CN104814736A - Body tissue dielectric property real-time monitoring device and method for obtaining body tissue dielectric property parameters - Google Patents
Body tissue dielectric property real-time monitoring device and method for obtaining body tissue dielectric property parameters Download PDFInfo
- Publication number
- CN104814736A CN104814736A CN201510222241.5A CN201510222241A CN104814736A CN 104814736 A CN104814736 A CN 104814736A CN 201510222241 A CN201510222241 A CN 201510222241A CN 104814736 A CN104814736 A CN 104814736A
- Authority
- CN
- China
- Prior art keywords
- dielectric property
- formula
- directional coupler
- wave signal
- soma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Disclosed are a body tissue dielectric property real-time monitoring device and a method for obtaining body tissue dielectric property parameters through the same. The body tissue dielectric property real-time monitoring device is provided with an electromagnetic wave signal generator, a power distributor, a directional coupler, a coaxial transmission line, an amplitude phase processing unit and a main processor; wideband electromagnetic wave signals are generated by the electromagnetic wave signal generator and distributed by the power distributor to form a reference signal and a test signal, the reference signal is input into the amplitude phase processing unit, and the test signal passes through the directional coupler to be sent to body tissue to be tested through the coaxial transmission line to generate a reflection wave at the position of the body tissue to be tested; the reflection wave signal generated at the tested position is transmitted to the amplitude phase processing unit through the directional coupler, the comparison is performed on the reflection wave signal generated at the tested position and the reference signal, and a compassion result is input to the main processor to obtain the dielectric property of the body tissue through calculation. According to the body tissue dielectric property real-time monitoring device and the method for obtaining the body tissue dielectric property parameters, the noninvasive, simple and efficient monitoring on the dielectric property of the body tissue can be performed in vitro or during operation and the auxiliary judgment on the benignancy and malignancy of the tissue can be performed through the index.
Description
Technical field
The present invention relates to tumor monitoring technical field, particularly relate to a kind of equipment of Real-Time Monitoring tissue dielectric property and obtained the method for tissue dielectric property parameter by this equipment.
Background technology
To the diagnosis of tumor, prior art comprises pathological diagnosis method and diagnostic imaging method.
Pathological diagnosis method, is called as the goldstandard of cancer diagnosis.Its shortcoming checked tissue site must be made into pathological section, and pathological diagnosis cannot realize live body in bulk measurement.
Diagnostic imaging method is by means such as x-ray tomography imaging (CT), nuclear magnetic resonance (MRI), ultra sonic imaging, positron emission tomographies (PET), imaging is carried out to the histoorgan of human body specific part, the difference of contrast normal images and tumor tissues image, judges whether this position may have malignant change.The Common advantages of imaging diagnosis method is can non-invasive diagnosis, and common drawback is limited resolution.In addition, the merits and demerits of various different images means, has nothing in common with each other according to concrete imaging methods difference.The advantage of X ray CT is that image taking speed is fast, and shortcoming has radiation injury; The advantage of MRI is that soft tissue contrast is good, and without radiation injury, shortcoming is that image taking speed is slow; Excusing from death imaging advantages is without radiation injury, and shortcoming is cannot effectively imaging to body internal cavity position etc., because have children outside the state plan, to run into attenuation of air very large; The advantage of PET to check neoplasm metastasis, and shortcoming is radiosiotope damage.
Therefore, not enough for prior art, the means providing a kind of simply real-time live body to carry out the good pernicious monitoring of tissue in body mode are very necessary, such as the present invention propose Real-Time Monitoring tissue dielectric property equipment and adopt this equipment to obtain to be measured organize dielectric property parameter come adjuvant therapy judgement.
Summary of the invention
The object of the invention is to outside prior art, provide a kind of equipment of real-time live body detection in vivo tissue dielectric property, this equipment can obtain the dielectric properties of tissue to be measured in real time.
Object of the present invention is realized by following technical measures.
