CN103454640A - Ultrasonic imaging device and imaging method - Google Patents
Ultrasonic imaging device and imaging method Download PDFInfo
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- CN103454640A CN103454640A CN2013104184832A CN201310418483A CN103454640A CN 103454640 A CN103454640 A CN 103454640A CN 2013104184832 A CN2013104184832 A CN 2013104184832A CN 201310418483 A CN201310418483 A CN 201310418483A CN 103454640 A CN103454640 A CN 103454640A
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Abstract
The invention discloses an ultrasonic imaging device and an imaging method. The ultrasonic imaging device only comprises a waveform generating device, an emitting device, an ultrasonic probe, a receiving device, a beam forming device, a data transmission device and a general computer. The ultrasonic imaging device and the imaging method have the advantages that the ultrasonic imaging device adopts a hardware circuit to achieve the amplification, wave filtration and digital-analog conversion of echoes of ultrasonic waves, then the echoes of the ultrasonic waves are processed into ultrasonic wave radio frequency data through the beam forming device, the ultrasonic wave radio frequency data are sent to the general computer through the data transmission device, the links with large number of operation (demodulation, detection, logarithmic compression, scan conversion and doppler signal processing) in the processing of the echoes of the ultrasonic waves are completed by utilizing the processing capacity of the CPU of the general computer, therefore, the hardware circuit for demodulation and detection processing does not need to be developed, development difficulty is reduced, hardware cost is saved, the mentioned functions are achieved through programs, and secondary development is convenient to carry out.
Description
Technical field
The present invention relates to a kind of ultrasonic imaging apparatus and formation method.
Background technology
In prior art, general ultrasonic imaging apparatus comprises the devices such as analog-digital converter, FPGA and DSP, to complete the signals such as digital beam is synthetic, solution is in harmonious proportion detection, processes.But the data that get from described analog-digital converter need to just can obtain useful data through a large amount of calculation process, and this will cause described FPGA and DSP must have higher performance, thereby can increase cost of products.And the function of this ultrasonic imaging apparatus is limited by hardware circuit, if increase a new function, will redesign circuit board, increased the secondary development difficulty of ultrasonic imaging apparatus.
Further, in described ultrasonic imaging apparatus, comprise the CPU platform, the CPU of now has developed into multicore architecture, has very powerful processing power.But described CPU has only born post processing of image, image and shown and the function such as user interface is provided, its powerful processing power is idle, causes waste.
Summary of the invention
The object of the invention is to provide a kind of ultrasonic imaging apparatus, this ultrasonic imaging apparatus utilizes the processing power of the CPU of multi-purpose computer, complete the macrooperation amount link of ultrasonic echo in processing----demodulation, detection, log-compressed, scan conversion and Doppler signal are processed, thereby do not need exploitation to separate the hardware circuit of the processing such as mediation detection, reduce development difficulty, saved hardware cost; Facilitate the secondary development of product.
Second purpose of the present invention is to provide a kind of method for ultrasonic imaging, this method for ultrasonic imaging is for described ultrasonic imaging apparatus, described ultrasonic imaging apparatus utilizes the processing power of the CPU of multi-purpose computer, demodulation, detection, log-compressed, scan conversion and Doppler signal in the settling signal processing are processed, thereby reduced development difficulty, and facilitated secondary development.
Technical solution problem of the present invention adopts following technical scheme: a kind of ultrasonic imaging apparatus, and described ultrasonic imaging apparatus comprises:
Waveform generating apparatus, for generation of the low pressure transmitted waveform;
Emitter, be connected with described Waveform generating apparatus, for the low pressure transmitted waveform that described Waveform generating apparatus is produced, is converted to the high pressure transmitted waveform;
Ultrasonic probe, be connected with described emitter; For launching ultrasound wave and receiving ultrasonic echo;
Receiving trap, be connected with described ultrasonic probe; Amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo; Beam synthesizer, be connected with described receiving trap, receives described digitalized ultrasonic ripple echo, and described digitalized ultrasonic ripple echo is carried out to wave beam and synthesize, and obtains the ultrasound wave rf data;
Data transmission device, with described beam synthesizer, with described Waveform generating apparatus, be connected, for receiving ultrasound wave rf data that described beam synthesizer generates, send to control parameter to described Waveform generating apparatus and send and control parameter and delay data to described beam synthesizer;
Multi-purpose computer, be connected with described data transmission device; Described multi-purpose computer receives described ultrasound wave rf data, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission device.
