CN109199384A - A kind of incomplete electrode band for torso model EIT imaging - Google Patents
A kind of incomplete electrode band for torso model EIT imaging Download PDFInfo
- Publication number
- CN109199384A CN109199384A CN201810798047.5A CN201810798047A CN109199384A CN 109199384 A CN109199384 A CN 109199384A CN 201810798047 A CN201810798047 A CN 201810798047A CN 109199384 A CN109199384 A CN 109199384A
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- China
- Prior art keywords
- electrode
- belt
- incomplete
- main part
- electrode group
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0536—Impedance imaging, e.g. by tomography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
Abstract
The present invention relates to a kind of incomplete electrode bands for torso model EIT imaging, including belt, electrode group and binding post, it is characterized in that, the belt is divided into continuous three parts: for fixing end, the main part for fixing electrode group and the other end for fixing button female thread of button pin thread, each electrode of electrode group is evenly distributed on the main part of belt, and the length of the main part of belt is depending on the age of gauger and posture.
Description
Technical field
The present invention relates to a kind of incomplete electrode bands for torso model EIT imaging.
Background technique
Electrical impedance tomography (Electrical Impedance Tomography, EIT) technology, with Theory of Electromagnetic Field
Based on, have many advantages, such as visualization, radiationless and fast response time.In torso model EIT imaging process, in body surface
Arrange equally distributed electrod-array, the current signal by applying safety to body surface electrode motivates, and obtains remaining sensing
Measurement value of electrical signals on device, inverting reconstruct the electrical impedance variation that inside of human body tissue and organ are occurred.
Currently, EIT technology all has very great meaning in terms of the early diagnosis of many diseases, daily generaI investigation, very
The scholar of multinational family is being engaged in relevant research work, but EIT Technique Popularizing is applied in practical medical monitoring, also
Some critical issues are badly in need of solving, and one of critical issue seeks to solve the problems, such as dynamic measurement, since the thoracic cavity of human body is
Irregular, the thoracic cavity size of different crowd is also different, and in respiratory, and the shape and size in thoracic cavity are all dynamics
Variation, conventional measuring methods are difficult to ensure the uniformity between electrode；After continually changing electrode duty ratio also requires simultaneously
Timely update sensitivity matrix in continuous imaging algorithm, this is difficult to realize in practical applications, also proposes to measurement method higher
Requirement.
It is by manually being carried out to the method that measured's chest pastes electrocardioelectrode one by one currently in the laboratory research stage
Measurement, this method have the following deficiencies: that not can guarantee electrod-array is uniformly distributed；It is inconvenient for operation, it every time will be according to quilt
The actual conditions for surveying object are manually pasted；The duty ratio that different busts will lead to electrod-array changes, and needs weight
New meter sensitivity matrix.
Summary of the invention
The object of the present invention is to provide a kind of incomplete electrode bands for thoracic cavity EIT imaging, it may be convenient to realize electricity
The wearing of pole sensor, and in measurement process guarantee electrode be uniformly distributed and all electrodes are always positioned at same plane, Gu
Fixed electrode duty ratio avoids recalculating for sensitivity matrix, improves real-time, can meet different bust crowds simultaneously
Needs.To achieve the above object, the present invention takes following technical scheme:
A kind of incomplete electrode band for torso model EIT imaging, including belt, electrode group and binding post, feature
It is, the belt is divided into continuous three parts: the end for fixing button pin thread, the main body for fixing electrode group
Part and the other end for fixing button female thread, each electrode of electrode group are evenly distributed on the main part of belt, skin
The length of the main part of band is depending on the age of gauger and posture.
Preferably, the main part of belt is not less than 85% to the covering in thoracic cavity.
The invention adopts the above technical scheme, which has the following advantages:
1, the number, size and size of system sensor are fixed, and are uniformly mounted on a belt, be ensure that
Uniformity and consistency between electrode, and convenient for wearing.
2, using incomplete electrodes measurement method, i.e., do not require electrod-array that thoracic cavity is completely covered, so same
Sets of data acquisition system, applicable different measurement object (thoracic cavity is of different sizes).
3, since the spacing between electrode is fixed, therefore the duty ratio of electrod-array will not be sent out in dynamic measurement process
Changing does not need to recalculate sensitivity matrix in subsequent reconstruction algorithm, improves temporal resolution and the space point of imaging
Resolution.
4, due to all electrodes be it is integrated, in measurement to electrode band carry out rotation process be easier to realize, according to endless
Full electrode covers thoracic cavity range, suitably rotates by a certain angle, available more multiple measuring values, and then obtains the figure of higher resolution
Picture.
5, the incomplete electrodes measurement method can be not only used for human testing, can be used for other tested field domain sizes
Unfixed situation, such as trees flaw detection (tree diameters are different).
Detailed description of the invention
The incomplete electrode measurement mode feasibility analysis of Fig. 1.
The incomplete electrode band front schematic view of Fig. 2.
The incomplete electrode band side schematic view of Fig. 3.
The incomplete electrode band instrumentation plan of Fig. 4.
Figure label explanation:
1-- soft leather band, is divided into 1-1,1-2,1-3
1-1 fixes electrode group belt
1-2 fixes button public affairs mouth belt
1-3 fixes button mother mouth belt
2-- electrode
3-- button public affairs mouth
4-- button mother's mouth
5-- binding post
6-- simulates thoracic cavity
Specific embodiment
Of the invention is described in detail with reference to the accompanying drawings and examples.
Using and measuring in order to facilitate thoracic cavity EIT devises a kind of wearable thoracic cavity EIT sensor, using incomplete
Electrodes measurement method.As shown in Figure 1, the electrod-array of i.e. fixed number is mounted on a belt, composition one is wearable
Incomplete electrode sensor.
