CN113616242A - Ultrasonic transcranial Doppler acquisition device and system - Google Patents
Ultrasonic transcranial Doppler acquisition device and system Download PDFInfo
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Abstract
The invention discloses an ultrasonic transcranial Doppler acquisition device and system, which belong to the technical field of ultrasonic transcranial Doppler, and comprise a device main body, a storage cabinet and an integrated machine. This supersound is through cranium Doppler collection system and system through utilizing wireless communication technique and wireless charging technique, has solved the use problem of data line among the prior art, and it is more convenient not only to use when making the handheld supersound of doctor pass through cranium Doppler transducer, has still prevented that the patient from being stumbled the secondary injury problem of data line and taking place.
Description
Technical Field
The invention belongs to the technical field of ultrasonic transcranial Doppler, and particularly relates to an ultrasonic transcranial Doppler acquisition device and system.
Background
The ultrasonic transcranial Doppler system is an important electronic medical instrument system for detecting cerebral blood flow and analyzing cerebral diseases at present, and mainly comprises an ultrasonic Doppler transducer (probe), an ultrasonic conversion analog circuit, a digital signal acquisition system, a data analysis system and a software system. In the process of propagation, when the ultrasonic wave encounters a moving object, the frequency of the reflected wave of the ultrasonic wave changes, and the magnitude of the frequency change is in direct proportion to the moving speed of the object. The principle can be used for measuring the blood flow velocity and the dynamic characteristic of the cerebral vessels of the human, which is the theoretical basis of an ultrasonic transcranial Doppler system.
In the prior art, in an intracranial vascular ultrasonic imaging device, data acquisition is performed by holding an ultrasonic Doppler transducer by a doctor to obtain two-dimensional frequency spectrum and image information, and the handheld ultrasonic Doppler transducer is connected with equipment by a data line, so that the handheld ultrasonic Doppler transducer is generally suspended in an external environment and is easily damaged after long-term use. In actual operation, the data line is easy to trip the patient and the doctor, and the ultrasonic Doppler transducer suddenly hits foreign objects to damage the equipment due to the sudden pulling of the data line. Therefore, the ultrasonic Doppler transducer is used and placed by adopting a wireless communication technology and a wireless charging technology, and the stability of electric signal transmission is ensured while the wireless technology is used.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an ultrasonic transcranial Doppler acquisition device and system to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an ultrasonic transcranial Doppler acquisition device comprises a device main body, a storage cabinet and an integrated machine, wherein an operation table and an operation panel are arranged on the upper surface of the device main body, the integrated machine is arranged inside the operation panel, a display screen of the integrated machine is located on the surface of the operation panel, a keyboard and a mouse are arranged on the surface of the operation table, four pulleys with locks are arranged at the bottom end of the device main body, a supporting seat located at the bottom end of the device main body is arranged on one side of each pulley with the locks, a heat dissipation window is arranged on the surface of one side of the storage cabinet, and an ultrasonic transcranial Doppler acquisition system based on an ultrasonic transcranial Doppler technology and a wireless charger used for wirelessly charging hardware equipment in the ultrasonic transcranial Doppler acquisition system are installed inside the storage cabinet.
Further optimize this technical scheme, switch button, manual/automatic button, start button, stop button and the button that resets have set gradually in the bottom on operating panel surface from left to right, one corner on operating panel surface is provided with the pronunciation and reports to the police mouth.
