CN105212964B - Based on RF data ultrasonic imaging processing method and system - Google Patents
Based on RF data ultrasonic imaging processing method and system Download PDFInfo
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Abstract
It is provided by the invention to be based on RF data ultrasonic imaging processing method and system, also referred to as RF metadata platform technology, it the described method comprises the following steps: S1, receiving by sending echo-signal acquired in ultrasonic signal；S2, Beam synthesis is carried out to the echo-signal；RF data in S3, the acquisition echo-signal；S4, based on acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.It is of the invention based on RF data ultrasonic imaging processing method and system, after obtaining the RF data in the echo-signal, based on acquired RF data, carry out ultrasonic imaging processing, directly to obtain target image；Compared with prior art, the system structure is simple, but does not lose data information, improves the real-time performance and picture quality of the diasonograph using the processing method and system, keep diagnostic message and axial resolution more careful, clear, while reducing manufacturing cost and use cost.
Description
Technical field
The invention belongs to ultrasonic diagnostic imaging fields, are related to a kind of based on RF data ultrasonic imaging processing method and system.
Background technique
With the development of the related-art technologies such as electronics, computer, material science；In recent years, the function of diasonograph
It can be greatly improved, revolutionary leap again and again also has occurred in medical ultrasound diagnosis technology therewith, has become at present
The essential tool of ultrasound diagnosis when the prefered method and ultrasonic imaging of clinical a variety of medicals diagnosis on disease；Correspondingly, B-mode is ultrasonic
Imaging, the imaging of CF mode ultrasound, PW mode ultrasound imaging etc. are most basic and most widely used technologies in excusing from death imaging system.
The ultrasonic imaging of various modes has many clinical applications, the state as being used to monitor fetus in obstetrics, internal medicine cardiac valve disease
Disease diagnosis etc..There is an a lot of research and application to ultrasonic imaging technique both at home and abroad, but it is continuous due to ultrasonic device
It updates, the application requirements such as ultrasound detection and clinical diagnosis are continuously improved, and new content, new technology emerge one after another, and existing research is much
It is unable to satisfy the demand of ultrasonic imaging application.
The ultrasonic imaging technique of traditional mode: including three front-end processing, intermediate treatment and post-processing parts；Wherein, preceding
Radiofrequency signal of the end processing for being focused, intermediate treatment is for obtaining baseband signal, and back-end processing is for showing through scanning
Signal after conversion.Since the technology of post-processing is also in initial development stage and the processing capacity of computer, existing skill
In art, the intermediate treatment process use by echo-signal be divided into I Q two paths of signals, and the echo-signal is done accordingly
The processing of down-sampled and demotion with the processing capacity of matching computer, therefore supports entire process flow to need a large amount of hardware supporteds,
Especially intermediate treatment process, it usually needs special chip or digital signal processor realize, causes to handle link extremely multiple
It is miscellaneous.Such as: the flow chart of ultrasonic imaging processing method in the prior art as shown in Figure 1 the described method comprises the following steps: P1,
It receives by sending echo-signal acquired in ultrasonic signal；P2, Beam synthesis is carried out to the echo-signal；P3, institute is obtained
State the RF data in echo-signal；P4, the RF data are carried out with quadrature demodulation or Hibert transformation, the RF data is divided into
Two-way I/Q orthogonal signalling；P5, the two-way I/Q orthogonal signalling obtained in step P4 are done into baseband filtering or low-pass filtering treatment, with
And demotion down-sampled to two-way I/Q orthogonal signalling processing；P6, it is based on by the processed two-way I/Q of step P5 just
Signal is handed over, ultrasonic imaging processing is carried out, to obtain target image.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of structure is simple, but data information is not lost
Based on RF data ultrasonic imaging processing method and system.
One of in order to achieve the above-mentioned object of the invention, one kind of the invention is based on RF data ultrasonic imaging processing method, described
Method the following steps are included:
S1, it receives by sending echo-signal acquired in ultrasonic signal；
S2, Beam synthesis is carried out to the echo-signal；
RF data in S3, the acquisition echo-signal；
S4, based on acquired RF data, ultrasonic imaging processing is directly carried out using CF mode treatment, to obtain target figure
Picture；
The CF mode treatment specifically includes:
In conjunction with CrossCorrelation algorithm and AutoCorrelation algorithm is used, to acquired RF data, directly
Row ultrasonic imaging processing is tapped into, to obtain target image；
Wherein, a rough deviant is first calculated using CrossCorrelation algorithm, is obtained based on rough deviant
Corresponding RF data are taken, then calculate a precision offset value with AutoCorrelation algorithm, by rough deviant and accurately
Deviant is added to obtain final accurate deviant, during calculating precision offset value using AutoCorrelation algorithm,
It only needs to carry out RF data interim hilbert demodulation.