An equipment for Real-Time Monitoring tissue dielectric property, is provided with electromagnetic wave signal generator, power divider, directional coupler, coaxial transmission line, amplitude-phase processing unit and primary processor;
Described electromagnetic wave signal generator is connected with described power divider signal, first outfan of power divider is connected with the first input end of amplitude-phase processing unit, second outfan of power divider is connected with the first input end signal of directional coupler, directional coupler connects coaxial transmission line, the signal output part of directional coupler is connected with the second input of amplitude-phase processing unit, and the outfan of amplitude-phase processing unit is connected with the input of primary processor;
Described electromagnetic wave signal generator produces broadband electromagnetic wave signal, power divider distributes formation reference signal and test signal to broadband electromagnetic wave signal, reference signal inputs to the first input end of amplitude-phase processing unit, and test signal is sent to soma to be measured through directional coupler by coaxial transmission line and produces echo in soma to be measured; The reflection wave signal that received soma to be measured produces is delivered to the second input of amplitude-phase processing unit by directional coupler, the reflection wave signal that detected part produces by amplitude-phase processing unit and reference signal compare, and input to primary processor and are calculated the dielectric property of detected part tissue by primary processor.
Preferably, above-mentioned primary processor is set to computer primary processor, computer primary processor stores the data base that normal structure and known cancer organize dielectric property, the normal structure set up in advance in the dielectric property result of the measuring point obtained and computer primary processor and known cancer organize the data base of dielectric property to compare by computer primary processor, judge the good pernicious of measuring point tissue.
The equipment of above-mentioned Real-Time Monitoring tissue dielectric property is also provided with probe, and described probe is arranged at the end of affiliated coaxial transmission line.
The matched impedance of above-mentioned probe is 50 ohm, and the diameter of probe is grade.
The electromagnetic wave signal bandwidth that above-mentioned electromagnetic wave signal generator is launched is 1MHz-300GHz.
The dielectric property that above-mentioned primary processor calculates the position of detected part tissue comprises electrical conductivity, dielectric constant or multiple dielectric property parameter.
The equipment of above-mentioned Real-Time Monitoring tissue dielectric property, obtains the dielectric property parameter of detected part tissue especially by such as under type:
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator, produce reference signal by power divider
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line and produce echo in soma to be measured, the reflection wave signal that received soma to be measured produces by directional coupler
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is calculated according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider,
for the coefficient of coup of directional coupler;
B. adopt the method identical with step a, measure the reflection coefficient that the coaxial transmission line of coaxial transmission line under short circuit, open circuit, titer three kinds of states reflexes to directional coupler respectively
;
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the solution of titer to be dielectric property be given data, the multiple dielectric property of titer is
;
D. the dielectric constant of detected part soma is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of soma to be measured
and relative dielectric constant
.
The invention provides a kind of method obtaining the dielectric property parameter of detected part tissue, undertaken by the equipment of above-mentioned Real-Time Monitoring tissue dielectric property, comprise the steps,
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator, produce reference signal by power divider
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line and produce echo in soma to be measured, the reflection wave signal that received soma to be measured produces by directional coupler
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is calculated according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider,
for the coefficient of coup of directional coupler;
B. adopt the method identical with step a, measure the reflection coefficient that the coaxial transmission line of coaxial transmission line under short circuit, open circuit, titer three kinds of states reflexes to directional coupler respectively
;
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the solution of titer to be dielectric property be given data, the multiple dielectric property of titer is
;
D. the dielectric constant of detected part soma is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of detected part soma
and relative dielectric constant
.
The equipment of Real-Time Monitoring tissue dielectric property provided by the invention, is equipped with electromagnetic wave signal generator, power divider, directional coupler, coaxial transmission line, amplitude-phase processing unit and primary processor; Described electromagnetic wave signal generator is connected with described power divider signal, first outfan of power divider is connected with the first input end of amplitude-phase processing unit, second outfan of power divider is connected with the first input end signal of directional coupler, directional coupler connects coaxial transmission line, the signal output part of directional coupler is connected with the second input of amplitude-phase processing unit, and the outfan of amplitude-phase processing unit is connected with the input of primary processor.This equipment does not need to cut into slices to tissue, only needs to treat to detect position and carry out electromagnetic wave signal transmitting, just can obtain the dielectric properties of tissue in real time, not have RADI to detected part, and have easy to operate, detect feature rapidly.Owing to adopting electromagnetic wave test, measured result does not exist to be differentiated rate variance or affects by attenuation factor etc., and measured result is accurate, carrys out adjuvant therapy diagnosis, simple, intuitive according to its dielectric property parameter obtained.
