CN206526064U - A kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe - Google Patents
A kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe Download PDFInfo
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- CN206526064U CN206526064U CN201621040322.XU CN201621040322U CN206526064U CN 206526064 U CN206526064 U CN 206526064U CN 201621040322 U CN201621040322 U CN 201621040322U CN 206526064 U CN206526064 U CN 206526064U
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- ultrasonic
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Abstract
The utility model belongs to Medical Instruments technical field, is specially the ultrasonic sclerotin diagnostic system of the back scattering based on array probe.The utility model system includes：Arm processor, FPGA, LCD display, multichannel analog to digital conversion circuit, multichannel high_voltage isolation receiving circuit, multichannel high-voltage pulse radiating circuit, pressure sensor detection circuit, integrative ultrasonic probe.The utility model is detected using the ultrasonic array probe of integration to sclerotin, each miniature ultrasonic transducer in array distinguishes excitation ultrasound pulse and receives backscatter signal, complete the sclerotin detection of each location point, then the diagnostic result of each point is averaged by processor again, so as to improve the degree of accuracy and the stability of measurement data；On the other hand, around ultrasonic probe array add pressure sensor circuit, detection ultrasonic probe and detected part between pressure, only when the pressure value within the limits prescribed when carry out ultrasound detection, so as to improve the stability of diagnostic result.
Description
Technical field
The utility model belongs to Medical Instruments technical field, and in particular to a kind of ultrasonic bone of the back scattering based on array probe
Matter diagnostic system.
Background technology
Ultrasound because its it is distinctive it is lossless, without ionising radiation, real-time, inexpensive and portable etc. advantage, it is considered to be sclerotin is diagnosed
The method of great potential.The Ultrasonic Diagnosis method of sclerotin is broadly divided into Ultrasonic logging method and back dispersion method.Ultrasonic logging method develops
It is relatively early, it is widely used at present, and MEASUREMENT OF ULTRASONIC BACKSCATTERING method is increasingly paid close attention to by researcher in recent years.With transmission
Method is compared, and MEASUREMENT OF ULTRASONIC BACKSCATTERING method has the advantage that：Back dispersion method can reflect bone micro-structure information；Single ultrasound is only needed to visit
Head is received and dispatched needs a hair one to receive two probes like that rather than transmission beam method；It can not only be measured at human body calcaneum,
It can also be measured in other skeletal sites.But among actual use process, either Ultrasonic logging method, or the ultrasound back of the body dissipate
Method is penetrated, its measurement result is all influenceed by probe laminate pressure, putting position to a certain extent.The back of the body is carried out at calcaneum to dissipate
When penetrating method detection, if probe is fitted not close with ankle, correct ultrasonic backscattered signal can not be received；And if visited
The pressure that head is fitted with ankle is excessive, then can change the thickness and density of soft tissue, also have to the result of detection of backscatter signal
A certain degree of influence.On the other hand, because the bone micro-structure, soft tissue thickness, density of calcaneum diverse location point are all slightly poor
It is different, therefore there are some differences in the testing result of diverse location point.Above-mentioned two reason reduces the detection of MEASUREMENT OF ULTRASONIC BACKSCATTERING method
The degree of accuracy and stability.
The content of the invention
The purpose of this utility model is that a kind of ultrasonic sclerotin of the back scattering that the degree of accuracy is high, stability is good for providing detection is examined
Disconnected system.
The ultrasonic sclerotin diagnostic system of back scattering that the utility model is provided, be based on array probe, including：ARM processing
Device, FPGA, LCD display, multichannel analog to digital conversion circuit, multichannel high_voltage isolation receiving circuit, multichannel high-voltage pulse radiating circuit,
Pressure sensor detection circuit, integrative ultrasonic probe；Wherein：
The integrative ultrasonic probe is by probing shell protective layer, miniature ultrasonic linear transducer array, pressure sensor and coupling
Liquid is constituted.Miniature ultrasonic linear transducer array is enclosed in the probing shell protective layer full of coupling liquid, and each miniature ultrasonic is visited
Head can independently send, receive ultrasonic signal；Pressure sensor is buried below the probing shell protective layer of outer ring, for examining
The pressure surveyed between integrative ultrasonic probe and bone sample to be measured.Wherein, ultrasonic probe number N, can be 5-25, a reality
Apply in example is 9；Probe is arranged in symmetrical figure in ultrasonic probe array.