As a further improvement of the present invention, after the step S3, the method also includes: to acquired RF number
According to being pre-processed, the system noise in the RF data is removed.
As a further improvement of the present invention, noise of the removal system in silent status.
As a further improvement of the present invention, the method also includes: if noise RF of the system in silent status
Signal data is I0, ultrasonic echo RF signal data obtained in actual use is I, then passes through I-I0It removes in the RF data
System noise.
One of in order to achieve the above-mentioned object of the invention, an embodiment of the present invention provides a kind of based at the ultrasonic imaging of RF data
Reason system, the system comprises:
Ultrasonic probe module, for sending and receiving ultrasonic signal；
Ultrasonic echo receiving module sends echo-signal acquired in ultrasonic signal for receiving to pass through；
Beam synthesis module, for carrying out Beam synthesis to the echo-signal；
RF data transmit memory module, for obtaining the RF data in the echo-signal；
Image processing module, for directly being carried out at ultrasonic imaging using CF mode treatment based on acquired RF data
Reason, to obtain target image；
Described image processing module uses the CF mode treatment to obtain target image are as follows:
In conjunction with CrossCorrelation algorithm and AutoCorrelation algorithm is used, to acquired RF data, directly
Row ultrasonic imaging processing is tapped into, to obtain target image；
Wherein, a rough deviant is first calculated using CrossCorrelation algorithm, is obtained based on rough deviant
Corresponding RF data are taken, then calculate a precision offset value with AutoCorrelation algorithm, by rough deviant and accurately
Deviant is added to obtain final accurate deviant, during calculating precision offset value using AutoCorrelation algorithm,
It only needs to carry out RF data interim hilbert demodulation.
As a further improvement of the present invention, the system also includes preprocessing module, the preprocessing module for pair
Acquired RF data are pre-processed, and the system noise in the RF data is removed.
As a further improvement of the present invention, the preprocessing module is specifically used for removal system making an uproar in silent status
Sound.
As a further improvement of the present invention, the preprocessing module is also used to: if the system is in silent status
Noise RF signal data is I0, ultrasonic echo RF signal data obtained in actual use is I, then passes through I-I0Remove the RF
System noise in data.
RF data based on RF data ultrasonic imaging processing method and system, in the acquisition echo-signal of the invention
Afterwards, based on acquired RF data, directly progress ultrasonic imaging processing, to obtain target image；Compared with prior art, this is
Structure of uniting is simple, but does not lose data information, improves the real-time performance of the diasonograph using the processing method and system
And picture quality, keep diagnostic message and axial resolution more careful, clear, while reducing manufacturing cost and use cost.
Detailed description of the invention
Fig. 1 is the flow chart of the ultrasonic imaging processing method provided in the prior art；
Fig. 2 is the flow chart based on RF data ultrasonic imaging processing method that first embodiment of the invention provides；
Fig. 3 is the flow chart based on RF data ultrasonic imaging processing method that second embodiment of the invention provides；
Fig. 4 is the module diagram based on RF data ultrasonic imaging processing system that first embodiment of the invention provides；
Fig. 5 is the module diagram based on RF data ultrasonic imaging processing system that second embodiment of the invention provides.
Specific embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But embodiment is not intended to limit this
Invention, structure that those skilled in the art are made according to these embodiments, method or transformation functionally are wrapped
Containing within the scope of the present invention.
As shown in Fig. 2, Fig. 2 is the stream based on RF data ultrasonic imaging processing method that first embodiment of the invention provides
Cheng Tu.Correspondingly, the described method comprises the following steps:
S1, it receives by sending echo-signal acquired in ultrasonic signal；
S2, Beam synthesis is carried out to the echo-signal；
RF data in S3, the acquisition echo-signal；
S4, based on acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.