The dielectric property parametric technique of acquisition detected part tissue provided by the invention, the method utilizes the equipment of above-mentioned Real-Time Monitoring tissue dielectric property to carry out, RADI is not had to detected part, and has easy to operate, the dielectric properties parameter of tissue can be obtained in real time.Because the dielectric property comparison in difference of the normal structure tumor tissues corresponding with it is greatly the ubiquitous objective characteristic of people's tissue, the dielectric property parameter therefore adopting this method to obtain carrys out adjuvant therapy diagnosis, simple, intuitive.
Accompanying drawing explanation
The present invention is further illustrated to utilize accompanying drawing, but the content in accompanying drawing does not form any limitation of the invention.
Fig. 1 is the structural representation of the equipment of a kind of Real-Time Monitoring tissue of the present invention dielectric property.
Fig. 2 is the principle schematic of the equipment of a kind of Real-Time Monitoring tissue of the present invention dielectric property.
In Fig. 1, Fig. 2, comprising:
Electromagnetic wave signal generator 100, power divider 200, directional coupler 300,
Coaxial transmission line 400, amplitude-phase processing unit 500 and primary processor 600.
Detailed description of the invention
The invention will be further described with the following Examples.
embodiment 1.
The present embodiment provides a kind of equipment of Real-Time Monitoring tissue dielectric property, as shown in Figure 1 and Figure 2, electromagnetic wave signal generator 100, power divider 200, directional coupler 300, coaxial transmission line 400, amplitude-phase processing unit 500 and primary processor 600 is provided with.
Electromagnetic wave signal generator 100 is connected with power divider 200 signal, first outfan of power divider 200 is connected with the first input end of amplitude-phase processing unit 500, second outfan of power divider 200 is connected with the first input end signal of directional coupler 300, directional coupler 300 is connected with coaxial transmission line 400, the signal output part of directional coupler 300 is connected with the second input of amplitude-phase processing unit 500, and the outfan of amplitude-phase processing unit 500 is connected with the input of primary processor 600.
Electromagnetic wave signal generator 100 produces broadband electromagnetic wave signal, and the electromagnetic wave signal bandwidth that electromagnetic wave signal generator 100 is launched is 1MHz-300GHz.Power divider 200 pairs of broadband electromagnetic wave signals distribute formation reference signal ST1 and test signal ST2, reference signal ST1 inputs to the first input end of amplitude-phase processing unit 500, and test signal ST2 is sent to soma to be measured through directional coupler 300 by coaxial transmission line 400 and produces echo in soma to be measured.The reflection wave signal SM that received detected part produces is delivered to the second input of amplitude-phase processing unit by directional coupler 300, the reflection wave signal SM that detected part produces by amplitude-phase processing unit and reference signal ST1 compares, and inputs to primary processor 600 and is calculated the dielectric property of detected part tissue by primary processor 600.The dielectric property that primary processor 600 calculates detected part tissue comprises electrical conductivity, dielectric constant or multiple dielectric property parameter.
Conveniently operate, this monitoring human organizes good pernicious equipment to be also provided with probe, and probe is arranged at the end of coaxial transmission line 400, and the matched impedance of probe is 50 ohm, and the diameter of probe is grade.During use, only probe need be close to detected part surface, just can be implemented in the dielectric property of vitro real time monitoring detected part tissue.The dielectric property of the soma monitored and the dielectric property of normal structure are compared, because the dielectric property comparison in difference of the normal structure tumor tissues corresponding with it is greatly the ubiquitous objective characteristic of tissue, the good pernicious basis for estimation of this site tissue can be provided for doctor.
The equipment of this Real-Time Monitoring tissue dielectric property obtains the dielectric property of detected part soma, and its operation principle is such:
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator 100, produce reference signal by power divider 200
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line 400 and produce echo in soma to be measured, the reflection wave signal that received detected part produces by directional coupler 300
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is calculated according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider 200,
for the coefficient of coup of directional coupler 300.
B. adopt the method identical with step a, measure the reflection coefficient that the coaxial transmission line of coaxial transmission line under short circuit, open circuit, titer three kinds of states reflexes to directional coupler respectively
, the solution of titer to be dielectric property be given data.
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the solution of titer to be dielectric property be given data, the multiple dielectric property of titer is
.
D. the dielectric constant of soma to be measured is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of soma to be measured
and relative dielectric constant
.
According to operation principle, primary processor 600 is the device that can realize above-mentioned functions, usually can select to be made up of chip, memorizer and control circuit, also can select to adopt computer to process, also can configure that display instrument carries out result display, configure printer carries out result printing as required.
