CN106344069B - A kind of ultrasonic probe and ultrasonic imaging assistant diagnosis system - Google Patents
A kind of ultrasonic probe and ultrasonic imaging assistant diagnosis system Download PDFInfo
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- CN106344069B CN106344069B CN201610895413.XA CN201610895413A CN106344069B CN 106344069 B CN106344069 B CN 106344069B CN 201610895413 A CN201610895413 A CN 201610895413A CN 106344069 B CN106344069 B CN 106344069B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4411—Device being modular
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
Abstract
The invention discloses a kind of ultrasonic probe and ultrasonic imaging assistant diagnosis systems, probe includes ontology and the logical handle equipped with cable with certain elasticity and that end is used to contact with tissue, ultrasonic transducer is disposed with along axial direction from the end that ontology is contacted with tissue in the ontology, the impedance matching adjuster being electrically connected with ultrasonic transducer, electroacoustic transducer, extend the body end for contacting with tissue in the end of ultrasonic transducer, the electroacoustic transducer, impedance matching adjuster passes through the cable in handle respectively and connect with external ultrasonic control system；The present invention not only has conventional ultrasonic tissue reconstruct imaging function, and low-frequency mechanical vibrations can be carried out by electroacoustic transducer, low-frequency mechanical vibrations are transmitted to tissue by ontology, to form shearing wave within the organization, shearing wave can be received by ultrasonic transducer and then be exported to ultrasonic control system to carry out tissue hardness analysis, so realized and identified to lesion nature.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of ultrasonic probes and ultrasonic imaging assistant diagnosis system.
Background technique
Ultrasonic imaging is to scan tissue using ultrasonic acoustic beam, by reception, the processing to reflection signal, to obtain internal device
The image of official.Ultrasonic imaging method is commonly used to judge the position of internal organs, size, form, determines the range and physical property of lesion,
The internal anatomy of some gland tissues is provided, identify fetus it is normal with it is abnormal, in ophthalmology, gynemetrics and cardiovascular system, digestion
System, urinary system using very extensive.
Traditional ultrasonic imaging method is only capable of institutional framework being reconstructed imaging, can not identify to lesion nature,
The tissue characteristics such as viscosity, elasticity can not be identified.In addition, conventional Ultrasound imaging can not carry out precise positioning to lesion, at
As depth is inadequate.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of ultrasonic probe with
And ultrasonic imaging assistant diagnosis system.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of ultrasonic probe, including has certain
The ontology and the logical handle equipped with cable that elastic and end is used for and tissue contacts, the ontology is interior to be connect from ontology and tissue
Play impedance matching adjuster, the electroacoustic for being disposed with ultrasonic transducer along axial direction, being electrically connected with ultrasonic transducer in the end of touching
The body end is extended with for contacting with tissue in energy converter, the end of ultrasonic transducer, the electroacoustic transducer, impedance
Matching adjuster passes through the cable in handle respectively and connect with external ultrasonic control system；
The electroacoustic transducer is used to receive the mechanical vibratory excitation signal of ultrasonic control system output to carry out low frequency machine
Tool vibration, the low-frequency mechanical vibrations are transmitted to tissue by the ontology；The ultrasonic transducer is used in ultrasound control system
Emit ultrasonic wave under the control of system, and receives in the ultrasound echo signal and tissue in tissue caused by low-frequency mechanical vibrations
Shearing wave signal, and received signal is exported to ultrasonic control system by impedance matching adjuster to carry out tissue hardness point
Analysis and reconstructed tissue imaging.
In ultrasonic probe of the present invention, the ontology is the solid wood structure of tubular, fixed one outside solid wood structure outside
Shell, the electroacoustic transducer be loudspeaker, and the opening of the cone basin of loudspeaker towards solid wood structure separate tissue one end, with
The connected dust cap of cone basin is high molecular weight plastic material, and dust cap passes through a connector and solid wood knot with certain degree of hardness
Structure or cage connection, the handle successively non-contactly wear after shell, solid wood structure with speaker housings or ultrasonic transduction
Device shell is fixedly connected, and the voice coil in loudspeaker is connect by the cable in handle with ultrasonic control system.