An ultrasonic transcranial Doppler acquisition system is installed inside a storage cabinet of the ultrasonic transcranial Doppler acquisition device and comprises a modular TCD instrument, an ultrasonic Doppler transducer and a color printer;
the modular TCD instrument comprises a wireless communication module and a TCD processor, wherein the wireless communication module transmits signals transmitted by the ultrasonic Doppler transducer to a signal receiving module, the TCD processor issues instructions to instruct the signal receiving module to transmit the received signals to a signal processing unit, the signal processing unit processes the signals and then transmits processed data to a data processing unit, the data processing unit processes the data and then feeds the data back to the TCD processor, the data sending module uploads the data to an all-in-one machine, and the all-in-one machine displays a two-dimensional intracranial blood flow image;
the ultrasonic Doppler transducer comprises a probe chip, a battery module and a wireless charging module, wherein the wireless charging module charges the battery module through a wireless charger inside a storage cabinet, the battery module supplies power for the work of the probe chip, the probe chip is controlled by a probe acquisition unit, the probe acquisition unit acquires ultrasonic echo signals of blood flow in intracranial blood vessels of a patient and space parameter information with blood flow information under the cooperation of a coupling agent, and the information is fed back to the probe chip by a signal conversion module; the acoustic Doppler transducer is also provided with a signal transceiver module and a wireless communication module, the signal transceiver module is used for receiving a working instruction from the modular TCD and sending a collected signal of the probe chip, the wireless communication module is used for mutual communication between the probe chip and the modular TCD, and the wireless communication module selects an independent signal channel supporting 802.11 ac;
the color printer comprises a data receiving module, a drawing printing module and a drawing exporting module, wherein the data receiving module is used for receiving intracranial blood vessel image data generated by the all-in-one machine, the drawing printing module prints and draws the image data, and the drawing exporting module exports the report.
Further optimizing the technical scheme, a probe acquisition unit in the ultrasonic doppler transducer comprises an ultrasonic scanning module and a space tracking module, wherein the ultrasonic scanning module acquires ultrasonic echo signals of blood flow in intracranial blood vessels under the assistance of a proper amount of coupling agent, and the space tracking module is used for acquiring space parameter information with blood flow information in the acquisition process of the ultrasonic scanning module.
Further optimizing the technical scheme, the signal processing unit in the modular TCD instrument comprises a signal shunt amplifying module, a signal detecting module, a signal superposing module and a signal demodulating and decoding module;
the signal shunt amplification module is used for transmitting the electric signal which receives the ultrasonic echo to a plurality of channels in a shunt way and carrying out the same amplification processing on the signal of each channel;
the signal detection module is used for carrying out A/D sampling on the electric signals of the ultrasonic echo signals on each channel and carrying out signal amplitude limiting, modulation signals reflected on frequency conversion are detected from the frequency-modulated waves after amplitude limiting, absolute values of the modulation signals are obtained, the amplitude change of the modulation signals is detected, and the signal-to-noise ratio of the detection signals is improved;
the signal superposition module is used for superposing the gamma signals with alpha amplitudes into a signal with alpha gamma amplitudes;
and the signal demodulation and decoding module is used for performing digital quadrature demodulation on the signal with the amplitude of alpha x gamma, and performing low-pass filtering and decoding.
Further optimizing the technical scheme, when the signal demodulation decoding module performs low-pass filtering, the low-pass filtering is performed according to the following formula:
wherein,
in the form of a time vector, the time vector,
LPF [. for each transmission of the acquired echo signal vector]And the low-pass filtering process is shown, and I and Q respectively represent two paths of demodulated orthogonal signals.
Further optimizing the technical scheme, when the signal demodulation decoding module performs decoding, the signal demodulation decoding module performs decoding according to the following formula:
wherein, ci(M) represents a code for each segment, having a total of N segments, the length of the code being M, sdem(i)(m) represents a signal that has undergone digital quadrature demodulation.
Further optimizing the technical scheme, the data processing unit in the modular TCD instrument comprises a data import module, a spectrum analysis module and a model matching module;
the data import module imports the demodulated and decoded data for correlation analysis of intracranial blood vessels;
the spectrum analysis module performs spectrum analysis on the demodulated and decoded data and draws a two-dimensional intracranial blood flow image, so that subsequent model calculation is facilitated;
and the model matching module is used for matching the data of the spectrum analysis with a data model to obtain an intracranial blood vessel evaluation value.
Further optimizing the technical scheme, the data model matched with the spectrum analysis data is as follows:
wherein F is an intracranial blood vessel evaluation value of the patient, X is intracranial blood flow velocity data of the patient, Y is power attenuation data of the induced stimulation ultrasonic echo signal of the patient, Z is reflux delay data of the induced stimulation ultrasonic echo signal of the patient, and a, b, c and e are model parameters.