The equipment of Real-Time Monitoring tissue dielectric property of the present invention, do not need to carry out section to prepare just directly to carry out soma's dielectric property monitoring to detected part, can be real-time carry out the monitoring of tissue dielectricity with live body in body mode, in vitro or the monitoring of tissue dielectric property in art, can be carried out.The means of electromagnetic waves adopted, also can not cause RADI to tissue, and also do not need tested tester to carry out any preparation, user experience is very good.In addition, this equipment Inspection time is short, detects rapidly.Owing to adopting electromagnetic wave test, measured result does not exist to be differentiated rate variance or affects by attenuation factor etc., and measured result is accurate and visual.Pass through soma's dielectric properties of obtained detected part, the dielectric property of the dielectric property of the soma monitored and normal structure can compare by doctor, obtains the good pernicious effective foundation judging this site tissue.Because the dielectric property comparison in difference of the normal structure tumor tissues corresponding with it is greatly the ubiquitous objective characteristic of people's tissue, the dielectric property parameter therefore adopting this method to obtain carrys out adjuvant therapy diagnosis, simple, intuitive.
It should be noted that, the equipment of Real-Time Monitoring tissue dielectric property of the present invention, also may be used for the monitoring of animal body tissue dielectric property, diagnoses with adjuvant therapy.
embodiment 2.
A kind of equipment of Real-Time Monitoring tissue dielectric property, further feature is identical with embodiment 1, difference is: primary processor 600 is set to computer primary processor, computer primary processor stores the data base that normal structure and known cancer organize dielectric property, the normal structure set up in advance in the dielectric property result of the measuring point obtained and computer primary processor and known cancer organize the data base of dielectric property to compare by computer primary processor, judge the good pernicious of measuring point tissue.
The dielectric property result of computer primary processor to measuring point compares with the data in data base, can carry out, do not repeat them here by comparator or by software.
Adopt computer primary processor to compare result, there is result accurate, feature more rapidly.
embodiment 3.
A kind of method obtaining the dielectric property parameter of tissue to be measured is provided, utilizes the equipment of the Real-Time Monitoring tissue dielectric property of embodiment 1 to carry out, specifically comprise the steps,
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator 100, produce reference signal by power divider 200
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line 400 and produce echo in soma to be measured, the reflection wave signal that received detected part produces by directional coupler 300
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is obtained according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider 200,
for the coefficient of coup of directional coupler 300;
After electromagnetic wave signal generator 100 produces broadband electromagnetic wave signal, coaxial transmission line 400 reflexes to the reflection coefficient of directional coupler 300
by amplitude-phase processing unit 500 directly by reflection coefficient
be delivered to primary processor 600.
B. adopt the method identical with step a, measure the reflection coefficient reflexed to of coaxial transmission line under short circuit, open circuit, titer three kinds of states respectively
, result is delivered to primary processor 600 by amplitude-phase processing unit 500.
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the multiple dielectric property of titer is
;
D. the dielectric constant of soma to be measured is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of detected part soma
and relative dielectric constant
.
The present invention obtains the method for the dielectric properties of human body detected part tissue by the equipment of Real-Time Monitoring soma dielectric property, do not need to carry out section to prepare just directly to carry out the monitoring of tissue dielectric property to detected part, can be real-time carry out the monitoring of tissue dielectricity with live body in body mode, in vitro or the monitoring of tissue dielectric property in art, can be carried out.The means of electromagnetic waves adopted, also can not cause RADI to tissue, and also do not need tested tester to carry out any preparation, user experience is very good.In addition, this equipment Inspection time is short, detects rapidly.Owing to adopting electromagnetic wave test, measured result does not exist to be differentiated rate variance or affects by attenuation factor etc., and measured result is accurate and visual.Pass through the dielectric properties of obtained detected part tissue, the dielectric property of the dielectric property of the tissue monitored and normal structure can compare by doctor, obtains the good pernicious effective foundation judging this site tissue.Because the dielectric property comparison in difference of the normal structure tumor tissues corresponding with it is greatly the ubiquitous objective characteristic of people's tissue, the dielectric property parameter therefore adopting this method to obtain carrys out adjuvant therapy diagnosis, simple, intuitive.
