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Self-feedback assisted method for breathing signal in cardiovascular magnetic resonance imaging

A magnetic resonance imaging and respiratory signal technology, applied in the field of medical devices, can solve problems such as not being able to cooperate well, and achieve the effect of prolonging the relative plateau period

Inactive Publication Date: 2011-02-16
XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI
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Problems solved by technology

In this process, if only the respiratory navigation waveform on the machine operation interface is directly fed back to the subjects, it is often necessary to fully train them before the examination, which often presents certain difficulties for elderly patients with low education levels, and, Sometimes patients are unable to cooperate well due to nervousness

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  • Self-feedback assisted method for breathing signal in cardiovascular magnetic resonance imaging
  • Self-feedback assisted method for breathing signal in cardiovascular magnetic resonance imaging
  • Self-feedback assisted method for breathing signal in cardiovascular magnetic resonance imaging

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Embodiment Construction

[0026] The structure of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0027] like figure 1 As shown, using the self-feedback auxiliary method of respiratory signals in cardiovascular magnetic resonance imaging of the present invention, the respiratory induction belt is bound to the abdomen of the subject, and after the air pressure signal is converted into a voltage signal by the pressure sensor, automatic gain is performed through the gain amplifier. Control, then digital sampling by the analog signal digital sampling module, and then process the sampled data: denoise, calculate the average value; finally, output by the serial port, that is, output the data through the serial port after binary encoding.

[0028] The pressure sensor can use a silicon piezoresistive sensor (PRT) to monitor the corresponding pressure drop and increase during inhalation and exhalation.

[0029] The PRT is generally co...

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Abstract

The invention relates to a self-feedback assisted method for a breathing signal in cardiovascular magnetic resonance imaging, which comprises the following steps of: 1) converting a pneumatic signal of an abdominal breathing induced band bound to a subject into a voltage signal through a pressure sensor; 2) performing gain amplification processing on an electric signal output by the pressure sensor through a gain amplifier; 3) converting the electric signal subjected to the gain amplification processing into a digital signal through an analog signal digital sampling module, and outputting the sampled data; 4) denoising the sampled data through a data processing module, and calculating a mean value; and 5) finally outputting navigation waves through a display module. The method can realize self-feedback breathing navigation gate control-based improved magnetic resonance whole-heart coronary artery imaging.

Description

technical field [0001] The invention relates to the relevant field of medical devices, in particular to a self-feedback auxiliary method for breathing signals in cardiovascular magnetic resonance imaging, and is especially suitable for magnetic resonance coronary artery imaging that requires high breathing stability. Background technique [0002] Coronary heart disease is a major disease that endangers human health. The annual medical expenses caused by it have exceeded 100 billion yuan, which brings a heavy economic burden to the country and the people. Cardiovascular disease has become an increasingly urgent major social public problem. If it cannot be effectively prevented and treated, it will affect the overall improvement of people's health quality and the rapid development of the national economy. Finding a truly non-invasive and X-ray-free method plays a very important role in the early diagnosis of coronary heart disease, risk stratification, treatment decision-makin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
Inventor 李坤成杨旗胡晨曦
Owner XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI
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