According to the technical scheme, when the intracranial blood flow two-dimensional image is displayed on a display screen of the all-in-one machine, the operation panel is further provided with a chart viewing knob, the chart viewing knob can rotate clockwise or anticlockwise, and the chart viewing knob is used for conveniently inquiring each segment on the long page of the intracranial blood flow two-dimensional image.
Compared with the prior art, the invention provides an ultrasonic transcranial Doppler acquisition device and system, which have the following beneficial effects:
1. this supersound is through cranium Doppler collection system and system through utilizing wireless communication technique and wireless charging technique, has solved the use problem of data line among the prior art, and it is more convenient not only to use when making the handheld supersound of doctor pass through cranium Doppler transducer, has still prevented that the patient from being stumbled the secondary injury problem of data line and taking place.
2. This supersound is through cranium Doppler collection system and system, accomodate the cabinet through setting up, place supersound is through cranium Doppler collection system's hardware equipment, under the condition that the device does not use, preserve supersound is through cranium Doppler transducer, prevent to expose and receive the damage in external environment.
3. According to the ultrasonic transcranial Doppler acquisition device and system, the independent signal channel supporting 802.11ac is selected for the wireless communication module, so that the transmission intensity of an electric signal is improved; the method and the system have the advantages that the received electric signals are subjected to signal amplification, signal amplitude limiting and other processing modes, the problem that the signals are unstable possibly existing in the wireless technology is solved, the signal to noise ratio of the electric signals is improved, and the ultrasonic transcranial Doppler acquisition device and the system have the same signal acquisition level with an ultrasonic transcranial Doppler transducer with a data line connection in the prior art.
Drawings
FIG. 1 is a schematic structural diagram of an ultrasound transcranial Doppler acquisition device according to the present invention;
FIG. 2 is a schematic view of the structure of the operation panel of the ultrasonic transcranial Doppler acquisition device according to the present invention;
FIG. 3 is a schematic view of a connection structure of a roller skate with a lock in an ultrasonic transcranial Doppler acquisition device according to the present invention;
FIG. 4 is a schematic structural diagram of an ultrasound transcranial Doppler acquisition system according to the present invention;
FIG. 5 is a schematic structural diagram of an ultrasonic Doppler transducer in an ultrasonic transcranial Doppler acquisition system according to the present invention;
FIG. 6 is a schematic structural diagram of a modular TCD apparatus in an ultrasound transcranial Doppler acquisition system according to the present invention;
FIG. 7 is a schematic structural diagram of a color printer in an ultrasound transcranial Doppler acquisition system according to the present invention;
FIG. 8 is a schematic structural diagram of a signal processing unit in an ultrasound transcranial Doppler acquisition system according to the present invention;
fig. 9 is a schematic structural diagram of a data processing unit in an ultrasound transcranial doppler acquisition system according to the present invention.
In the figure: 1. a device main body; 2. a storage cabinet; 3. an operation table; 4. an operation panel; 41. a power switch key; 42. manual/automatic keying; 43. starting a key; 44. stopping the key; 45. resetting the key; 46. a chart viewing knob; 47. a voice broadcasting port; 5. an all-in-one machine; 6. a keyboard; 7. a mouse; 8. the wheel with the lock slides; 9. a supporting seat; 10. and a heat dissipation window.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, an ultrasound transcranial doppler acquisition device comprises a device body 1, a storage cabinet 2 and an integrated machine 5, the upper surface of the device main body 1 is provided with an operation table 3 and an operation panel 4, the integrated machine 5 is arranged inside the operation panel 4, the display screen of the all-in-one machine 5 is positioned on the surface of the operation panel 4, the surface of the operation table 3 is provided with a keyboard 6 and a mouse 7, the bottom end of the device main body 1 is provided with four pulleys 8 with locks, one side of each pulley 8 with locks is provided with a supporting seat 9 positioned at the bottom end of the device main body 1, a heat dissipation window 10 is formed in the surface of one side of the storage cabinet 2, and an ultrasonic transcranial Doppler acquisition system based on an ultrasonic transcranial Doppler technology and a wireless charger for wirelessly charging hardware equipment in the ultrasonic transcranial Doppler acquisition system are installed in the storage cabinet 2.
