasi-phase technology, which is applied in radiation therapy, X-ray/γ-ray/particle irradiation therapy, treatment, etc., can solve the problem of no respiratory motion signal, shorten the signal analysis time, and improve the super-resolution accuracy Effect

Inactive Publication Date: 2020-05-12
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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  • Quasi-phase super-resolution method for chest-and-belly surface breathing movement signals
  • Quasi-phase super-resolution method for chest-and-belly surface breathing movement signals
  • Quasi-phase super-resolution method for chest-and-belly surface breathing movement signals

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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 invention relates to a super-resolution method for chest-and-belly surface breathing movement signals and belongs to the technical fields of precise instruments and chest-and-belly radiotherapy. According to the method, firstly, breathing movement signals are converted into periodic signals through a signal conversion module, then, equal-phase-difference III output with the phase difference ofPI / 2 is formed through a phase difference multi-output module, then, equal-phase-difference V output with the phase difference of PI / 5 is formed through a resistance chain multi-phase generation module, then, square waves are formed through a multi-phase sine square wave conversion module, and quasi-phase super-resolution square wave output is formed through a multi-phase merged logic gate module, so that the breathing movement signals of one period can be changed into quasi-phase square wave signals of multiple periods, and phasic difference is a zeroth period of the quasi-phase super-resolution square wave output signals.

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 Applications(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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