In ultrasonic probe of the present invention, the ultrasonic probe further includes one for adjusting magnetic induction in loudspeaker
The magnetic induction intensity adjuster of intensity and then auxiliary adjustment low-frequency mechanical vibrations amplitude, the magnetic induction intensity adjuster pass through hand
Cable in handle is connect with external ultrasonic control system.
In ultrasonic probe of the present invention, the magnetic induction intensity adjuster is one and is wound in the magnet of loudspeaker
T iron on coil, ultrasonic control system is by the size and Orientation of electric current in control coil to adjust magnetic induction in loudspeaker
Intensity.
In ultrasonic probe of the present invention, the probe further includes the magnet that loudspeaker is arranged in and impedance
With the elastic component for being used to reduce remained shock between adjuster.
The invention also discloses a kind of ultrasonic imaging assistant diagnosis systems, including the ultrasonic probe and ultrasound control system
System, the ultrasonic control system include:
Main control module；
Mechanical vibratory excitation signal driver module connects the main control module and electroacoustic transducer, is used for main control module
The mechanical vibratory excitation signal of output exports after amplifying to electroacoustic transducer；
Ultrasonic excitation signals generate and shake first control module, connect the main control module and impedance matching adjuster, use
Ultrasonic transducer is triggered after handling the ultrasonic excitation signals that main control module exports emits ultrasonic wave to tissue；
Signal processing module connects the main control module and impedance matching adjuster, for received to ultrasonic transducer
Signal is delivered to main control module and carries out tissue hardness analysis and reconstructed tissue imaging after being handled.
In ultrasonic imaging assistant diagnosis system of the present invention, the mechanical vibratory excitation signal driver module includes
It is sequentially connected: the D/A converter module that is connect with main control module, bandpass filter, the power amplification being connect with electroacoustic transducer
Module, D/A converter module for being transformed into friendship after the digital signal that main control module exports is converted to analog voltage signal again
Time-dependent current signal, bandpass filter export after being used to carry out received AC signal the filtering processing of 5Hz-1KHz to function
Rate amplification module, power amplifier module are used to after filtered AC signal is carried out power amplification export to electroacoustic transduction
Device.
In ultrasonic imaging assistant diagnosis system of the present invention, the electroacoustic transducer is loudspeaker, the auxiliary
Diagnostic system further includes D/A converter module, and the ultrasonic probe further includes one for adjusting loudspeaker intrinsic inductance
Magnetic induction intensity adjuster, the D/A converter module connection main control module and magnetic induction intensity adjuster, are used for master control mould
The digital signal of block output, which is converted to, to be transformed into AC signal after analog voltage signal again and exports to magnetic induction intensity tune
Device is saved, the magnetic induction intensity adjuster is for adjusting loudspeaker intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations width
Degree.
In ultrasonic imaging assistant diagnosis system of the present invention, the ultrasonic transducer is using multilayer vibration member scanning knot
Structure, the main control module make ultrasound beamformer focus on the certain point in tissue by controlling the time delay that every Lu Zhenyuan emits, and
Main control module carries out compressed encoding to ultrasonic excitation signals using Barker and Golay encoding mechanism.
In ultrasonic imaging assistant diagnosis system of the present invention, the signal processing module includes sequentially connected pre-
Processing circuit, magnifier, filter circuit, demodulator circuit, AD Acquisition Circuit, the pretreatment circuit are also connected with impedance
With adjuster, the AD Acquisition Circuit connects main control module.
