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Thoracico-abdominal surface breathing movement signal super-resolution circuit

A breathing motion and super-resolution technology, applied in X-ray/γ-ray/particle irradiation therapy, radiation therapy, treatment, etc., can solve the problem of not finding the breathing motion signal

Pending 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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  • Thoracico-abdominal surface breathing movement signal super-resolution circuit
  • Thoracico-abdominal surface breathing movement signal super-resolution circuit
  • Thoracico-abdominal surface breathing movement signal super-resolution circuit

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specific Embodiment approach 1

[0079] This embodiment is an embodiment of a super-resolution circuit for respiratory motion signals on the surface of the chest and abdomen.

[0080] Chest and abdomen surface respiratory motion signal super-resolution circuit, the logic block diagram is as follows figure 1As shown, the chest and abdomen surface respiratory motion signal 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, a multi-phase fusion logic gate module and a secondary super-resolution module; among them, 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 multi-phase fusi...

specific Embodiment approach 2

[0112] This embodiment is an embodiment of a method for super-resolution of respiratory motion signals on the surface of the chest and abdomen.

[0113] The method for super-resolution of respiratory motion signals on the surface of the chest and abdomen is characterized in that it comprises the following steps:

[0114] 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:

[0115]

[0116] in,

[0117] The filter selects the component with frequency ω to pass;

[0118] The amplifier scales the amplitude to

[0119] 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 difference is a tolerance...

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Abstract

The invention discloses a thoracico-abdominal surface breathing movement signal super-resolution circuit and belongs to the technical field of precise instruments and thoracico-abdominal radiotherapy.The circuit comprises 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, a multi-phase fusion logic gate module and a secondary super-resolution module. The modules function as a whole and not a single one can be omitted, the purpose that breathing movement signals of a cycle are converted into square wave signals of multiple cycles is achieved together, that is, super resolution of thoracico-abdominal surface breathing movement signals is achieved, the result brings further technical advantages that in the process of multiple breathing cycles, variation of breathing frequency can be judged by judging variation of the frequency of the square wave signals, more importantly,since the cycle of super-resolution square waves is far smaller than a breathing movement cycle, variation of the breathing frequency can be judged within a shorter period of time, that is, within a time range smaller than a breathing cycle.

Description

technical field [0001] The invention relates to a super-resolution circuit 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 system has emer...

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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