The pressure sensor detection circuit is used to measure the impedance between pressure sensor electrode, so as to detect pressure
Value, and data signal is converted into by analog to digital conversion circuit；FPGA reads the pressure value, and by bus transfer to ARM
Processor.Arm processor shows the pressure value over the display, and points out user to adjust in the pressure to correct scope.
Runs software program on the arm processor, is controlled to FPGA by high speed bus interface and obtains data；
FPGA control pressure sensor detection circuits first obtain the pressure value of integrative ultrasonic detecting head surface, and arm processor should
Pressure value is shown on the interface of LCD display, with the pressure pointed out user to increase or reduce laminating of popping one's head in；When pressure value exists
When in correct scope, FPGA control multichannel high-voltage pulse radiating circuits drive each miniature ultrasonic probe to send ultrasonic wave successively
Pulse signal, and control the high_voltage isolation receiving circuit and high-speed A/D conversion circuit collection backscatter signal of respective channels；
Each road ultrasonic backscattered signal received is uploaded to arm processor by FPGA by high-speed bus.
The course of work is as follows with principle：When the pressure value that pressure sensor detection circuit is detected is in correct scope,
FPGA control multichannel high-voltage pulse radiating circuits control first miniature ultrasonic transducer to send ultrasonic pulse pumping signal；This surpasses
Sound wave is by the interface between miniature ultrasonic transducer and coupling liquid, then passes through the boundary between coupling liquid and probe protective layer
Face, then penetrates ultrasonic coupling agent and reaches bone sample to be measured；Back scattering occurs in bone sample for ultrasonic wave, and the back scattering of generation is returned
Ripple signal penetrates ultrasonic coupling agent, then by the interface between protective layer and coupling liquid of popping one's head in, then by coupling liquid with
Interface between miniature ultrasonic transducer, electric signal is received and converted to by miniature ultrasonic transducer.FPGA controls multichannel high pressure
Isolate receiving circuit and receive the signal of respective channel, and be filtered, amplify, then control the correspondence in multichannel analog to digital conversion circuit
Passage carries out analog-to-digital conversion, gathers the backscatter signal of this passage.Then, FPGA repeats said process, controls other to lead to successively
The signal of road miniature ultrasonic probe is sent with receiving.
After all ultrasonic backscattered signals of N number of passage are collected, FPGA sends these signals by high-speed bus
To arm processor.The backscatter signal that arm processor is received to each miniature ultrasonic probe, calculates the apparent integration back of the body respectively
Scattering coefficient（AIB）, back scattering spectral centroid skew（SCS）, backscattering coefficient（BSC）Etc. multiple backscatter parameters, and to this
The result of calculation of a little miniature ultrasonic probe passages is averaged, and the backscatter parameters after foundation is average are paid a home visit to sclerotin situation
It is disconnected, and show on an lcd display.
Novelty of the present utility model is：1）Sclerotin is detected using ultrasonic array probe, it is each in array
Miniature ultrasonic transducer distinguishes excitation ultrasound pulse and receives backscatter signal, carries out sclerotin detection to each location point respectively,
Then the diagnostic result of each point is averaged by arm processor again, so as to improve the degree of accuracy and the stability of measurement data.2）
Pressure sensor circuit, the pressure between detection ultrasonic probe and detected part, only when this are used around ultrasonic probe array
Pressure value within the limits prescribed when carry out ultrasound detection, so as to improve the stability of diagnostic result.