Above to the description based on RF data ultrasonic imaging processing method, step S1, S2, S3 substantially with retouched in Fig. 1
The prior art stated is identical, is not described in detail herein.Difference with the prior art of the present invention is, based on acquired RF number
According to directly progress ultrasonic imaging processing, to obtain target image.Although realizing that the structure of this method is simple, data are not lost
Information；And the real-time performance and picture quality of the diasonograph using the processing method and system are improved, make diagnostic message
It is more careful, clear with axial resolution, while reducing manufacturing cost and use cost.
Correspondingly, " RF " in the RF data is English: radio frequency, Chinese: the abbreviation of radiofrequency signal.
The following contents will be described in detail a specific embodiment of the invention.
Correspondingly, the step S4 is specifically included: based on acquired RF data, being handled using B-mode, CF mode treatment
And PW mode treatment, to obtain target image.
Correspondingly, " CF " in the CF mode treatment is English: color flow, Chinese: the abbreviation of blood flow imaging.Institute
State the abbreviation that " PW " in PW mode treatment is pulse Doppler.
Specifically, in a preferred embodiment of the invention, B-mode processing is used to specifically include to obtain target image:
Grey scale mapping imaging is carried out to the RF data of acquisition.Correspondingly, there are two types of modes, and the B-mode processing may be implemented.
Embodiment one, it is assumed that the RF signal data of Beam synthesis output is I, takes the absolute value of this RF signal data | I |
Carry out grey scale mapping imaging.
Embodiment two, it is assumed that the RF signal data of Beam synthesis output is I=A × Cos ω t, construction
Then obtain:
It is obtained by above formula:In conjunction with
Obtain tg (ω t)；
At this point, taking the mould of RF signal data | A |=| I/Cos ω t | carry out grey scale mapping imaging.
Correspondingly, in a preferred embodiment of the invention, CF mode treatment is used to specifically include to obtain target image:
Acquired RF data are directly surpassed using ButterflySearch algorithm, or using CrossCorrelation algorithm
Acoustic imaging processing, to obtain target image.
Specifically, the ButterflySearch algorithm employed in the CF mode treatment are as follows: by anti-to target
The ultrasonic signal penetrated is scanned for along two dimensions of depth depth and time time, and the maximum butter line's of matching degree is oblique
The i.e. corresponding target of rate is axially moved speed.
The Chinese of the CrossCorrelation algorithm employed in the CF mode treatment is cross correlation algorithm, is led to
It crosses and computing cross-correlation is done along the direction depth depth to the ultrasonic signal of target reflection, the peak position of cross-correlation coefficient corresponds to
The bias size as caused by moving can then calculate target and be axially moved speed.The algorithm is based primarily upon target movement and produces
Raw time shift signal, reality successively do computing cross-correlation to two neighboring RF data in a sampling volume when calculating and obtain one
Speed, is then averaged all speed being calculated or intermediate value, as the final speed in the sampling volume.
Correspondingly, in a preferred embodiment of the invention, using improved CrossCorrelation algorithm to institute
The RF data of acquisition, directly progress ultrasonic imaging processing, to obtain target image.
Specifically, traditional CrossCorrelation algorithm can only obtain the deviant at integer sampled point interval, it must
Just can must accurately be deviated by way of interpolation, there are mainly two types of acquiring methods: method is inserted to RF signal in one
Value is to improve sample rate, and such a process increases computation complexities, and is unsatisfactory for requirement of real-time；Another method is to mutual
Relationship number carry out parabola or just, the interpolation of cosine needs while calculating although such method meets requirement to real-time
Ensure that true cross-correlation peak value is included in interpolation curve, the method is easy to be matched to the peak value of mistake.
In the preferred embodiment of the present invention, according to CrossCorrelation algorithm to acquired RF data, directly
Row ultrasonic imaging processing is tapped into, to obtain target image.Then on the basis of conventional CrossCorrelation algorithm, pass through elder generation
The method for testing value limits cross-correlation search range, to avoid the cross-correlation coefficient peak value of mistake is matched to, and simplifies
The complexity of CrossCorrelation algorithm meets the requirement of global search real-time.
Specifically, the time shift (or offset) on traditional RF signal is continuous on axially and transversely, therefore, priori value
Seek mode are as follows: take the offset of the previous point on current point the same line or the same position point in current point adjacent lines.