Also the data base of dielectric property can be organized by setting up normal structure and known cancer in computer primary processor in advance, structure as described in Example 2.Like this, the data base of dielectric property can be organized to compare the normal structure set up in advance in the dielectric property result obtained and computer primary processor 600 and known cancer by computer primary processor 600, judge the good pernicious of measuring point tissue.Rapidly simple to operate.
It should be noted that, method of the present invention also may be used for the monitoring of animal body tissue dielectric property, diagnoses with adjuvant therapy.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (8)
1. an equipment for Real-Time Monitoring tissue dielectric property, is characterized in that: be provided with electromagnetic wave signal generator, power divider, directional coupler, coaxial transmission line, amplitude-phase processing unit and primary processor;
Described electromagnetic wave signal generator is connected with described power divider signal, first outfan of power divider is connected with the first input end of amplitude-phase processing unit, second outfan of power divider is connected with the first input end signal of directional coupler, directional coupler connects coaxial transmission line, the signal output part of directional coupler is connected with the second input of amplitude-phase processing unit, and the outfan of amplitude-phase processing unit is connected with the input of primary processor;
Described electromagnetic wave signal generator produces broadband electromagnetic wave signal, power divider distributes formation reference signal and test signal to broadband electromagnetic wave signal, reference signal inputs to the first input end of amplitude-phase processing unit, and test signal is sent to soma to be measured through directional coupler by coaxial transmission line and produces echo in soma to be measured; The reflection wave signal that received soma to be measured produces is delivered to the second input of amplitude-phase processing unit by directional coupler, the reflection wave signal that detected part produces by amplitude-phase processing unit and reference signal compare, and input to primary processor and are calculated the dielectric property of detected part tissue by primary processor.
2. the equipment of Real-Time Monitoring tissue dielectric property according to claim 1, it is characterized in that: described primary processor is set to computer primary processor, computer primary processor stores the data base that normal structure and known cancer organize dielectric property, the normal structure set up in advance in the dielectric property result of the measuring point obtained and computer primary processor and known cancer organize the data base of dielectric property to compare by computer primary processor, judge the good pernicious of measuring point tissue.
3. the equipment of Real-Time Monitoring tissue dielectric property according to claim 1 and 2, it is characterized in that: be also provided with probe, described probe is arranged at the end of affiliated coaxial transmission line.
4. the equipment of Real-Time Monitoring tissue dielectric property according to claim 3, is characterized in that: the matched impedance of described probe is 50 ohm, and the diameter of probe is grade.
5. the equipment of Real-Time Monitoring tissue dielectric property according to claim 4, is characterized in that: the electromagnetic wave signal bandwidth that described electromagnetic wave signal generator is launched is 1MHz-300GHz.
6. the equipment of Real-Time Monitoring tissue dielectric property according to claim 1 and 2, is characterized in that: the dielectric property that primary processor calculates detected part tissue comprises electrical conductivity, dielectric constant or multiple dielectric property parameter.
7. the equipment of Real-Time Monitoring tissue dielectric property according to claim 1 and 2, is characterized in that: obtain the dielectric property parameter of detected part tissue especially by such as under type:
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator, produce reference signal by power divider
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line and produce echo in soma to be measured, the reflection wave signal that received soma to be measured produces by directional coupler
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is calculated according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider,
for the coefficient of coup of directional coupler;
B. adopt the method identical with step a, measure the reflection coefficient that the coaxial transmission line of coaxial transmission line under short circuit, open circuit, titer three kinds of states reflexes to directional coupler respectively
;
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the solution of titer to be dielectric property be given data, the multiple dielectric property of titer is
;
D. the dielectric constant of detected part soma is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of soma to be measured
and relative dielectric constant
.