Optionally, described receiving trap comprises low noise amplifier circuit, Anti-aliasing Filter Circuits and the D/A conversion circuit be linked in sequence; Described low noise amplifier circuit is connected with described ultrasonic probe; Described digital analog converter is connected with described beam synthesizer.
Optionally, described receiving trap only comprises low noise amplifier circuit, Anti-aliasing Filter Circuits and D/A conversion circuit, with amplification, filtering and the analog digital conversion that completes ultrasonic echo.
Optionally, described beam synthesizer, only complete reception, interpolation arithmetic, digital focus, the apodization computing of the digitalized ultrasonic ripple echo that described receiving trap produces and add and computing, thereby obtaining the ultrasound wave rf data.
Optionally, described ultrasonic imaging apparatus consists of described Waveform generating apparatus, described emitter, described ultrasonic probe, described receiving trap, described beam synthesizer, described data transmission device and described multi-purpose computer.
Technical solution problem of the present invention also can adopt following technical scheme: a kind of ultrasonic imaging apparatus, it is characterized in that, described ultrasonic imaging apparatus comprises: ultrasonic probe, high pressure buffer circuit, high pressure radiating circuit, analog front-end chip, emission receive FPGA, data transmission FPGA and multi-purpose computer;
Described emission receives FPGA and comprises parameter receive logic module, waveform generation logic module and data processing module; Described parameter receive logic module is connected to described data transmission FPGA, receives control parameter and delay data that described data transmission FPGA sends; Described parameter receive logic module also is connected to described waveform generation logic module, for controlling described waveform generation module, produces the low pressure transmitted waveform;
Described high pressure radiating circuit is connected to described waveform generation logic module, for described low pressure transmitted waveform is converted to the high pressure transmitted waveform;
Described high pressure buffer circuit is connected to described high pressure radiating circuit, for described ultrasonic probe is carried out to the high pressure isolation;
Described ultrasonic probe is connected to described high pressure buffer circuit, for launching ultrasound wave and receiving ultrasonic echo;
Described analog front-end chip is connected to described high pressure buffer circuit, and amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo;
Described data processing module is connected to analog front-end chip and parameter receive logic module, receive described digitalized ultrasonic ripple echo, and, under the control of described parameter receive logic module, described digitalized ultrasonic ripple echo is processed, obtain the ultrasound wave rf data;
Described data transmission FPGA is connected to described data processing module, and described ultrasound wave rf data is passed to multi-purpose computer;
Described multi-purpose computer is connected to described data transmission FPGA by the PCIE interface; Described multi-purpose computer receives described ultrasound wave rf data, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission FPGA.
The present invention also provides a kind of method for ultrasonic imaging that utilizes described ultrasonic imaging apparatus, comprising:
1) multi-purpose computer, by user's operating platform, receives user instruction, formation control parameter and delay data, and described control parameter and delay data are sent to data transmission device;
2) data transmission device, according to described control parameter, is controlled described Waveform generating apparatus, produces corresponding low pressure transmitted waveform;
3) described emitter receives described low pressure transmitted waveform, is converted into the high pressure transmitted waveform, and launches by ultrasonic probe;
4) described receiving trap receives hyperacoustic echo of described ultrasonic probe emission, is amplified, filtering and analog digital conversion, obtains digitalized ultrasonic ripple echo;
5) described beam synthesizer, according to control parameter and the delay data of described data transmission device, completes digital beam by the digitalized ultrasonic ripple echo of its reception synthetic, obtains the ultrasound wave rf data;
6) described data transmission device is sent to multi-purpose computer by described ultrasound wave rf data;
7) described multi-purpose computer carries out demodulation, detection, log-compressed, scan conversion and Doppler signal processing to described ultrasound wave rf data, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission device.