Such as: the offset of previous point on current point the same line is 2, then the offset of current point is just near 2, cross-correlation search model
Enclosing can be set between [1,3].
Correspondingly, in another preferred embodiment of the invention, according to CrossCorrelation algorithm to being obtained
The RF data taken, directly progress ultrasonic imaging processing can be combined with obtaining target image using CrossCorrelation
Algorithm and AutoCorrelation algorithm, to acquired RF data, directly progress ultrasonic imaging processing, to obtain target figure
Picture.
Specifically, a rough deviant is calculated using CrossCorrelation algorithm first, it is rough based on this
Deviant take corresponding RF signal, then an accurate deviant is calculated again with AutoCorrelation algorithm, by this
Two deviant additions are exactly final accurate deviant.
The Chinese of the AutoCorrelation algorithm is auto-correlation algorithm.
Correspondingly, before using CrossCorrelation algorithm, passing through priori value in conjunction with described in above content
Method limit cross-correlation search range, the deviant that can be put by a upper point or nearby directly as current point it is rough partially
Shifting value calculates accurate deviant using AutoCorrelation algorithm again later.It can be incited somebody to action using this kind of method
The calculation amount of CrossCorrelation algorithm is preferably minimized, and the AutoCorrelation carried out after ensure that calculates institute
The result of precision offset value is stated without aliasing.
During calculating the precision offset value using AutoCorrelation algorithm, it is only necessary to face RF signal
When hilbert demodulation, in algorithm layer, that is, implementable, system structure is simple, but does not lose data information.
Correspondingly, in a preferred embodiment of the invention, PW mode treatment is used to specifically include to obtain target image:
Using ButterflySearch algorithm to acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.
The ButterflySearch algorithm employed in the PW mode treatment are as follows: right for each velocity component
RF signal in sample boxes obtains data along the corresponding slope of the rate along the direction depth depth, calculates it to corresponding data
Energy size is shown to carry out frequency spectrum.
Correspondingly, using CF mode treatment and using PW mode treatment, calculating search process directly is being carried out to RF data
In, it is based on acquired RF data, directly progress ultrasonic imaging processing, to obtain target image；Compare the prior art, base
In being handled RF data to obtain I/Q orthogonal signalling, and ultrasonic imaging processing is carried out on the basis of I/Q orthogonal signalling,
To obtain target image；Acquired sampled data precision is higher during it, and calculated result is more accurate.
As shown in figure 3, Fig. 3 is the stream based on RF data ultrasonic imaging processing method that second embodiment of the invention provides
Cheng Tu.Correspondingly, second embodiment of the present invention and above-mentioned first embodiment are roughly the same, difference is: in step
After S3 obtains the RF data in the echo-signal, the method also includes following steps:
M1, acquired RF data are pre-processed, removes the system noise in the RF data.
Correspondingly, pre-processing to acquired RF data, the method for removing the system noise in the RF data has
Many kinds remove the system noise in the RF data using following methods in a preferred embodiment of the invention.
Correspondingly, noise RF signal data I of the removal acquisition system in silent status0, it is assumed that it is obtained in actual use
Ultrasonic echo RF signal data be I, then utilize I-I0It can achieve the effect of removal ambient noise.
Compared with prior art, of the invention based on RF data ultrasonic imaging processing method, obtaining the echo-signal
In RF data after, based on acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.This method is real
It is now simple, but data information is not lost, the real-time performance and picture quality of the diasonograph using the processing method are improved,
Keep diagnostic message and axial resolution more careful, clear, while reducing manufacturing cost and use cost.
As shown in figure 4, Fig. 4 is the mould based on RF data ultrasonic imaging processing system that first embodiment of the invention provides
Block schematic diagram.
Correspondingly, being based on RF data ultrasonic imaging processing system in first embodiment of the invention includes: ultrasonic probe mould
Block 100, for sending and receiving ultrasonic signal；Ultrasonic echo receiving module 200 is obtained for receiving by sending ultrasonic signal
The echo-signal taken；Beam synthesis module 300, for carrying out Beam synthesis to the echo-signal；RF data transmission storage mould
Block 400, for obtaining the RF data in the echo-signal；Image processing module 500, for based on acquired RF data,
Directly carry out ultrasonic imaging processing.