8. obtained the dielectric property parametric technique of detected part tissue by the equipment of the Real-Time Monitoring tissue dielectric property described in claim 1 to 7 any one, it is characterized in that: comprise the steps,
A. produce broadband electromagnetic wave signal by electromagnetic wave signal generator, produce reference signal by power divider
and test signal
, test signal
be sent to soma to be measured by coaxial transmission line and produce echo in soma to be measured, the reflection wave signal that received soma to be measured produces by directional coupler
be delivered to the second input of amplitude-phase processing unit, by obtained parameter
,
the reflection coefficient that coaxial transmission line reflexes to directional coupler is calculated according to formula (1)
,
formula (1);
Wherein
,
for the partition coefficient of power divider,
for the coefficient of coup of directional coupler;
B. adopt the method identical with step a, measure the reflection coefficient that the coaxial transmission line of coaxial transmission line under short circuit, open circuit, titer three kinds of states reflexes to directional coupler respectively
;
C. calculate when time measurement radio system dielectric property design factor according to formula (2), formula (3), formula (4)
,
,
,
formula (2);
formula (3);
formula (4);
In formula,
the electrical conductivity of titer,
be the relative dielectric constant of titer, the solution of titer to be dielectric property be given data, the multiple dielectric property of titer is
;
D. the dielectric constant of detected part soma is calculated according to formula (5),
formula (5);
Be separated real part and imaginary part, obtain the equivalent conductivity of detected part soma
and relative dielectric constant
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222241.5A CN104814736B (en) | 2015-05-05 | 2015-05-05 | The method for monitoring the equipment of tissue dielectric property in real time and obtaining tissue dielectric property parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510222241.5A CN104814736B (en) | 2015-05-05 | 2015-05-05 | The method for monitoring the equipment of tissue dielectric property in real time and obtaining tissue dielectric property parameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104814736A true CN104814736A (en) | 2015-08-05 |
| CN104814736B CN104814736B (en) | 2017-07-18 |
Family
ID=53725411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510222241.5A Expired - Fee Related CN104814736B (en) | 2015-05-05 | 2015-05-05 | The method for monitoring the equipment of tissue dielectric property in real time and obtaining tissue dielectric property parameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104814736B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351807A (en) * | 2020-04-18 | 2020-06-30 | 李赞 | Dielectric spectroscopy microscopy using near-field microwaves |
| CN113243904A (en) * | 2021-04-14 | 2021-08-13 | 中国人民解放军空军军医大学 | Non-invasive external wound in-vivo monitoring probe and measuring method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054726A1 (en) * | 1998-04-22 | 1999-10-28 | The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method and device for measuring the amount of ice glaze added to frozen foods |
| US20020067170A1 (en) * | 2000-12-04 | 2002-06-06 | Nec Corporation | Scanning microwave microscope capable of realizing high resolution and microwave resonator |
| CN102508042A (en) * | 2011-10-19 | 2012-06-20 | 中国人民解放军第四军医大学 | Open-ended coaxial probe and method for measuring dielectric spectrum property of biological tissues |
| CN103284764A (en) * | 2006-10-10 | 2013-09-11 | 克里奥医药有限公司 | Surgical device |
| US20140028318A1 (en) * | 2012-07-27 | 2014-01-30 | Schlumberger Technology Corporation | Apparatus and method for measuring dielectic permitivity of cylindrical samples |
| CN103630555A (en) * | 2013-11-21 | 2014-03-12 | 烟台大学 | Method for detecting liquid hazardous substances by adopting microwave multi-frequency-point vector detection |
| CN103948389A (en) * | 2014-05-05 | 2014-07-30 | 南方医科大学 | Method for obtaining electrical performance parameter distribution of human tissues by virtue of magnetic resonance tomography |
| CN104330642A (en) * | 2014-11-12 | 2015-02-04 | 中国人民解放军国防科学技术大学 | Probe for measuring anisotropy dielectric spectrum characteristics of biological tissues and measuring and calculating method thereof |
| CN104352239A (en) * | 2014-11-18 | 2015-02-18 | 辛学刚 | Magnetic resonance human tissue electrical characteristic tomography method |
| US20150073403A1 (en) * | 2009-12-18 | 2015-03-12 | Covidien Lp | Microwave ablation system with dielectric temperature probe |
-
2015
- 2015-05-05 CN CN201510222241.5A patent/CN104814736B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054726A1 (en) * | 1998-04-22 | 1999-10-28 | The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Method and device for measuring the amount of ice glaze added to frozen foods |