Optionally, described " beam synthesizer, according to control parameter and the delay data of described data transmission device, completes digital beam by the digitalized ultrasonic ripple echo of its reception synthetic, obtains the ultrasound wave rf data " specifically comprises:
A. receive control parameter and delay data that described multi-purpose computer sends;
B. receive described digitalized ultrasonic ripple echo;
C. described digitalized ultrasonic ripple echo is done to interpolation arithmetic, data after the acquisition interpolation:
D. by data after interpolation, be stored in delay memory;
E. the delay data that utilizes described multi-purpose computer to send, the read latch storer, obtain and focus on rear data;
F. carry out the apodization computing to focusing on rear data, data after the acquisition apodization;
G. data after apodization are summed up to computing, obtain the ultrasound wave rf data.
Optionally, described interpolation algorithm is:
y(2k)=x(k)，
Wherein x (k) is digitalized ultrasonic ripple echo, and y (2k) and y (2k+1) are data after interpolation, and k=(0,1 ... n).
Optionally, described delay data comprises the synthetic delay data of launching beam and the synthetic delay data of received beam.
Optionally, at each sampled point, generate a delay data, described beam synthesizer utilizes described received beam to synthesize delay data, realizes point-by-point focusing.
Optionally, the trace-changing coefficient of described apodization computing sends to beam synthesizer by multi-purpose computer by data transmission device.
The present invention has following beneficial effect: described ultrasonic imaging apparatus adopts hardware circuit to realize the amplification of ultrasonic echo, filtering and digital-to-analogue conversion, ultrasonic echo is processed into to digitalized ultrasonic ripple echo, then utilize described beam synthesizer that described digitalized ultrasonic ripple Echo Processing is become to the ultrasound wave rf data, and send to multi-purpose computer by data transmission device, utilize the processing power of the CPU of multi-purpose computer, complete the macrooperation amount link of ultrasonic echo in processing----demodulation, detection, log-compressed, scan conversion and Doppler signal are processed, thereby do not need exploitation to separate the hardware circuit of the processing such as mediation detection, reduced development difficulty, saved hardware cost, and realize above-mentioned functions by program, facilitate secondary development.
Described method for ultrasonic imaging, for described supersonic imaging device, it adopts multi-purpose computer to realize the demodulation of ultrasound wave rf data, detection, log-compressed, scan conversion and Doppler signal processing, reduced development difficulty, realize the ultrasonic echo processing by progressive number, facilitate secondary development.
The accompanying drawing explanation
The structural representation that Fig. 1 is ultrasonic imaging apparatus of the present invention;
Fig. 2 is the synthetic process flow diagram that obtains the ultrasound wave rf data of wave beam of the present invention;
The structural representation of another embodiment that Fig. 3 is super ultrasonic imaging apparatus of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is further elaborated.