The utility model is very different with the existing supersonic array imaging device based on ultrasonic reflection principle.It is existing
Imaging device based on supersonic array, is by the measuring targets transmitting ultrasonic wave on each point, then by reflection wave signal
Amplitude be converted to pixel value, so as to be imaged.The technology with only the amplitude of reflection wave signal this single mark
Measure information.And during each miniature ultrasonic probe of the utility model in use supersonic array, acquisition is complete back scattering
Waveform, backscatter parameters are gone out by whole waveshape.The utility model uses supersonic array, is in order to multiple diverse location points
The result of detection carries out zone leveling, so as to improve the degree of accuracy and the stability of back dispersion method detection.In addition, the utility model is adopted
With pressure sensor to detect the pressure between integrative ultrasonic probe and testee, so as to ensure laminating pressure during detection every time
Power in the reasonable scope, improves the stability and repeatability of detection.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structure chart of the ultrasonic sclerotin diagnostic system of back scattering based on linear transducer array of the present utility model.
Fig. 2 is the structure chart of the integrative ultrasonic probe in the utility model.It is clear to map in Fig. 2, only draw 3
Miniature ultrasonic is popped one's head in.3*3 arrays are constituted using 9 probes in one embodiment, as shown in Figure 3.
Fig. 3 is the top view structure chart of the integrative ultrasonic probe in the utility model.
Label in figure：1 is arm processor, and 2 be FPGA, and 3 be multichannel analog to digital conversion circuit, and 4 be that multichannel high_voltage isolation is received
Circuit, 5 be pressure sensor detection circuit, and 6 be multichannel high-voltage pulse radiating circuit, 7 integrated ultrasonic probes, and 8 be ultrasound
Couplant, 9 be bone sample.7.1 be probing shell protective layer, and 7.2 be pressure sensor, and 7.3 be pressure sensor electrode, 7.4
It is miniature ultrasonic probe electrode for miniature ultrasonic linear transducer array, 7.5,7.6 be coupling liquid, and 7.7 be probing shell inwall.
Embodiment
As shown in figure 1, the ultrasonic sclerotin diagnostic system of the back scattering based on linear transducer array of the present utility model includes：At ARM
Manage device 1, FPGA2, multichannel analog to digital conversion circuit 3, multichannel high_voltage isolation receiving circuit 4, pressure sensor detection circuit 5, multichannel
High-voltage pulse radiating circuit 6, integrative ultrasonic probe 7, ultrasonic coupling agent 8.
As shown in Figures 2 and 3, the integrative ultrasonic probe in the utility model includes：Probing shell protective layer 7.1, pressure
Force snesor 7.2, pressure sensor electrode 7.3, miniature ultrasonic linear transducer array 7.4, miniature ultrasonic probe electrode 7.5, coupling liquid
Body 7.6, probing shell inwall 7.7.In figure, integrative ultrasonic probe can be divided into inner ring and outer ring two parts.In the spy of inner ring
The lower section of head protection layer 7.1, is border with probing shell inwall 7.7, is a circular cylindrical cavity.Coupling liquid is full of in the cavity
7.6.In the present embodiment, the coupling liquid 7.6 used is with the electrical isolation capabilities and in a low voice water-soluble high score of attenuation coefficient
Sub- gel.Miniature ultrasonic linear transducer array 7.4 is placed in cavity, is close to the upper wall of probing shell protective layer 7.1.Popped one's head in array
Symmetrical figure is arranged in, in the present embodiment, is popped one's head in using 9 miniature ultrasonics, is arranged in 3*3 array, as shown in Figure 3.
Miniature ultrasonic probe electrode 7.5 is drawn by bottom of popping one's head in.In the present embodiment, pressure sensor 7.2 uses metal strain plate
Type pressure sensor, is buried in the outer ring of probing shell protective layer 7.1, to avoid the letter for stopping miniature ultrasonic probe 7.4
Number send with receive.Pressure sensor electrode 7.3 is hidden in chamber outer wall, and by popping one's head in, bottom is drawn.