Through utilizing wireless communication technique and wireless charging technique, the use problem of data line among the prior art has been solved for it is more convenient to use when not only making the handheld supersound transcranial Doppler transducer of doctor, has still prevented that the patient from being stumbled the secondary injury problem of data line and taking place.
Accomodate the cabinet through setting up, place supersound transcranial Doppler collection system's hardware equipment, under the condition that the device does not use, preserve supersound transcranial Doppler transducer, prevent to expose and receive the damage in external environment.
Specifically, the bottom end of the surface of the operation panel 4 is sequentially provided with a power switch key 41, a manual/automatic key 42, a start key 43, a stop key 44 and a reset key 45 from left to right, and one corner of the surface of the operation panel 4 is provided with a voice broadcast port 47.
The keys are all used for controlling the ultrasonic transcranial Doppler acquisition system, and the ultrasonic transcranial Doppler acquisition system is convenient to use.
Referring to fig. 4, an ultrasound transcranial doppler acquisition system is installed inside the storage cabinet 2 of the ultrasound transcranial doppler acquisition device, and includes a modular TCD instrument, an ultrasound doppler transducer and a color printer;
please refer to fig. 6, wherein the modular TCD apparatus includes a wireless communication module and a TCD processor, the wireless communication module transmits signals transmitted by the ultrasonic doppler transducer to a signal receiving module, the TCD processor issues an instruction to instruct the signal receiving module to transmit the received signals to a signal processing unit, the signal processing unit processes the signals and then transmits the processed data to a data processing unit, the data processing unit processes the data and then feeds the data back to the TCD processor, the data transmitting module uploads the data to the all-in-one machine (5), and the all-in-one machine (5) displays a two-dimensional image of intracranial blood flow;
please refer to fig. 5, wherein the ultrasonic doppler transducer includes a probe chip, a battery module and a wireless charging module, the wireless charging module charges the battery module through a wireless charger inside the storage cabinet (2), the battery module supplies power for the operation of the probe chip, the probe chip controls a probe acquisition unit, the probe acquisition unit acquires an ultrasonic echo signal of blood flow in intracranial blood vessels of a patient and spatial parameter information with blood flow information under the cooperation of a coupling agent, and the signal conversion module feeds back the information to the probe chip; the acoustic Doppler transducer is also provided with a signal transceiver module and a wireless communication module, the signal transceiver module is used for receiving a working instruction from the modular TCD and sending a collected signal of the probe chip, the wireless communication module is used for mutual communication between the probe chip and the modular TCD, and the wireless communication module selects an independent signal channel supporting 802.11 ac;
referring to fig. 7, the color printer includes a data receiving module, a drawing printing module, and a drawing exporting module, where the data receiving module is configured to receive intracranial blood vessel image data generated by the all-in-one machine, the drawing printing module prints and draws the image data, and the drawing exporting module exports a report.
Specifically, the probe acquisition unit in the ultrasonic doppler transducer comprises an ultrasonic scanning module and a spatial tracking module, wherein the ultrasonic scanning module acquires ultrasonic echo signals of blood flow in intracranial blood vessels under the assistance of a proper amount of coupling agent, and the spatial tracking module is used for acquiring spatial parameter information with blood flow information in the acquisition process of the ultrasonic scanning module.