Embodiment 1
With reference to accompanying drawing 1, the present embodiment provides a kind of ultrasonic imaging apparatus, and described ultrasonic imaging apparatus comprises: Waveform generating apparatus 4, for generation of the low pressure transmitted waveform; The ceiling voltage of described low pressure transmitted waveform is controlled by described Waveform generating apparatus 4, identical with the supply voltage of described Waveform generating apparatus 4; Emitter 2, be connected with described Waveform generating apparatus 4; Be converted to the high pressure transmitted waveform for the low pressure transmitted waveform that described Waveform generating apparatus 4 is produced; Described high pressure transmitted waveform is to be suitable for the transmitted waveform that ultrasonic probe is launched; Ultrasonic probe 1, be connected with described emitter 2; For launching ultrasound wave and receiving ultrasonic echo; Receiving trap 3, be connected in described ultrasonic probe 1; Amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo; Described receiving trap comprises low noise amplifier circuit, Anti-aliasing Filter Circuits and the D/A conversion circuit be linked in sequence; Described low noise amplifier circuit is connected with described ultrasonic probe; Beam synthesizer 5, be connected with the digital analog converter in described receiving trap 3, receives described digitalized ultrasonic ripple echo, and described digitalized ultrasonic ripple echo is carried out to wave beam and synthesize, and obtains the ultrasound wave rf data; Data transmission device 6, with described beam synthesizer 5, with described Waveform generating apparatus 4, be connected, for receiving ultrasound wave rf data that described beam synthesizer 5 generates, send to control parameter to described Waveform generating apparatus 4 and send and control parameter and delay data to described beam synthesizer 5; Multi-purpose computer 7, be connected with described data transmission device 6; Described multi-purpose computer 7 receives described ultrasound wave rf data, pass through software approach, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by data transmission device; Described multi-purpose computer refers to the computing machine that every profession and trade, various working environment can be used, the computing machine that users such as school, family, factory, hospital, company can use.
Described ultrasonic imaging apparatus adopts hardware circuit to realize the amplification of ultrasonic echo, filtering and digital-to-analogue conversion, ultrasonic echo is processed into to digitalized ultrasonic ripple echo, then utilize described beam synthesizer that described digitalized ultrasonic ripple Echo Processing is become to the ultrasound wave rf data, and send to multi-purpose computer by data transmission device, utilize the processing power of the CPU of multi-purpose computer, complete the macrooperation amount link of ultrasonic echo in processing----demodulation, detection, log-compressed, scan conversion and Doppler signal are processed, thereby do not need exploitation to separate the hardware circuit of the processing such as mediation detection, reduced development difficulty, and realize above-mentioned functions by program, facilitate secondary development.
Wherein, described receiving trap 3, only complete amplification, filtering and the analog digital conversion of echoed signal; Only comprise low noise amplifier circuit, Anti-aliasing Filter Circuits and D/A conversion circuit; The function that described receiving trap completes is fewer, and the function of the chip comprised will be fewer, thereby the price of chip is also just corresponding lower, thereby reduces the cost of development of whole system.
Wherein, described beam synthesizer 5, only complete reception, interpolation arithmetic, digital focus, the apodization computing of the digitalized ultrasonic ripple echo that described receiving trap 3 produces and add and computing, thereby obtaining the ultrasound wave rf data; Described beam synthesizer does not comprise separates the mediation detection to the digitizing ultrasonic echo, thereby need not adopt expensive chip to realize the processing to ultrasonic echo, has reduced the cost of whole system.
With reference to Fig. 3, the present embodiment provides a kind of ultrasonic imaging apparatus, and described ultrasonic imaging apparatus comprises: ultrasonic probe 507, high pressure buffer circuit 506, high pressure radiating circuit 504, general-purpose simulation front-end chip 505, emission receive FPGA501, data transmission FPGA502 and multi-purpose computer 503; Described emission receives FPGA and comprises parameter receive logic module, waveform generation logic module and data processing module; Described parameter receive logic module is connected to described data transmission FPGA502, receives control parameter and delay data that described data transmission FPGA sends; Described parameter receive logic module also is connected to described waveform generation logic module; Produce the low pressure transmitted waveform for controlling described waveform generation module; Described high pressure radiating circuit 504 is connected to described waveform generation logic module, for described low pressure transmitted waveform is converted to the high pressure transmitted waveform; High pressure buffer circuit 506, it is connected to high pressure radiating circuit 504, for ultrasonic probe 507 is carried out to the high pressure isolation; Described ultrasonic probe is connected to described high pressure buffer circuit 506, for launching ultrasound wave and receiving ultrasonic echo; General-purpose simulation front-end chip 505, it is connected to described high pressure buffer circuit 506, and amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo; Described data processing module is connected to general-purpose simulation front-end chip 505 and parameter receive logic module, receive described digitalized ultrasonic ripple echo, and, under the control of described parameter receive logic module, described digitalized ultrasonic ripple echo is processed, obtain the ultrasound wave rf data; Described data transmission FPGA502 is connected to described data processing module, and described ultrasound wave rf data is passed to multi-purpose computer 503; Described multi-purpose computer 503 is by PCIE(Peripheral Component Interconnection Express, and external unit is interconnected fast, lower with) interface is connected to described data transmission FPGA502; Described multi-purpose computer 503 receives described ultrasound wave rf data, pass through software approach, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by data transmission FPGA.