Implement ultrasonic probe and ultrasonic imaging assistant diagnosis system of the invention, has the advantages that the present invention
Probe not only have conventional ultrasonic tissue reconstruct imaging function, but also electroacoustic transducer can be passed through and carry out Low-Frequency Mechanical vibration
Dynamic, low-frequency mechanical vibrations are transmitted to tissue by ontology, to form shearing wave within the organization, shearing wave can be by ultrasonic transduction
Device is received and then is exported to ultrasonic control system to carry out tissue hardness analysis, is so realized and is identified to lesion nature；
Further, in probe of the invention, by adding coil in the T iron of loudspeaker, by control coil
Size of current and direction, which are realized, adjusts loudspeaker intrinsic inductance, and then auxiliary adjustment low-frequency mechanical vibrations amplitude；In loudspeaking
Elastic component is set between the magnet and impedance matching adjuster of device to reduce influence of the remained shock to ultrasonic transducer, is improved to tissue
The measurement accuracy of hardness；
Further, ultrasonic transducer is using the first Scan Architecture of multilayer vibration in the present invention, the time delay that every Lu Zhenyuan emits
So that ultrasound beamformer is focused on the certain point in tissue, realizes the precise positioning to lesion；And main control module using Barker and
Golay encoding mechanism carries out compressed encoding to ultrasonic excitation signals, to make the ultrasonic wave of ultrasonic imaging assistant diagnosis system
Penetrability is stronger, realizes the ultrasonic imaging to deeper tissue.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of the preferred embodiment of ultrasonic probe of the present invention；
Fig. 2 is the structural schematic diagram of electroacoustic transducer in Fig. 1；
Fig. 3 is the vibration member distribution schematic diagram of ultrasonic transducer in the preferred embodiment of ultrasonic probe of the present invention；
Fig. 4 is the structural schematic diagram of ultrasonic imaging assistant diagnosis system of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Ultrasonic probe of the invention includes having ontology certain elastic and that end is used for and tissue contacts and leading to set
Have a handle of cable, in the ontology from the end that ontology is contacted with tissue along axial direction be disposed with ultrasonic transducer and
Impedance matching adjuster, the electroacoustic transducer of ultrasonic transducer electrical connection, the body end is extended in the end of ultrasonic transducer
Portion is with for contacting with tissue, the electroacoustic transducer, impedance matching adjuster pass through cable and outside in handle respectively
Ultrasonic control system connection；
The electroacoustic transducer is used to receive the mechanical vibratory excitation signal of ultrasonic control system output to carry out low frequency machine
Tool vibration, the low-frequency mechanical vibrations are transmitted to tissue by the ontology；The ultrasonic transducer is used in ultrasound control system
Emit ultrasonic wave under the control of system, and receives in the ultrasound echo signal and tissue in tissue caused by low-frequency mechanical vibrations
Shearing wave signal, and received signal is exported to ultrasonic control system by impedance matching adjuster to carry out tissue hardness point
Analysis and reconstructed tissue imaging.
Probe of the invention not only has conventional ultrasonic tissue reconstruct imaging function, but also can pass through electroacoustic transducer
Low-frequency mechanical vibrations are carried out, low-frequency mechanical vibrations are transmitted to tissue by ontology, so that shearing wave is formed within the organization, shearing wave
It can be received and then be exported to ultrasonic control system to carry out tissue hardness analysis by ultrasonic transducer, so be realized to neuropathic
Matter is identified.
It is the structural schematic diagram of the preferred embodiment of ultrasonic probe of the present invention with reference to Fig. 1.Fig. 2 is electroacoustic transducer in Fig. 1
Structural schematic diagram.
In preferred embodiment, the electroacoustic transducer is loudspeaker, loudspeaker, impedance matching adjuster, ultrasonic transducer
It forms a whole, such as is combined this three parts by an inner casing, handle is interspersed in again after passing through solid wood structure 1
On inner casing, cable enters in inner casing to be connect with loudspeaker, impedance matching adjuster.The ontology is preferably the solid wood structure of tubular
1, a fixed shell 2, shell 2 are mainly beautiful and dust-proof to solid wood structure 1 outside.In Fig. 1,4 indicate handle, and 3 indicate the communications cable.
In conjunction with Fig. 2, loudspeaker includes upper clamp plate 10, the frame 11 above upper clamp plate 10, is located at 10 lower section of upper clamp plate
Antimagnetic hood 12, fix a magnet 13 in Antimagnetic hood 12, a T iron magnetic for enhancing magnet 13 be provided in magnet 13
14, cone basin 15, voice coil 16, dust cap 17 are provided in frame 11.When speaker operation, the vibration of voice coil 16 drives connected to it
Community's movement of cone basin 15, dust cap 17, frame 11, magnet 13, T iron 14, Antimagnetic hood 12 are static part.