Referring to fig. 8, in particular, the signal processing unit in the modular TCD instrument includes a signal splitting and amplifying module, a signal detecting module, a signal superimposing module, and a signal demodulating and decoding module;
the signal shunt amplification module is used for transmitting the electric signal which receives the ultrasonic echo to a plurality of channels in a shunt way and carrying out the same amplification processing on the signal of each channel;
the signal detection module is used for carrying out A/D sampling on the electric signals of the ultrasonic echo signals on each channel and carrying out signal amplitude limiting, modulation signals reflected on frequency conversion are detected from the frequency-modulated waves after amplitude limiting, absolute values of the modulation signals are obtained, the amplitude change of the modulation signals is detected, and the signal-to-noise ratio of the detection signals is improved;
the signal superposition module is used for superposing the gamma signals with alpha amplitudes into a signal with alpha gamma amplitudes;
and the signal demodulation and decoding module is used for performing digital quadrature demodulation on the signal with the amplitude of alpha x gamma, and performing low-pass filtering and decoding.
Specifically, when the signal demodulation decoding module performs low-pass filtering, the low-pass filtering is performed according to the following formula:
wherein,
in the form of a time vector, the time vector,
LPF [. for each transmission of the acquired echo signal vector]And the low-pass filtering process is shown, and I and Q respectively represent two paths of demodulated orthogonal signals.
Specifically, when the signal demodulation decoding module performs decoding, the decoding is performed according to the following formula:
wherein, ci(M) represents a code for each segment, having a total of N segments, the length of the code being M, sdem(i)(m) represents a signal that has undergone digital quadrature demodulation.
Referring to fig. 9, in detail, the data processing unit in the modular TCD instrument includes a data importing module, a spectrum analyzing module, and a model matching module;
the data import module imports the demodulated and decoded data for correlation analysis of intracranial blood vessels;
the spectrum analysis module performs spectrum analysis on the demodulated and decoded data and draws a two-dimensional intracranial blood flow image, so that subsequent model calculation is facilitated;
and the model matching module is used for matching the data of the spectrum analysis with a data model to obtain an intracranial blood vessel evaluation value.
The independent signal channel supporting 802.11ac is selected for the wireless communication module, so that the transmission intensity of the electric signal is improved; the method and the system have the advantages that the received electric signals are subjected to signal amplification, signal amplitude limiting and other processing modes, the problem that the signals are unstable possibly existing in the wireless technology is solved, the signal to noise ratio of the electric signals is improved, and the ultrasonic transcranial Doppler acquisition device and the system have the same signal acquisition level with an ultrasonic transcranial Doppler transducer with a data line connection in the prior art.
Specifically, the data model for matching the spectral analysis data is as follows:
wherein F is an intracranial blood vessel evaluation value of the patient, X is intracranial blood flow velocity data of the patient, Y is power attenuation data of the induced stimulation ultrasonic echo signal of the patient, Z is reflux delay data of the induced stimulation ultrasonic echo signal of the patient, and a, b, c and e are model parameters.
Specifically, when the intracranial blood flow two-dimensional image is displayed on the display screen of the all-in-one machine 5, the operation panel 4 is further provided with a chart viewing knob 46, the chart viewing knob 46 can rotate clockwise or counterclockwise, and the chart viewing knob 46 is used for conveniently inquiring each segment on the long page of the intracranial blood flow two-dimensional image.
Example two:
by adopting the ultrasonic transcranial Doppler acquisition device and system in the first embodiment, a three-dimensional intracranial blood flow image can be drawn. Acquiring spatial parameter information with blood flow information in the acquisition process of an ultrasonic scanning module through a spatial tracking module, acquiring relative position points and angle parameters of an ultrasonic Doppler transducer through the spatial tracking module, and calculating convergence spatial points in the detection process by combining the relative distance between the spatial tracking module and a patient and depth adjustment parameters of the ultrasonic Doppler transducer; by comparing the blood flow information with the convergence space points in the detection process, the convergence space points with the blood flow information are integrated into a curve and a curved surface, and three-dimensional imaging data of intracranial blood flow is formed. When the intracranial blood flow three-dimensional image is displayed on the display screen of the all-in-one machine 5, the chart viewing knob 46 cannot be used, and only the operation mode of the keyboard 6+ the mouse 7 can be used for inquiring each segment on the long page of the intracranial blood flow three-dimensional image in the display screen.