When integrative ultrasonic probe 7 is pressed in 9 surface of bone sample to be measured, the metal strain sector-meeting in pressure sensor 7.2
Deformation is produced, so as to cause the change of metal strain plate impedance.Pressure sensor detection circuit 5 is surveyed by way of stream is sought in pressurization
The impedance between pressure sensor electrode 7.3 is measured, so that pressure value is detected, and analog-to-digital conversion is data signal.FPGA2 is read should
Pressure value, and by bus transfer to arm processor 1.Arm processor 1 shows the pressure value over the display, and points out to use
Family is adjusted in the pressure to correct scope.
When the pressure value is in correct scope, FPGA2 control multichannel high-voltage pulses radiating circuit 6 controls miniature ultrasonic to visit
First probe in head array 7.4 sends ultrasonic pulse pumping signal.The ultrasonic wave is popped one's head in and coupling liquid by miniature ultrasonic
Interface between body 7.6, then by the interface between coupling liquid 7.6 and probe protective layer 7.1, then penetrate ultrasonic coupling agent
8 reach bone sample 9 to be measured.Back scattering occurs in bone sample 9 for ultrasonic wave, and the back scattering echo-signal of generation penetrates ultrasonic coupling
Agent 8, then the interface by popping one's head between protective layer 7.1 and coupling liquid 7.6, then pass through coupling liquid 7.6 and miniature ultrasonic
Interface between probe 7.4, electric signal is received and converted to by miniature ultrasonic probe 7.4.FPGA2 control multichannel high_voltage isolations connect
Receive circuit 4 and receive the signal of respective channel, and be filtered, amplify, then control the respective channel in multichannel analog to digital conversion circuit 3
Analog-to-digital conversion is carried out, the backscatter signal of this passage is gathered.Then, FPGA2 repeats said process, controls other passages small successively
The signal of type ultrasonic probe is sent with receiving.
After all ultrasonic backscattered signals of 9 passages are collected, FPGA2 sends these signals by high-speed bus
To arm processor 1.The backscatter signal of each passage of 1 pair of arm processor calculates apparent integration backscattering coefficient respectively（AIB）、
Back scattering spectral centroid is offset（SCS）, backscattering coefficient（BSC）Deng backscatter parameters, the then parameter calculating to 9 passages is tied
Fruit is averaged.Backscatter parameters after foundation is average, diagnosis are made to sclerotin situation, and be shown on LCD display 10.
In the present embodiment, arm processor 1 is communicated with FPGA2 by high speed bus interface.Arm processor 1 passes through
The bus sends control command to FPGA2, and the backscatter signal collected is read from FPGA2.The bus can be using at ARM
The external parallel bus or universal serial bus of device are managed, SPI universal serial bus is employed in the present embodiment.Arm processor 1 will be collected
Waveform, pressure sensor detected value and calculate the presentation of information such as diagnostic result on LCD display 10.
In the present embodiment, the miniature ultrasonic center probe frequency used is 3.5MHz, the ultrasonic pulsative signal frequency of transmitting
Rate is produced by FPGA2 internal logics, is likewise configured to 3.5MHz.Ultrasonic coupling agent 8 is super using what is generally used in ultrasound medicine
Acoustic couplant.
Claims (3)
1. a kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe, it is characterised in that including：Arm processor,
FPGA, LCD display, multichannel analog to digital conversion circuit, multichannel high_voltage isolation receiving circuit, multichannel high-voltage pulse radiating circuit, pressure
Force snesor detection circuit, integrative ultrasonic probe；Wherein：
The integrative ultrasonic probe is by probing shell protective layer, miniature ultrasonic linear transducer array, pressure sensor and coupling liquid
Constitute；Miniature ultrasonic linear transducer array is enclosed in the probing shell protective layer full of coupling liquid, and each miniature ultrasonic probe can
Independently to send, receive ultrasonic signal；Pressure sensor is buried below the probing shell protective layer of outer ring, for detecting one
Pressure between body ultrasonic probe and bone sample to be measured；
The pressure sensor detection circuit is used to measure the impedance between pressure sensor electrode, so that pressure value is detected, and
Data signal is converted into by analog to digital conversion circuit；FPGA reads the pressure value, and gives ARM processing by bus transfer
Device；Arm processor shows the pressure value over the display, and points out user to adjust in the pressure to correct scope；
Runs software program on the arm processor, is controlled to FPGA by high speed bus interface and obtains data；FPGA
Control pressure sensor detection circuit obtains the pressure value of integrative ultrasonic detecting head surface first, and arm processor is by the pressure
Numerical value is shown on the interface of LCD display, with the pressure pointed out user to increase or reduce laminating of popping one's head in；When pressure value is correct
In the range of when, FPGA control multichannel high-voltage pulse radiating circuits drive each miniature ultrasonic probe to send ultrasonic pulse successively
Signal, and control the high_voltage isolation receiving circuit and high-speed A/D conversion circuit collection backscatter signal of respective channels；FPGA will
Each road ultrasonic backscattered signal received is uploaded to arm processor by high-speed bus.