Referring to figs. 2 and 3, the incomplete measuring electrode band that the present invention designs is mainly by soft leather band 1, electrode group 2, button
Male mouth 3, button mother mouth 4 and binding post 5 form.
Fig. 2 is incomplete electrode band front schematic view, and soft leather band 1 includes three parts (1-1,1-2,1-3, this three parts
It is integrated), wherein 1-1 is for fixing electrode group, and 1-2 is for fixing button public affairs mouth, and 1-3 is for fixing five button mothers
Mouthful, the length of 1-2 and 1-3 be it is fixed, the length of 1-1 is related with model；(totally 16, electrode shape can be circle to electrode 2
Or other shapes) be uniformly fixed on 1-1, the spacing between adjacent electrode 2 is x, and according to the difference for using crowd, x is settable
It for several different values, such as can by age divide are as follows: two kinds of crowds of child and adult, every kind of crowd can be refined as marking again
Quasi- figure, inclined thin and endomorphy type, such x can design 6 kinds of models, and the corresponding 1-1 length of different model is different, actually makes
In, according to the age of measured and posture, suitable model is selected.3,4 be one-to-many button pair, and 3 be public mouth, Gu
Due on 1-2,4 be five identical female mouths, is fixed on 1-3.
Fig. 3 is incomplete electrode band side schematic view, and button public affairs mouth 3 and electrode group 2 are located at electrode band the same side, and button is female
Mouth 4 and binding post are located at the electrode band other side.In use, charging pole-face on incomplete electrode band latch closure to measured thoracic cavity
Close to thoracic cavity skin, male mouth 3 is anchored on female mouth 4 of suitable position according to measured's bust size, according to the age of measured
And posture, the electrode band of suitable types is selected, electrode band meets 85% or more to the covering in thoracic cavity and meets the requirements (the public mouth of guarantee
3 at least want to be anchored on outermost mother mouth 4).
As shown in figure 4, in the case where thoracic cavity is not completely covered in electrode group, since 1-1 length is fixed, so
It can guarantee the uniformity between electrode in entire measurement process, and can guarantee that electrode duty ratio is fixed and invariable.In addition by
Be in electrode band it is integrated, in actual measurement, to electrode band carry out rotation process be easier to realize, covered according to incomplete electrode
Lid thoracic cavity range, suitably rotates by a certain angle, available more multiple measuring values, can be with by Data Fusion in subsequent algorithm
Obtain the image of higher resolution.
In practical applications, it is contemplated that requirement of real-time is not updated sensitivity matrix in some application fields, this
It requires that the measurement method taken is the smaller the better to the change of sensitivity, using incomplete electrode measurement, can reduce as far as possible dynamic
Influence in state measurement to sensitivity matrix.We are verified by feasibility of the emulation experiment to incomplete electrode, at
As algorithm use more classical sensitivity coefficient method and TR (Tikhonov regularization) algorithm, such as Fig. 1 institute
Show, the complete electrode measurement mode that the second row uses, TR algorithm can correctly reflect position and the size of target, and sensitivity coefficient is calculated
Method artifact is larger.The incomplete electrode measurement mode that the third line and fourth line use, electrode coverage rate are respectively 83% and 67%,
As can be seen that imaging effect and complete electrode measurement mode are almost the same, the feasibility of incomplete electrode is shown.Coverage rate is
67% image effect is less better with respect to 83%, as long as meeting electrode coverage rate in, (length of 1-1 is divided by bust
Length) 85% or more, so that it may guarantee the precision of imaging.
Claims (2)
1. a kind of incomplete electrode band for torso model EIT imaging, including belt, electrode group and binding post, feature exist
In the belt is divided into continuous three parts: the end for fixing button pin thread, the main part for fixing electrode group
Divide and the other end for fixing button female thread, each electrode of electrode group are evenly distributed on the main part of belt, belt
Main part length depending on the age of gauger and posture.
2. electrode band according to claim 1, which is characterized in that the main part of belt is not less than the covering in thoracic cavity
85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810798047.5A CN109199384A (en) | 2018-07-19 | 2018-07-19 | A kind of incomplete electrode band for torso model EIT imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810798047.5A CN109199384A (en) | 2018-07-19 | 2018-07-19 | A kind of incomplete electrode band for torso model EIT imaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109199384A true CN109199384A (en) | 2019-01-15 |
Family
ID=64990065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810798047.5A Pending CN109199384A (en) | 2018-07-19 | 2018-07-19 | A kind of incomplete electrode band for torso model EIT imaging |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340847A (en) * | 2005-12-20 | 2009-01-07 | Dixtal生物制药工业贸易有限公司 | Electrode assembly for electrical impedance tomography |
| CN102697499A (en) * | 2012-06-08 | 2012-10-03 | 思澜科技（成都）有限公司 | Electrode band for electrical impedance tomography and using method thereof |
| CN105559781A (en) * | 2016-02-01 | 2016-05-11 | 北京理工大学 | ZYNQ-based portable human body impedance real-time imaging device capable of being worn during exercise |
-
2018
- 2018-07-19 CN CN201810798047.5A patent/CN109199384A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340847A (en) * | 2005-12-20 | 2009-01-07 | Dixtal生物制药工业贸易有限公司 | Electrode assembly for electrical impedance tomography |
| CN102697499A (en) * | 2012-06-08 | 2012-10-03 | 思澜科技（成都）有限公司 | Electrode band for electrical impedance tomography and using method thereof |
| CN105559781A (en) * | 2016-02-01 | 2016-05-11 | 北京理工大学 | ZYNQ-based portable human body impedance real-time imaging device capable of being worn during exercise |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |
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