CN105997096B - Electrical impedance tomography lung imaging method based on 3D accelerometer - Google Patents

Electrical impedance tomography lung imaging method based on 3D accelerometer Download PDF

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Publication number
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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China
Prior art keywords
3d accelerometer
information
electrical impedance
posture
impedance tomography
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CN201610457400.4A
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Chinese (zh)
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CN105997096A (en
Inventor
丁天赦
方建新
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合肥诺和电子科技有限公司
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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

Electrical impedance tomography lung imaging method based on 3D accelerometer

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.
CN201610457400.4A 2016-06-22 2016-06-22 Electrical impedance tomography lung imaging method based on 3D accelerometer CN105997096B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2522006C (en) * 2003-04-10 2013-05-28 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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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