2. the ultrasonic sclerotin diagnostic system of the back scattering based on array probe according to claim 1, it is characterised in that system
The course of work is as follows：When the pressure value that pressure sensor detection circuit is detected is in correct scope, FPGA control multichannels are high
Impulse ejection circuit is pressed to control first miniature ultrasonic transducer to send ultrasonic pulse pumping signal；The ultrasonic wave passes through small-sized super
Interface between sonic transducer and coupling liquid, then by the interface between coupling liquid and probe protective layer, then penetrate super
Acoustic couplant reaches bone sample to be measured；Back scattering occurs in bone sample for ultrasonic wave, and the back scattering echo-signal of generation penetrates super
Acoustic couplant, then by the interface between protective layer and coupling liquid of popping one's head in, then pass through coupling liquid and miniature ultrasonic transducing
Interface between device, electric signal is received and converted to by miniature ultrasonic transducer；FPGA controls multichannel high_voltage isolation receiving circuit
The signal of respective channel is received, and is filtered, amplifies, then controls the respective channel in multichannel analog to digital conversion circuit to carry out modulus
Conversion, gathers the backscatter signal of this passage；FPGA repeats said process, the letter for controlling other passage miniature ultrasonics to pop one's head in successively
Number send with receive.
3. the ultrasonic sclerotin diagnostic system of the back scattering based on array probe according to claim 2, it is characterised in that adopting
After the ultrasonic backscattered signal for collecting whole passages, these signals are sent to arm processor by FPGA by high-speed bus；ARM
The backscatter signal that processor is received to each miniature ultrasonic probe, calculates apparent integration backscattering coefficient, back scattering respectively
Spectral centroid skew, backscattering coefficient, and the result of calculation of these miniature ultrasonics probe passage is averaged, after average
Backscatter parameters, make diagnosis to sclerotin situation, and show on an lcd display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040322.XU CN206526064U (en) | 2016-09-07 | 2016-09-07 | A kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040322.XU CN206526064U (en) | 2016-09-07 | 2016-09-07 | A kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe |
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| Publication Number | Publication Date |
|---|---|
| CN206526064U true CN206526064U (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040322.XU Withdrawn - After Issue CN206526064U (en) | 2016-09-07 | 2016-09-07 | A kind of ultrasonic sclerotin diagnostic system of the back scattering based on array probe |
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| CN (1) | CN206526064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175838A (en) * | 2016-09-07 | 2016-12-07 | 复旦大学 | A kind of ultrasonic sclerotin diagnostic system of back scattering based on array probe |
-
2016
- 2016-09-07 CN CN201621040322.XU patent/CN206526064U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175838A (en) * | 2016-09-07 | 2016-12-07 | 复旦大学 | A kind of ultrasonic sclerotin diagnostic system of back scattering based on array probe |
| CN106175838B (en) * | 2016-09-07 | 2023-09-08 | 复旦大学 | Backscattering ultrasonic bone diagnosis system based on array probe |
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Granted publication date: 20170929 Effective date of abandoning: 20230908 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20230908 |
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| AV01 | Patent right actively abandoned |