Correspondingly, " RF " in the RF data is English: radio frequency, Chinese: the abbreviation of radiofrequency signal.
Described image processing module 500 is also used to, and based on acquired RF data, is handled using B-mode, CF mode treatment and PW mould
Formula processing, to obtain target image.
Correspondingly, " CF " in the CF mode treatment is English: color flow, Chinese: the abbreviation of blood flow imaging.Institute
State the abbreviation that " PW " in PW mode treatment is pulse Doppler.
Specifically, in a preferred embodiment of the invention, described image processing module 500 uses B-mode processing to obtain
Take target image.Described image processing module 500 is specifically used for: carrying out grey scale mapping imaging to the RF data of acquisition.Correspondingly,
There are two types of modes, and the B-mode processing may be implemented.
Embodiment one, it is assumed that the RF signal data of Beam synthesis output is I, takes the absolute value of this RF signal data | I |
Carry out grey scale mapping imaging.
Embodiment two, it is assumed that the RF signal data of Beam synthesis output is I=A × Cos ω t, construction
Then obtain:
It is obtained by above formula:In conjunction with
Obtain tg (ω t)；
At this point, taking the mould of RF signal data | A |=| I/Cos ω t | carry out grey scale mapping imaging.
Correspondingly, in a preferred embodiment of the invention, described image processing module 500 uses CF mode treatment to obtain
Target image is taken, described image processing module 500 is specifically used for: using ButterflySearch algorithm, or used
CrossCorrelation algorithm is to acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.
Specifically, the ButterflySearch algorithm employed in the CF mode treatment are as follows: by anti-to target
The ultrasonic signal penetrated is scanned for along two dimensions of depth depth and time time, and the maximum butter line's of matching degree is oblique
The i.e. corresponding target of rate is axially moved speed.
The Chinese of the CrossCorrelation algorithm employed in the CF mode treatment is cross correlation algorithm, is led to
It crosses and computing cross-correlation is done along the direction depth depth to the ultrasonic signal of target reflection, the peak position of cross-correlation coefficient corresponds to
The bias size as caused by moving can then calculate target and be axially moved speed.The algorithm is based primarily upon target movement and produces
Raw time shift signal, reality successively do computing cross-correlation to two neighboring RF data in a sampling volume when calculating and obtain one
Speed, is then averaged all speed being calculated or intermediate value, as the final speed in the sampling volume.
The Chinese of the CrossCorrelation algorithm employed in the CF mode treatment is cross correlation algorithm, is led to
It crosses and computing cross-correlation is done along the direction depth depth to the ultrasonic signal of target reflection, the peak position of cross-correlation coefficient corresponds to
The bias size as caused by moving can then calculate target and be axially moved speed.The algorithm is based primarily upon target movement and produces
Raw time shift signal, reality successively do computing cross-correlation to two neighboring RF data in a sampling volume when calculating and obtain one
Speed, is then averaged all speed being calculated or intermediate value, as the final speed in the sampling volume.
Correspondingly, in a preferred embodiment of the invention, described image processing module 500 uses CF mode treatment to obtain
Take target image.Described image processing module 500 is specifically used for: using improved CrossCorrelation algorithm to being obtained
The RF data taken, directly progress ultrasonic imaging processing, to obtain target image.
Specifically, traditional CrossCorrelation algorithm can only obtain the deviant at integer sampled point interval, it must
Just can must accurately be deviated by way of interpolation, there are mainly two types of acquiring methods: method is inserted to RF signal in one
Value is to improve sample rate, and such a process increases computation complexities, and is unsatisfactory for requirement of real-time；Another method is to mutual
Relationship number carry out parabola or just, the interpolation of cosine needs while calculating although such method meets requirement to real-time
Ensure that true cross-correlation peak value is included in interpolation curve, the method is easy to be matched to the peak value of mistake.
In the preferred embodiment of the present invention, described image processing module 500 is according to CrossCorrelation algorithm
To acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.Then in routine
On the basis of CrossCorrelation algorithm, cross-correlation search range is limited by the method for priori value, to avoid mistake is matched to
Cross-correlation coefficient peak value accidentally, and the complexity of CrossCorrelation algorithm is simplified, meet global search real-time
It is required that.
