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A phase-staggered super-resolution method for respiration motion signals on the thoracoabdominal surface

A breathing motion and super-resolution 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 phase-staggered super-resolution method for respiration motion signals on the thoracoabdominal surface
  • A phase-staggered super-resolution method for respiration motion signals on the thoracoabdominal surface
  • A phase-staggered super-resolution method for respiration motion signals on the thoracoabdominal surface

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specific Embodiment approach 1

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

[0047] Chest and abdomen surface respiration motion signal out-of-phase super-resolution circuit, the logic block diagram is as follows figure 1 As shown, the thoracic and abdominal surface respiratory motion signal phase-staggered super-resolution circuit 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 diagram of the mult...

specific Embodiment approach 2

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

[0058] The method for phase-staggered super-resolution of respiratory motion signals on the surface of the chest and abdomen is characterized in that it includes 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 pha...

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Abstract

The invention relates to a phase-staggered super-resolution method for respiratory motion signals on the surface of the chest and abdomen, which belongs to the technical field of precision instruments and thoracoabdominal radiotherapy; the method first converts the respiratory motion signal into a periodic signal through a signal conversion module, and then through a phase difference multi-output module , forming three outputs with equal phase difference with a phase difference of π / 2, and then forming five outputs with equal phase difference with a phase difference of π / 5 through the resistance chain multiphase generating module, and then forming a square wave through a multiphase sine square wave conversion module, And through the multi-phase fusion logic gate module to form the out-of-phase super-resolution square wave output, that is, to realize the transformation of one cycle of respiratory motion signal into a multi-cycle out-of-phase square wave signal, and the phase error phase super-resolution square wave output signal quarter cycle of .

Description

technical field [0001] The invention discloses a phase-staggered super-resolution method for respiratory motion signals on the surface of the chest and abdomen, and belongs 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...

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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