| US20020067170A1 (en) * | 2000-12-04 | 2002-06-06 | Nec Corporation | Scanning microwave microscope capable of realizing high resolution and microwave resonator |
| CN103284764A (en) * | 2006-10-10 | 2013-09-11 | 克里奥医药有限公司 | Surgical device |
| US20150073403A1 (en) * | 2009-12-18 | 2015-03-12 | Covidien Lp | Microwave ablation system with dielectric temperature probe |
| CN102508042A (en) * | 2011-10-19 | 2012-06-20 | 中国人民解放军第四军医大学 | Open-ended coaxial probe and method for measuring dielectric spectrum property of biological tissues |
| US20140028318A1 (en) * | 2012-07-27 | 2014-01-30 | Schlumberger Technology Corporation | Apparatus and method for measuring dielectic permitivity of cylindrical samples |
| CN103630555A (en) * | 2013-11-21 | 2014-03-12 | 烟台大学 | Method for detecting liquid hazardous substances by adopting microwave multi-frequency-point vector detection |
| CN103948389A (en) * | 2014-05-05 | 2014-07-30 | 南方医科大学 | Method for obtaining electrical performance parameter distribution of human tissues by virtue of magnetic resonance tomography |
| CN104330642A (en) * | 2014-11-12 | 2015-02-04 | 中国人民解放军国防科学技术大学 | Probe for measuring anisotropy dielectric spectrum characteristics of biological tissues and measuring and calculating method thereof |
| CN104352239A (en) * | 2014-11-18 | 2015-02-18 | 辛学刚 | Magnetic resonance human tissue electrical characteristic tomography method |
Non-Patent Citations (2)
| Title |
|---|
| PIER B等: "PERMITTIVITY MEASUREMENTS OF BIOLOGICAL samples by an open-ended coaxial line", 《PROGRESS IN ELECTROMAGNETICS RESEARCH B》 * |
| 辛学刚等: "一种实现术中实时在体组织良恶性鉴别检测的创新医疗设备系统", 《中国医疗设备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351807A (en) * | 2020-04-18 | 2020-06-30 | 李赞 | Dielectric spectroscopy microscopy using near-field microwaves |
| CN113243904A (en) * | 2021-04-14 | 2021-08-13 | 中国人民解放军空军军医大学 | Non-invasive external wound in-vivo monitoring probe and measuring method |
| CN113243904B (en) * | 2021-04-14 | 2024-05-17 | 中国人民解放军空军军医大学 | Non-invasive in-vitro wound monitoring probe and measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104814736B (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6518502B2 (en) | Magnetic resonance apparatus having motion detection unit and method for detecting patient motion during magnetic resonance examination | |
| US8886291B2 (en) | Systems and methods for combined ultrasound and electrical impedance imaging | |
| Rezaeieh et al. | Microwave system for the early stage detection of congestive heart failure | |
| KR101307514B1 (en) | Microwave image reconstruction apparatus | |
| US20170143231A1 (en) | Monitoring the body using microwaves | |
| CN105832331B (en) | Non-contact cerebral hemorrhage detection device and its detection method based on broadband antenna technology | |
| CN104814736A (en) | Body tissue dielectric property real-time monitoring device and method for obtaining body tissue dielectric property parameters | |
| CN104661591B (en) | For testing the device of breast tissue integrality | |
| JP6651012B2 (en) | Method, apparatus, and computer readable medium for assessing fit in a system for probing the internal structure of an object | |
| KR101016747B1 (en) | Diagnosis Equipment of Breast Tumor Using Electromagnetic Wave and Diagnosis Method of The Same | |
| CN114173677A (en) | Hybrid medical imaging probe, apparatus and procedure | |
| Abbosh et al. | Microwave techniques as diagnostic tool for congestive heart failure | |
| Alexopoulos et al. | Standoff tracking of medical interventional devices using non-contact microwave thermoacoustic detection | |
| Sultan et al. | Handheld Electromagnetic Scanner for Deep Vein Thrombosis Detection and Monitoring | |
| Ding et al. | A Microwave Tomography System For Ischemic Stroke Based on Distorted Born Iterative Method | |
| KR101380788B1 (en) | Lung cancer diagnostic device using pulsed wave and method of the same | |
| Jamlos et al. | Improved confocal microwave imaging algorithm for tumor detection | |
| Bialkowski et al. | Low-cost microwave biomedical imaging | |
| Joof et al. | Tissue mimicking phantoms for microwave brain stroke imaging | |
| US20240194349A1 (en) | Apparatus and process for medical sensing | |
| WO2023133516A1 (en) | Flexible radiofrequency (rf) coil for small field-of-view magnetic resonance imaging (mri) | |
| CN115644839A (en) | Diagnostic method, apparatus and computer-readable storage medium | |
| Rezaeieh et al. | Effects of antenna characteristics on performance of microwave based system designed for early stage congestive heart failure detection | |
| KR20180079742A (en) | Minimally invasive cancer diagnosis system and method using electromagnatic wave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 |