Described ultrasonic imaging apparatus adopts the general-purpose simulation front-end chip, the amplification of ultrasonic echo, filtering and digital-to-analogue conversion, ultrasonic echo is processed into to digitalized ultrasonic ripple echo, then utilize described emission to receive FPGA described digitalized ultrasonic ripple Echo Processing is become to the ultrasound wave rf data, and send to multi-purpose computer by data transmission FPGA, utilize the processing power of the CPU of multi-purpose computer, complete the macrooperation amount link of ultrasonic echo in processing----demodulation, detection, log-compressed, scan conversion and Doppler signal are processed, the function that this emission reception FPGA and data transmission FPGA realize is less, and do not need a large amount of computings, adopt cheap FPGA on market can realize above-mentioned functions, therefore, can reduce the cost of development of whole system, and do not need exploitation to separate the hardware circuit that the mediation detection is processed yet, reduced development difficulty, and realize above-mentioned functions by program, facilitate secondary development.
A kind of method for ultrasonic imaging that utilizes described ultrasonic imaging apparatus, described method for ultrasonic imaging comprises:
1) multi-purpose computer, by user's operating platform, receives user instruction, formation control parameter and delay data, and described control parameter and delay data are sent to data transmission device;
2) data transmission device, according to described control parameter, is controlled described Waveform generating apparatus, produces corresponding low pressure transmitted waveform;
3) described emitter receives described low pressure transmitted waveform, is converted into the high pressure transmitted waveform, and launches by ultrasonic probe;
4) described receiving trap receives hyperacoustic echo of described ultrasonic probe emission, is amplified, filtering and analog digital conversion, obtains digitalized ultrasonic ripple echo;
5) described beam synthesizer, according to control parameter and the delay data of described data transmission device, completes digital beam by the digitalized ultrasonic ripple echo of its reception synthetic, obtains the ultrasound wave rf data;
6) described data transmission device is sent to multi-purpose computer by described ultrasound wave rf data;
7) described multi-purpose computer is separated mediation detection, log-compressed, scan conversion and Doppler signal processing to described ultrasound wave rf data, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission device.
Described method for ultrasonic imaging, adopted computing machine to process and display described ultrasound wave radiofrequency signal, utilize the powerful arithmetic capability of computer CPU partly to carry out the data processing to the macrooperation amount in the ultrasonic echo processing, improved greatly arithmetic speed, do not need the hardware circuit of project organization complexity simultaneously yet, reduce system cost, facilitated secondary development.
With reference to Fig. 2, the step that described beam synthesizer is processed described digitalized ultrasonic ripple echo is:
A. receive control parameter and delay data that described multi-purpose computer sends;
B. receive described digitalized ultrasonic ripple echo;
C. described digitalized ultrasonic ripple echo is done to interpolation arithmetic, data after the acquisition interpolation:
