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EIT sensor design method for optimizing edge sensitivity

A design method and sensitivity technology, applied in the fields of sensors, medical science, diagnosis, etc., can solve problems such as low sensitivity and affecting imaging quality, and achieve the effect of increasing the chance of cure and improving imaging quality

Pending Publication Date: 2021-09-21
FOURTH MILITARY MEDICAL UNIVERSITY
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Problems solved by technology

However, in the actual application process, the head is not a regular model, and the uniform distribution of electrodes will cause the sensitivity of some areas to be too low and affect the imaging quality. We need better imaging quality to help doctors judge the current patient's condition

Method used

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  • EIT sensor design method for optimizing edge sensitivity
  • EIT sensor design method for optimizing edge sensitivity
  • EIT sensor design method for optimizing edge sensitivity

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Embodiment Construction

[0039] A design of an EIT sensor for optimizing edge sensitivity of the present invention will be described in detail with reference to the drawings and embodiments.

[0040] The EIT sensor design method for optimizing the edge sensitivity of the present invention aims at optimizing the edge sensitivity. By changing the position of the electrode, the path of the current is changed, so that the voltage signal changes more significantly on the medium of the edge position. First place all the electrodes on the horizontal plane 3cm above the eyebrows, set the forehead fixed electrode 3 and the back pillow fixed electrode 4, and then group the electrodes into electrode group 1 and electrode group 2, and the electrode arrangement plane is far from the eyebrow plane The spacing 5 is 3cm, such as figure 1 shown. Perform different optimization operations for different regional locations. The specific process is as follows: figure 2 As shown, it specifically includes the following st...

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Abstract

The invention discloses an EIT sensor design method for optimizing edge sensitivity, which comprises the following steps of: firstly, placing n electrodes on a horizontal plane which is 3cm above the two eyebrows of a patient, respectively placing an electrode at the center of the forehead and the center of the occiput as a fixed electrode, and placing the other electrodes at intervals of arc length; performing initial imaging on the patient by taking the uniform electrode arrangement as an initial electrode position, optimizing the electrode positions according to different areas of lesions displayed by imaging, dividing all the electrodes into two groups, respectively moving, and recording and storing RS and BR values; fixing the electrode group close to the lesion position to the optimal position according to the RS and BR values, and after certain data is deleted, fixing the other electrode group away from the lesion position to the optimal position according to the RS and BR values. According to the invention, the imaging quality of the edge position is effectively improved, and more current flows through the target area by changing the electrodes, so that the sensitivity is improved, the imaging BR value is smaller, and the artifacts are fewer.

Description

technical field [0001] The invention belongs to the application field of electrical tomography, and in particular relates to an EIT sensor design method for optimizing edge sensitivity. Background technique [0002] Electrical tomography (Electrical Tomography, ET) is a process tomography technology that uses the sensitive mechanism of electrical characteristics. It uses boundary electrodes to measure voltage information, and inversely deduces the distribution of electrical characteristic parameters inside the measured object through mathematical methods, thereby deriving The distribution of real internal objects. Electrical tomography mainly includes three basic imaging forms, namely electrical capacitance tomography (ECT), electrical resistance tomography (ERT) and electromagnetic tomography (Eletromagnetic Tomography, EMT). Analytical imaging and electrical capacitance tomography may be collectively referred to as electrical impedance tomography (Eletrical Impedance Tomo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0536
CPCA61B5/0536
Inventor 施艳艳田志威付峰杨滨周怡敏刘学超李磊
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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