CN105997096B - Electrical impedance tomography lung imaging method based on 3D accelerometer - Google Patents
Electrical impedance tomography lung imaging method based on 3D accelerometer Download PDFInfo
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- CN105997096B CN105997096B CN201610457400.4A CN201610457400A CN105997096B CN 105997096 B CN105997096 B CN 105997096B CN 201610457400 A CN201610457400 A CN 201610457400A CN 105997096 B CN105997096 B CN 105997096B
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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
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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
- A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
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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
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
- A61B5/1114—Tracking parts of the body
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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
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1116—Determining posture transitions
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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
- A61B5/68—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
- A61B5/6804—Garments; Clothes
- A61B5/6805—Vests
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2576/00—Medical imaging apparatus involving image processing or analysis
- A61B2576/02—Medical imaging apparatus involving image processing or analysis specially adapted for a particular organ or body part
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Abstract
The invention discloses a kind of electrical impedance tomography lung imaging method based on 3D accelerometer, the 3D accelerometer posture position information that acquires personnel to be detected in real time first, and it is transferred to the controller of electrical impedance tomography lung imaging system together in conjunction with front electrode information, controller judges whether location information changes according to posture position information, when changing, new location information is input in figure synthetic model, to obtain new figure composition algorithm, then by the electrode information input currently acquired into new figure composition algorithm, form image file, finally image file is handled to obtain the fault image of lung function, terminal is shown.The present invention acquires posture position information using 3D accelerometer in real time, doctor does not need frequently to input relevant posture information manually, and 3D accelerometer counting accuracy is high, guarantees that monitoring process is continuous, solve the problems, such as in long-time monitoring process because patient voluntarily changes posture cause it is inaccurate.
Description
Technical field
The present invention relates to electrical impedance tomography lung imaging system field, specifically a kind of electrical impedance tomographies based on 3D accelerometer
Lung imaging method.
Background technique
Bio-electrical impedance imaging technology is the electrical characteristics and its variation using biological tissue or organ, is extracted and pathology shape
The relevant biomedical information of condition is the Yu Jin 20 years functional imaging technologies of new generation occurred after form, structure imaging,
Has many advantages, such as noninvasive, continuous, radiationless, fast response time, low in cost.Bio-electrical impedance tomography lung imaging system principle is
Enter human body by injecting weak alternating current, electric current can be flowed along the smallest path of resistance, thus be formed in body surface
Current potential carries out test constantly to current potential using electrode, then converts it into the fault image of lung function.
Impedance tomography (EIT) lung imaging system is mainly used for the lung image of noninvasive continuous monitoring patient.Main application exists
Operating room and the room ICU.One feature in these places is that the time of monitoring is long, and patient's posture is uncertain；In addition these there are also another
An outer feature is that patient belongs to mechanical ventilation, and this ventilating mode can have an impact end-expiratory positive pressure (PEEP).Traditional
Impedance tomography (EIT) lung imaging system is typically all the doctor in such a way that doctor is manually entered to the adjustment of the posture of patient
Estimation angle according to current pose relative to the posture normally to lie low voluntarily, while determining that posture requires again later every time
Modelling evaluation calculates, and this mode can mainly cause following problem: 1, the attitude data input of doctor be not it is very accurate,
It is all voluntarily to be estimated by doctor, error is very big；2, in the course of surgery or ICU monitoring process patient may be frequent
Property replacement posture, posture change just needs doctor timely to re-enter at this time, make troubles to using；3, traditional equipment
Modeling Calculation is required again after input posture information every time to really be imaged, causes not enough to connect in monitoring process
It is continuous；4, because the period is very long inside the room ICU, patient posture changes sometimes but equipment fails to timely update, the company of causing
The accuracy of continuous monitoring is inadequate.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electrical impedance tomography lung imaging method based on 3D accelerometer,
In normal monitoring process, system can read the location information of 3D accelerometer while reading electrode data in real time, by position
Confidence breath is input in figure synthetic model, to obtain new figure composition algorithm, is carried out according to new figure composition algorithm
The reconstruction of the fault image of lung function.
The technical solution of the present invention is as follows:
Electrical impedance tomography lung imaging method based on 3D accelerometer, it is characterised in that: first 3D accelerometer acquire in real time to
The posture position information of testing staff, and combination front electrode information is transferred to the control of electrical impedance tomography lung imaging system together
Device, controller judges whether location information changes according to posture position information, and when changing, new location information is inputted
Into figure synthetic model, to obtain new figure composition algorithm, then by the electrode information input currently acquired to new
In figure composition algorithm, form image file, finally handled to obtain the fault image of lung function to image file, terminal into
Row display.
The electrode information is acquired using contactless electric impedance sensor, and the contactless electrical impedance passes
Sensor is set in detection vest, and the 3D accelerometer is installed in contactless electric impedance sensor, in electrical impedance tomography
After lung imaging system powers on, the location information of 3D accelerometer is obtained, adjusts 3D accelerometer in contactless electric impedance sensor
Position until the suitable installation site of determination and fixation, suitable installation site, that is, contactless electric impedance sensor of 3D accelerometer
Middle position.