D. by data after interpolation, be stored in delay memory;
E. the delay data that utilizes multi-purpose computer to send, the read latch storer, obtain and focus on rear data;
F. carry out the apodization computing to focusing on rear data, data after the acquisition apodization;
G. data after apodization are summed up to computing, obtain the ultrasound wave rf data.
With reference to Fig. 3, the step of the data handling procedure of described data processing module is:
A. receive control parameter and delay data that described multi-purpose computer sends;
B. receive described digitalized ultrasonic ripple echo;
C. described digitalized ultrasonic ripple echo is done to interpolation arithmetic, data after the acquisition interpolation:
D. by data after interpolation, be stored in delay memory;
E. the delay data that utilizes multi-purpose computer to send, the read latch storer, obtain and focus on rear data;
F. carry out the apodization computing to focusing on rear data, data after the acquisition apodization;
G. data after apodization are summed up to computing, obtain the ultrasound wave rf data;
H. described ultrasound wave rf data is packed.
The sequencing of above embodiment only, for ease of describing, does not represent the quality of embodiment.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a ultrasonic imaging apparatus, is characterized in that, described ultrasonic imaging apparatus comprises:
Waveform generating apparatus, for generation of the low pressure transmitted waveform;
Emitter, be connected with described Waveform generating apparatus, for the low pressure transmitted waveform that described Waveform generating apparatus is produced, is converted to the high pressure transmitted waveform;
Ultrasonic probe, be connected with described emitter, for launching ultrasound wave and receiving ultrasonic echo;
Receiving trap, be connected with described ultrasonic probe, and amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo;
Beam synthesizer, be connected with described receiving trap, receives described digitalized ultrasonic ripple echo, and described digitalized ultrasonic ripple echo is carried out to wave beam and synthesize, and obtains the ultrasound wave rf data;
Data transmission device, with described beam synthesizer, with described Waveform generating apparatus, be connected, for receiving ultrasound wave rf data that described beam synthesizer generates, send to control parameter to described Waveform generating apparatus and send and control parameter and delay data to described beam synthesizer;
Multi-purpose computer, be connected with described data transmission device; Described multi-purpose computer receives described ultrasound wave rf data, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission device.
2. ultrasonic imaging apparatus according to claim 1, it is characterized in that: described receiving trap comprises low noise amplifier circuit, Anti-aliasing Filter Circuits and the D/A conversion circuit be linked in sequence; Described low noise amplifier circuit is connected with described ultrasonic probe; Described digital analog converter is connected with described beam synthesizer.
3. ultrasonic imaging apparatus according to claim 2, is characterized in that, described receiving trap is comprised of low noise amplifier circuit, Anti-aliasing Filter Circuits and D/A conversion circuit, with amplification, filtering and the analog digital conversion that completes ultrasonic echo.
4. ultrasonic imaging apparatus according to claim 3, it is characterized in that: described beam synthesizer, only complete reception, interpolation arithmetic, digital focus, the apodization computing of the digitalized ultrasonic ripple echo that described receiving trap produces and add and computing, thereby obtaining the ultrasound wave rf data.
5. according to the described ultrasonic imaging apparatus of one of claim 1 to 4, it is characterized in that: described ultrasonic imaging apparatus consists of described Waveform generating apparatus, described emitter, described ultrasonic probe, described receiving trap, described beam synthesizer, described data transmission device and described multi-purpose computer.
6. a ultrasonic imaging apparatus, is characterized in that, described ultrasonic imaging apparatus comprises: ultrasonic probe, high pressure buffer circuit, high pressure radiating circuit, analog front-end chip, emission receive FPGA, data transmission FPGA and multi-purpose computer;
Described emission receives FPGA and comprises parameter receive logic module, waveform generation logic module and data processing module; Described parameter receive logic module is connected to described data transmission FPGA, receives control parameter and delay data that described data transmission FPGA sends; Described parameter receive logic module also is connected to described waveform generation logic module, for controlling described waveform generation module, produces the low pressure transmitted waveform;
Described high pressure radiating circuit is connected to described waveform generation logic module, for described low pressure transmitted waveform is converted to the high pressure transmitted waveform;
Described high pressure buffer circuit is connected to described high pressure radiating circuit, for described ultrasonic probe is carried out to the high pressure isolation;
Described ultrasonic probe is connected to described high pressure buffer circuit, for launching ultrasound wave and receiving ultrasonic echo;
Described analog front-end chip is connected to described high pressure buffer circuit, and amplification, filtering and analog digital conversion for ultrasonic echo, obtain digitalized ultrasonic ripple echo;
Described data processing module is connected to analog front-end chip and parameter receive logic module, receive described digitalized ultrasonic ripple echo, and, under the control of described parameter receive logic module, described digitalized ultrasonic ripple echo is processed, obtain the ultrasound wave rf data;
Described data transmission FPGA is connected to described data processing module, and described ultrasound wave rf data is passed to multi-purpose computer;
Described multi-purpose computer is connected to described data transmission FPGA; Receive described ultrasound wave rf data, the demodulation, detection, log-compressed, scan conversion and the Doppler signal that complete the ultrasound wave rf data are processed, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission FPGA.