The structure that existing loudspeaker is made full use of in preferred embodiment, by the opening of the cone basin 15 of loudspeaker towards solid wood
One end of the separate tissue of structure 1, the dust cap 17 being connected with cone basin 15 is high molecular weight plastic material, and dust cap 17 passes through one
There is root the mandril (not shown) of certain degree of hardness to connect with solid wood structure 1 or shell 2, and handle 4 successively non-contactly wears outer
It is fixedly connected after shell 2, solid wood structure 1 with speaker housings (such as frame 11 or Antimagnetic hood 12) or ultrasonic transducer shell,
Voice coil 16 in loudspeaker is connect by the cable 3 in handle 4 with ultrasonic control system.
In this way, driving the community of cone basin 15, dust cap 17, mandril, 1/ shell 2 of solid wood structure when voice coil 16 vibrates
Low-frequency mechanical vibrations are carried out, low-frequency mechanical vibrations are passed to tissue again by solid wood structure 1, and then form shearing wave in the tissue,
The hardness information that tissue can be obtained according to the speed of shearing wave, can obtain the pathological characteristics of tissue.
It is understood that the transmission of vibration is not limited to this, as long as the low-frequency mechanical vibrations of loudspeaker can be transmitted
It is within the scope of the present invention to the community of 1/ shell 2 of solid wood structure.For example, it is also possible to be the connection of other shapes
Part, however it is not limited to mandril.
Preferably, the ultrasonic probe further include one for adjust loudspeaker intrinsic inductance so that auxiliary adjustment it is low
The magnetic induction intensity adjuster of frequency mechanical oscillation amplitude, the magnetic induction intensity adjuster pass through cable and outside in handle
Ultrasonic control system connection.
For example, the magnetic induction intensity adjuster is a T being wound in the magnet 13 of loudspeaker in specific embodiment
Coil (not shown) on iron 14, ultrasonic control system is by the size and Orientation of electric current in control coil to adjust in loudspeaker
Magnetic induction intensity.
Preferably, the probe further includes the use being arranged between the magnet 13 of loudspeaker and impedance matching adjuster
In the elastic component for reducing remained shock.Elastic component improves the measurement to tissue hardness by reducing influence of the remained shock to ultrasonic transducer
Precision.In specific embodiment, elastic component can choose spring.
It is the vibration member distribution schematic diagram of ultrasonic transducer in the preferred embodiment of ultrasonic probe of the present invention with reference to Fig. 3.It is preferred that
, the ultrasonic transducer is shaken first Scan Architecture using multilayer, the main control module 400 by control every Lu Zhenyuan transmitting when
Prolonging makes ultrasound beamformer focus on the certain point in tissue.Every layer of vibration member forms planar circular structure.In preferred embodiment, first
1 vibration member of layer, 8 vibration members of the second layer, 16 vibration members of third layer, * 8 vibration members of n-th layer (N-1), and so on.It is shaken by every road
The time delay of member transmitting makes ultrasound beamformer focus on (the one of the signal of each Lu Zhenyuan of the point while arrival of the certain point in tissue
Point, signal are most strong), the precise positioning to lesion can be realized.
Correspondingly, the invention also discloses a kind of ultrasonic imaging assistant diagnosis systems.With reference to Fig. 4, be ultrasound of the invention at
As the structural schematic diagram of assistant diagnosis system.Ultrasonic imaging assistant diagnosis system of the invention, including the ultrasonic probe and
Ultrasonic control system.Wherein, the ultrasonic control system includes main control module 400, mechanical vibratory excitation signal driver module
100, ultrasonic excitation signals generate and shake first control module 200.Wherein:
Mechanical vibratory excitation signal driver module 100 connects the main control module 400 and electroacoustic transducer, for that will lead
The mechanical vibratory excitation signal that control module 400 exports exports after amplifying to electroacoustic transducer；
Ultrasonic excitation signals generate and shake first control module 200, connect the main control module 400 and impedance matching is adjusted
Device, triggering ultrasonic transducer transmitting ultrasonic wave arrives after the ultrasonic excitation signals for exporting to main control module 400 are handled
Tissue.In specific embodiment, ultrasonic excitation signals generate and shake first control module 200 and carry out power amplification using EL7222,
Then impedance matching is realized by transformer.