The invention has the beneficial effects that:
1. this supersound is through cranium Doppler collection system and system through utilizing wireless communication technique and wireless charging technique, has solved the use problem of data line among the prior art, and it is more convenient not only to use when making the handheld supersound of doctor pass through cranium Doppler transducer, has still prevented that the patient from being stumbled the secondary injury problem of data line and taking place.
2. This supersound is through cranium Doppler collection system and system, accomodate the cabinet through setting up, place supersound is through cranium Doppler collection system's hardware equipment, under the condition that the device does not use, preserve supersound is through cranium Doppler transducer, prevent to expose and receive the damage in external environment.
3. According to the ultrasonic transcranial Doppler acquisition device and system, the independent signal channel supporting 802.11ac is selected for the wireless communication module, so that the transmission intensity of an electric signal is improved; the method and the system have the advantages that the received electric signals are subjected to signal amplification, signal amplitude limiting and other processing modes, the problem that the signals are unstable possibly existing in the wireless technology is solved, the signal to noise ratio of the electric signals is improved, and the ultrasonic transcranial Doppler acquisition device and the system have the same signal acquisition level with an ultrasonic transcranial Doppler transducer with a data line connection in the prior art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The ultrasonic transcranial Doppler acquisition device comprises a device main body (1), a storage cabinet (2) and an integrated machine (5), and is characterized in that an operation table (3) and an operation panel (4) are arranged on the upper surface of the device main body (1), the integrated machine (5) is arranged inside the operation panel (4), a display screen of the integrated machine (5) is located on the surface of the operation panel (4), a keyboard (6) and a mouse (7) are arranged on the surface of the operation table (3), four pulleys (8) with locks are arranged at the bottom end of the device main body (1), a supporting seat (9) located at the bottom end of the device main body (1) is arranged on one side of each pulley (8) with the locks, a heat dissipation window (10) is arranged on the surface of one side of the storage cabinet (2), an ultrasonic transcranial Doppler acquisition system based on an ultrasonic Doppler acquisition technology is arranged inside the storage cabinet (2), and an ultrasonic transcranial Doppler acquisition system based on an ultrasonic Doppler acquisition system is used for ultrasonic transcranial Doppler The hardware equipment carries out wireless charger that charges.
2. The ultrasonic transcranial Doppler acquisition device according to claim 1, wherein a power switch key (41), a manual/automatic key (42), a start key (43), a stop key (44) and a reset key (45) are sequentially arranged at the bottom end of the surface of the operation panel (4) from left to right, and a voice broadcast port (47) is arranged at one corner of the surface of the operation panel (4).
3. An ultrasound transcranial doppler acquisition system characterized in that it is installed inside a housing cabinet (2) of an ultrasound transcranial doppler acquisition device according to claims 1-2, comprising a modular TCD meter, an ultrasound doppler transducer and a color printer;
the modular TCD instrument comprises a wireless communication module and a TCD processor, wherein the wireless communication module transmits signals transmitted by the ultrasonic Doppler transducer to a signal receiving module, the TCD processor issues instructions to instruct the signal receiving module to transmit the received signals to a signal processing unit, the signal processing unit processes the signals and then transmits the processed data to a data processing unit, the data processing unit processes the data and then feeds the data back to the TCD processor, the data sending module uploads the data to an integrated machine (5), and the integrated machine (5) displays a two-dimensional intracranial blood flow image;
the ultrasonic Doppler transducer comprises a probe chip, a battery module and a wireless charging module, wherein the wireless charging module charges the battery module through a wireless charger inside a storage cabinet (2), the battery module supplies power for the work of the probe chip, the probe chip controls a probe acquisition unit, the probe acquisition unit acquires ultrasonic echo signals of blood flow in intracranial blood vessels of a patient and space parameter information with blood flow information under the cooperation of a coupling agent, and the information is fed back to the probe chip by a signal conversion module; the acoustic Doppler transducer is also provided with a signal transceiver module and a wireless communication module, the signal transceiver module is used for receiving a working instruction from the modular TCD and sending a collected signal of the probe chip, the wireless communication module is used for mutual communication between the probe chip and the modular TCD, and the wireless communication module selects an independent signal channel supporting 802.11 ac;
the color printer comprises a data receiving module, a drawing printing module and a drawing exporting module, wherein the data receiving module is used for receiving intracranial blood vessel image data generated by the all-in-one machine, the drawing printing module prints and draws the image data, and the drawing exporting module exports the report.