7. the method for ultrasonic imaging for the described ultrasonic imaging apparatus of one of claim 1 to 5, is characterized in that, described method for ultrasonic imaging comprises:
1) multi-purpose computer, by user's operating platform, receives user instruction, formation control parameter and delay data, and described control parameter and delay data are sent to data transmission device;
2) data transmission device, according to described control parameter, is controlled described Waveform generating apparatus, produces corresponding low pressure transmitted waveform;
3) utilize emitter to receive described low pressure transmitted waveform, be converted into the high pressure transmitted waveform, ultrasonic probe generates ultrasound wave and is launched according to described high pressure transmitted waveform, and receives described ultrasound wave and run into the ultrasonic echo produced after obstacle;
4) utilize receiving trap to receive described ultrasonic echo, and amplified, the conversion of filtering and analog digital, obtain digitalized ultrasonic ripple echo;
5) utilize beam synthesizer to receive described digitalized ultrasonic ripple echo, according to control parameter and the delay data of described data transmission device, described digitalized ultrasonic ripple echo is completed to digital beam synthetic, obtain the ultrasound wave rf data;
6) utilize data transmission device that described ultrasound wave rf data is sent to multi-purpose computer;
7) utilizing multi-purpose computer to separate mediation detection, log-compressed, scan conversion and Doppler signal to described ultrasound wave rf data processes, and show image and the user is provided operating platform, send and control parameter and delay data by described data transmission device.
8. method for ultrasonic imaging according to claim 7, it is characterized in that: described " utilizing beam synthesizer to receive described digitalized ultrasonic ripple echo; according to control parameter and the delay data of described data transmission device; described digitalized ultrasonic ripple echo to be completed to digital beam synthetic, obtain the ultrasound wave rf data " specifically comprises:
A. utilize beam synthesizer to receive control parameter and delay data that described multi-purpose computer sends;
B. utilize beam synthesizer to receive described digitalized ultrasonic ripple echo;
C. described digitalized ultrasonic ripple echo is done to interpolation arithmetic, data after the acquisition interpolation:
D. by data after interpolation, be stored in delay memory;
E. the delay data that utilizes described multi-purpose computer to send, the read latch storer, obtain and focus on rear data;
F. carry out the apodization computing to focusing on rear data, data after the acquisition apodization;
G. data after apodization are summed up to computing, obtain the ultrasound wave rf data.
9. method for ultrasonic imaging according to claim 8, it is characterized in that: described interpolation algorithm is:
y(2k)=x(k)，
Wherein x (k) is digitalized ultrasonic ripple echo, and y (2k) and y (2k+1) are data after interpolation, and k=(0,1 ... n).
10. method for ultrasonic imaging according to claim 7 is characterized in that: described delay data comprises the synthetic delay data of launching beam and the synthetic delay data of received beam.
11. method for ultrasonic imaging according to claim 10 is characterized in that: generate a delay data at each sampled point, described beam synthesizer utilizes described received beam to synthesize delay data, realizes point-by-point focusing.
12. the method for ultrasonic imaging that ultrasound wave rf data according to claim 8 sends, it is characterized in that: the trace-changing coefficient of described apodization computing sends to beam synthesizer by multi-purpose computer by data transmission device.
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