Signal processing module 300 connects the main control module 400 and impedance matching adjuster, for ultrasonic transducer
Received signal is delivered to main control module 400 and carries out tissue hardness analysis and reconstructed tissue imaging after being handled.
Main control module 400, including FPGA, embedded system, display module, key, data memory module, peripheral interface,
Power management module.Pulse signal is generated by FPGA to control loudspeaker vibration, to make ultrasonic probe shell and solid wood knot
Structure vibrates and generates shearing wave；It is encoded in addition, FPGA carries out Barker and Golay to every road ultrasonic excitation signals, excitation is super
Sonic transducer industry crosses ultrasonic coupling agent and issues multiplex ultrasonic to biological tissue, FPGA by control every Lu Zhenyuan transmitting when
Prolonging makes ultrasound beamformer focus on the certain point in tissue；The multi-path echo signal that FPGA also receives multichannel vibration member counts
Word synthesis extracts the spread speed of shearing wave in the tissue from echo-signal, and then obtains the hardness information of tissue, this
Outside, ultrasonic imaging is realized by repeatedly receiving demodulation ultrasonic echo information, and then reconstructs organization internal institutional framework, is led to simultaneously
It crosses embedded system data are stored and shown, such as different hardness can be shown with different colors.
FPGA of the invention selects ALTERA company of the U.S APEX20K series EPF20K300EQC240-1, gate array resource
It is more, there is 152 I/O interfaces, and compatible multiple voltage input, control is programmed to it using VHDL language.
Wherein, the mechanical vibratory excitation signal driver module 100 includes sequentially connected: being connect with main control module 400
D/A converter module, bandpass filter, the power amplifier module being connect with electroacoustic transducer, D/A converter module will be for will lead
The digital signal that control module 400 exports is transformed into AC signal, bandpass filter after being converted to analog voltage signal again
It exports after filtering processing for received AC signal to be carried out to 5Hz-1KHz to power amplifier module, power amplification mould
Block is used to after filtered AC signal is carried out power amplification export to electroacoustic transducer.
In one specific example, the DAC908E that D/A converter module is selected uses bandwidth to filter for the band logical of 5Hz-1KHz
Wave device filters, the STK084 that power amplifier module uses.It is controlled in such a way that FPGA inquires sine table and uses timing
DAC908E generates the low frequency signal of certain frequency as mechanical vibratory excitation signal, and detailed process is as follows: passing through FPGA pairs
DAC908E carries out digital-to-analogue conversion, generates the adjustable low frequency signal of frequency (being adjusted by FPGA, frequency < 1kHz), then lead to
It crosses a bandpass filter and bandpass filtering is carried out to the low frequency signal of generation, then by a power amplifier to the low of generation
Frequency signal amplifies, the voice coil 16 of amplified low frequency signal drive the speaker, so as to cause the cone basin 15 of loudspeaker, voice coil
16, dust cap 17 and the mandril to connect together, solid wood structure 1 and shell 2 make low-frequency vibration, specific vibration frequency by FPGA into
Row control.
Wherein, the signal processing module 300 can refer to the principle of existing ultrasonic image-forming system.For example, a tool
In body embodiment, signal processing module 300 includes sequentially connected pretreatment circuit, magnifier, filter circuit, demodulation
Circuit, AD Acquisition Circuit, the pretreatment circuit are also connected with impedance matching adjuster, and the AD Acquisition Circuit connects main control module
400.AD Acquisition Circuit of the present invention is realized as 8 ADC acquisition chips to ultrasound echo signal using ADC10321CIVT
Analog-to-digital conversion, the first corresponding channel of each vibration use an ADC chip, and the digital output end of 25 road ADC chip of Bing Jiang passes through total
Lane controller is attached with FPGA.