When no change has taken place for the posture position information, electrode information input that controller directly will be acquired currently
Into existing figure composition algorithm, image file is formed, image procossing finally is carried out to image file, terminal is shown i.e.
It can.
Advantages of the present invention:
(1), posture position information is acquired using 3D accelerometer in real time, doctor does not need manually to input relevant posture letter
The angle information of breath, posture is high by the counting accuracy of 3D accelerometer voluntarily；
(2), 3D accelerometer automatically tracks attitudes vibration in monitoring process, without frequently carrying out the input of information；
(3), the real-time tracing positional information of 3D accelerometer, figure composition algorithm is adjusted according to location information in real time, makes to supervise
Shield process is continuous；
(4), the present invention is solved in long-time monitoring process by real-time Attitude Tracking because patient voluntarily changes posture
And cause inaccurate problem.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
See Fig. 1, the electrical impedance tomography lung imaging method based on 3D accelerometer, first in electrical impedance tomography lung imaging system
After electricity, the location information of 3D accelerometer is obtained, adjusts position of the 3D accelerometer in contactless electric impedance sensor until true
Fixed suitable installation site and fixation, contactless electric impedance sensor are set in detection vest, the suitable installation of 3D accelerometer
Position, that is, contactless electric impedance sensor middle position,；In test, it will test vest and be through on the body of detected personnel,
3D accelerometer acquires the posture position information of personnel to be detected in real time, contactless electric impedance sensor acquisition electrode information, so
Posture position information and electrode information are transferred to the controller of electrical impedance tomography lung imaging system together afterwards, and controller is according to posture
Location information judges whether location information changes, and when changing, new location information is input in figure synthetic model,
To obtain new figure composition algorithm, then by the electrode information input currently acquired into new figure composition algorithm, shape
At image file, finally image file is handled to obtain the fault image of lung function, terminal is shown；Work as posture
For location information when no change has taken place, controller is directly by the electrode information input currently acquired to existing figure composition algorithm
In, image file is formed, image procossing finally is carried out to image file, terminal is shown.
Wherein, 3D accelerometer is installed in contactless electric impedance sensor.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (2)
1. the electrical impedance tomography lung imaging method based on 3D accelerometer, it is characterised in that: 3D accelerometer acquires to be checked in real time first
The posture position information of survey personnel, and combination front electrode information is transferred to the control of electrical impedance tomography lung imaging system together
Device, controller judges whether location information changes according to posture position information, and when changing, new location information is inputted
Into figure synthetic model, to obtain new figure composition algorithm, then by the electrode information input currently acquired to new
In figure composition algorithm, form image file, finally handled to obtain the fault image of lung function to image file, terminal into
Row display；When no change has taken place for posture position information, controller directly arrives the electrode information input currently acquired
In existing figure composition algorithm, image file is formed, image procossing finally is carried out to image file, terminal is shown i.e.
It can.
2. the electrical impedance tomography lung imaging method according to claim 1 based on 3D accelerometer, it is characterised in that: described
Electrode information is acquired using contactless electric impedance sensor, and the contactless electric impedance sensor is set to detection
In vest, the 3D accelerometer is installed in contactless electric impedance sensor, is powered in electrical impedance tomography lung imaging system
Afterwards, the location information of 3D accelerometer is obtained, adjusts position of the 3D accelerometer in contactless electric impedance sensor until determination
Suitable installation site and fixation, suitable installation site, that is, contactless electric impedance sensor middle position of 3D accelerometer.
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| CN114847913B (en) * | 2022-04-14 | 2023-10-27 | 四川大学华西医院 | Bioelectrical impedance tomography device and bioelectrical impedance tomography method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564294A (en) * | 2009-06-01 | 2009-10-28 | 中国人民解放军第四军医大学 | Method for structural information fused electrical impedance tomography |
| CN103153180A (en) * | 2010-10-07 | 2013-06-12 | 斯威斯托姆公开股份有限公司 | Sensor device for electrical impedance tomography imaging, electrical impedance tomography imaging intrument and electrical impedance tomography method |
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| WO2004091503A2 (en) * | 2003-04-10 | 2004-10-28 | Vivometrics, Inc. | Systems and methods for respiratory event detection |
| US9066659B2 (en) * | 2011-04-08 | 2015-06-30 | Cardiac Pacemakers, Inc. | Transient sensor response to posture as a measure of patient status |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564294A (en) * | 2009-06-01 | 2009-10-28 | 中国人民解放军第四军医大学 | Method for structural information fused electrical impedance tomography |
| CN103153180A (en) * | 2010-10-07 | 2013-06-12 | 斯威斯托姆公开股份有限公司 | Sensor device for electrical impedance tomography imaging, electrical impedance tomography imaging intrument and electrical impedance tomography method |
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