4. An ultrasound transcranial Doppler acquisition system according to claim 3, characterized in that a probe acquisition unit in the ultrasound Doppler transducer comprises an ultrasound scanning module and a spatial tracking module, wherein the ultrasound scanning module acquires ultrasound echo signals of blood flow in intracranial blood vessels with the assistance of a proper amount of coupling agent, and the spatial tracking module is used for acquiring spatial parameter information with blood flow information during the acquisition process of the ultrasound scanning module.
5. The ultrasound transcranial Doppler acquisition system according to claim 3, wherein the signal processing unit in the modular TCD instrument comprises a signal splitting and amplifying module, a signal detecting module, a signal superposition module and a signal demodulation and decoding module;
the signal shunt amplification module is used for transmitting the electric signal which receives the ultrasonic echo to a plurality of channels in a shunt way and carrying out the same amplification processing on the signal of each channel;
the signal detection module is used for carrying out A/D sampling on the electric signals of the ultrasonic echo signals on each channel and carrying out signal amplitude limiting, modulation signals reflected on frequency conversion are detected from the frequency-modulated waves after amplitude limiting, absolute values of the modulation signals are obtained, the amplitude change of the modulation signals is detected, and the signal-to-noise ratio of the detection signals is improved;
the signal superposition module is used for superposing the gamma signals with alpha amplitudes into a signal with alpha gamma amplitudes;
and the signal demodulation and decoding module is used for performing digital quadrature demodulation on the signal with the amplitude of alpha x gamma, and performing low-pass filtering and decoding.
6. The ultrasound transcranial Doppler acquisition system according to claim 5, wherein the signal demodulation decoding module performs low-pass filtering according to the following formula:
wherein,
in the form of a time vector, the time vector,
LPF [. for each transmission of the acquired echo signal vector]Representing the process of low-pass filtering, I and Q representingAnd (4) demodulating the two paths of orthogonal signals.
7. The ultrasound transcranial Doppler acquisition system according to claim 5, wherein the signal demodulation decoding module performs decoding according to the following formula:
wherein, ci(M) represents a code for each segment, having a total of N segments, the length of the code being M, sdem(i)(m) represents a signal that has undergone digital quadrature demodulation.
8. The ultrasound transcranial Doppler acquisition system according to claim 3, wherein the data processing unit in the modular TCD instrument comprises a data importing module, a spectrum analyzing module, and a model matching module;
the data import module imports the demodulated and decoded data for correlation analysis of intracranial blood vessels;
the spectrum analysis module performs spectrum analysis on the demodulated and decoded data and draws a two-dimensional intracranial blood flow image, so that subsequent model calculation is facilitated;
and the model matching module is used for matching the data of the spectrum analysis with a data model to obtain an intracranial blood vessel evaluation value.
9. An ultrasound transcranial doppler acquisition system according to claim 8, wherein the spectral analysis data matching data model is as follows:
wherein F is an intracranial blood vessel evaluation value of the patient, X is intracranial blood flow velocity data of the patient, Y is power attenuation data of the induced stimulation ultrasonic echo signal of the patient, Z is reflux delay data of the induced stimulation ultrasonic echo signal of the patient, and a, b, c and e are model parameters.
10. An ultrasonic transcranial Doppler acquisition system according to claim 3, wherein when the intracranial blood flow two-dimensional image is displayed on a display screen of the all-in-one machine (5), a chart viewing knob (46) is further arranged on the operation panel (4), the chart viewing knob (46) can rotate clockwise or counterclockwise, and the chart viewing knob (46) is used for conveniently inquiring each segment on a long page of the intracranial blood flow two-dimensional image.
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