Preferably, the assistant diagnosis system further includes D/A converter module, and the D/A converter module connects master control mould
Block 400 and loudspeaker intrinsic inductance adjuster, the digital signal for exporting main control module 400 are converted to analog voltage
It is transformed into AC signal after signal again to export to magnetic induction intensity adjuster, magnetic induction intensity adjuster adjusts loudspeaking again
Device intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations amplitude.In one specific embodiment, magnetic induction intensity is adjusted
Device is using 8 DAC908E as D/A converter module.
Further, ultrasonic transducer is using the first Scan Architecture of multilayer vibration in the present invention, the time delay that every Lu Zhenyuan emits
So that ultrasound beamformer is focused on the certain point in tissue, realizes the precise positioning to lesion；And main control module 400 uses Barker
Compressed encoding is carried out to ultrasonic excitation signals with Golay encoding mechanism, to make the ultrasound of ultrasonic imaging assistant diagnosis system
Wave penetrability is stronger, realizes the ultrasonic imaging to deeper tissue.
In conclusion implementing ultrasonic probe and ultrasonic imaging assistant diagnosis system of the invention, have below beneficial to effect
Fruit: probe of the invention not only has conventional ultrasonic tissue reconstruct imaging function, but also can be carried out by electroacoustic transducer
Low-frequency mechanical vibrations, low-frequency mechanical vibrations are transmitted to tissue by ontology, to form shearing wave within the organization, shearing wave can be with
By ultrasonic transducer receive so that export to ultrasonic control system to carry out tissue hardness analysis, so realize to lesion nature into
Row identifies；Further, in probe of the invention, by adding coil in the T iron of loudspeaker, pass through the electricity in control coil
It flows size and Orientation and realizes adjusting loudspeaker intrinsic inductance, and then auxiliary adjustment low-frequency mechanical vibrations amplitude；In loudspeaker
Magnet and impedance matching adjuster between setting elastic component to reduce influence of the remained shock to ultrasonic transducer, improve hard to organizing
The measurement accuracy of degree；Further, ultrasonic transducer uses the first Scan Architecture of multilayer vibration in the present invention, every Lu Zhenyuan transmitting
Time delay makes ultrasound beamformer focus on the certain point in tissue, realizes the precise positioning to lesion；And main control module uses
Barker and Golay encoding mechanism carries out compressed encoding to ultrasonic excitation signals, to make ultrasonic imaging assistant diagnosis system
Ultrasonic wave penetrability it is stronger, realize ultrasonic imaging to deeper tissue.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (6)
1. a kind of ultrasonic probe, which is characterized in that including ontology that there is certain elasticity and that end is used to contact with tissue with
And the logical handle equipped with cable, the ontology is interior to be disposed with ultrasonic transduction along axial direction with organizing the end contacted from ontology
Device, impedance matching adjuster, the electroacoustic transducer being electrically connected with ultrasonic transducer, the end of ultrasonic transducer extends described
With for contacting with tissue, the electroacoustic transducer, impedance matching adjuster pass through cable in handle and outer respectively in body end portion
The ultrasonic control system in portion connects；
The electroacoustic transducer is used to receive the mechanical vibratory excitation signal of ultrasonic control system output to carry out Low-Frequency Mechanical vibration
Dynamic, the low-frequency mechanical vibrations are transmitted to tissue by the ontology；The ultrasonic transducer is used in ultrasonic control system
Control is lower to emit ultrasonic wave, and receives shearing caused by low-frequency mechanical vibrations in the ultrasound echo signal and tissue in tissue
Wave signal, and received signal exported to ultrasonic control system by impedance matching adjuster with carry out tissue hardness analysis and
Reconstructed tissue imaging；
Wherein, the ontology is the solid wood structure of tubular, and a fixed shell outside solid wood structure, the electroacoustic transducer is loudspeaking
Device, and the opening of the cone basin of loudspeaker towards solid wood structure separate tissue one end, and cone basin have by one it is certain hard
The connector of degree and solid wood structure or cage connection, the handle successively non-contactly wear after shell, solid wood structure with raise
Sound device shell or ultrasonic transducer shell are fixedly connected, the voice coil being connect with cone basin in loudspeaker by cable in handle with
Ultrasonic control system connection；
The ultrasonic probe further includes one for adjusting loudspeaker intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations
The magnetic induction intensity adjuster of amplitude, the magnetic induction intensity adjuster are by the ultrasound control of cable and outside in handle
System connection；
The magnetic induction intensity adjuster is a coil being wound in the intracorporal T iron of magnetic of loudspeaker, and ultrasonic control system is logical
The size and Orientation of electric current in control coil is crossed to adjust loudspeaker intrinsic inductance；
The probe further includes between the magnet that loudspeaker is arranged in and impedance matching adjuster for reducing remained shock
Elastic component.
2. a kind of ultrasonic imaging assistant diagnosis system, which is characterized in that including ultrasonic probe as described in claim 1 and ultrasound
Control system, the ultrasonic control system include:
Main control module；
Mechanical vibratory excitation signal driver module, the mechanical vibratory excitation signal for exporting main control module amplify rear defeated
Out to electroacoustic transducer；
Ultrasonic excitation signals generate and the first control module of vibration, at the ultrasonic excitation signals for exporting to main control module
Ultrasonic transducer is triggered after reason emits ultrasonic wave to tissue；
Signal processing module, for being delivered to main control module after handling ultrasonic transducer received signal, to carry out tissue hard
Degree analysis and reconstructed tissue imaging.
3. ultrasonic imaging assistant diagnosis system according to claim 2, which is characterized in that the mechanical vibratory excitation signal
Drive module includes D/A converter module, bandpass filter, power amplifier module, and D/A converter module is used for main control module is defeated
Digital signal out is transformed into AC signal after being converted to analog voltage signal again, and bandpass filter is used for will be received
Output is to power amplifier module after the filtering processing of AC signal progress 5Hz-1KHz, and power amplifier module will be for that will filter
AC signal afterwards exports after carrying out power amplification to electroacoustic transducer.
4. ultrasonic imaging assistant diagnosis system according to claim 2, which is characterized in that the electroacoustic transducer is loudspeaking
Device, the assistant diagnosis system further include D/A converter module, and the ultrasonic probe further includes one for adjusting in loudspeaker
The magnetic induction intensity adjuster of magnetic induction intensity, the digital signal that the D/A converter module is used to export main control module are converted
It exports to be transformed into AC signal after analog voltage signal again to magnetic induction intensity adjuster, the magnetic induction intensity tune
Section device is for adjusting loudspeaker intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations amplitude.
5. ultrasonic imaging assistant diagnosis system according to claim 2, which is characterized in that the ultrasonic transducer is using more
The first Scan Architecture of layer vibration, the main control module focus on ultrasound beamformer in tissue by controlling the time delay that every Lu Zhenyuan emits
Certain point, and main control module using Barker and Golay encoding mechanism to ultrasonic excitation signals carry out compressed encoding.
6. ultrasonic imaging assistant diagnosis system according to claim 2, which is characterized in that the signal processing module includes
Pre-process circuit, magnifier, filter circuit, demodulator circuit, AD Acquisition Circuit.
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| CN109632970A (en) * | 2018-11-16 | 2019-04-16 | 中聚科技股份有限公司 | It is a kind of for encode ultrasound single channel ultrasound pulse transmission and echo amplification system |
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| CN104644209B (en) * | 2013-11-21 | 2017-06-20 | 通用电气公司 | Ultrasound Instrument and the vibrating device being applied thereon |
| CN104814760A (en) * | 2015-03-27 | 2015-08-05 | 无锡海斯凯尔医学技术有限公司 | Supersonic detection device, system and method for elasticity measurement |
| CN105844645B (en) * | 2016-03-31 | 2019-11-12 | 深圳大学 | A kind of Transient elastography code detection method and system |
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