Specifically, the time shift (or offset) on traditional RF signal is continuous on axially and transversely, therefore, priori value
Seek mode are as follows: take the offset of the previous point on current point the same line or the same position point in current point adjacent lines.
Such as: the offset of previous point on current point the same line is 2, then the offset of current point is just near 2, cross-correlation search model
Enclosing can be set between [1,3].
Correspondingly, in another preferred embodiment of the invention, described image processing module 500 according to
CrossCorrelation algorithm is to acquired RF data, directly progress ultrasonic imaging processing, to obtain target image.May be used also
With CrossCorrelation algorithm and AutoCorrelation algorithm, to acquired RF data, directly progress ultrasonic imaging
Processing, to obtain target image.
Specifically, described image processing module 500 calculates one roughly using CrossCorrelation algorithm first
Deviant, corresponding RF signal is taken based on the rough deviant, then calculates one again with AutoCorrelation algorithm
The addition of the two deviants is exactly final accurate deviant by a accurate deviant.
The Chinese of the AutoCorrelation algorithm is auto-correlation algorithm.
Correspondingly, described image processing module 500 is using CrossCorrelation in conjunction with described in above content
Before algorithm, cross-correlation search range is limited by the method for priori value, the deviant that can be put by a upper point or nearby is straight
The rough deviant as current point is connect, accurate deviant is calculated using AutoCorrelation algorithm again later.Using
The calculation amount of CrossCorrelation algorithm can be preferably minimized by this kind of method, and carried out after ensure that
AutoCorrelation calculates the result of the precision offset value without aliasing.
During calculating the precision offset value using AutoCorrelation algorithm, it is only necessary to face RF signal
When hilbert demodulation, in algorithm layer, that is, implementable, system structure is simple, but does not lose data information.
Correspondingly, in a preferred embodiment of the invention, described image processing module 500 uses PW mode treatment to obtain
Target image is taken to specifically include: using ButterflySearch algorithm to acquired RF data, directly at progress ultrasonic imaging
Reason, to obtain target image.
The ButterflySearch algorithm employed in the PW mode treatment are as follows: right for each velocity component
RF signal in sample boxes obtains data along the corresponding slope of the rate along the direction depth depth, calculates it to corresponding data
Energy size is shown to carry out frequency spectrum.
Correspondingly, described image processing module 500 is using CF mode treatment and uses PW mode treatment, directly to RF number
According to carrying out being the directly progress ultrasonic imaging processing, to obtain target figure based on acquired RF data in calculating search process
Picture；Compare the prior art, based on being handled RF data to obtain I/Q orthogonal signalling, and on the basis of I/Q orthogonal signalling
Upper progress ultrasonic imaging processing, to obtain target image；Acquired sampled data precision is higher during it, calculated result
It is more accurate.
As shown in figure 5, Fig. 5 is the mould based on RF data ultrasonic imaging processing system that second embodiment of the invention provides
Block schematic diagram.In order to be more clear the target image finally obtained based on RF data, it is shown in fig. 5 based on RF data ultrasound at
As increasing a preprocessing module 600, the preprocessing module on the basis of processing system first embodiment shown in Fig. 4
600, for pre-processing to acquired RF data, remove the system noise in the RF data, make the target finally obtained
Image is more clear, smoothly.
Correspondingly, the preprocessing module 600 pre-processes acquired RF data, remove in the RF data
There are many kinds of the methods of system noise, and in a preferred embodiment of the invention, the preprocessing module 600 uses following methods
Remove the system noise in the RF data.
Correspondingly, noise RF signal data I of the removal acquisition system in silent status0, it is assumed that it is obtained in actual use
Ultrasonic echo RF signal data be I, the preprocessing module 600 then utilize I-I0It can achieve the effect of removal ambient noise
Fruit.
Compared with prior art, of the invention based on RF data ultrasonic imaging processing method and system, also referred to as RF member number
According to platform technology, after obtaining the RF data in the echo-signal, based on acquired RF data, directly progress ultrasonic imaging
Processing, to obtain target image；Of the invention is simple based on RF data ultrasonic imaging processing system structure, but does not lose data letter
Breath, improves the real-time performance and picture quality of the diasonograph using the processing method and system, makes diagnostic message and axis
It is more careful to resolution ratio, clear, while reducing manufacturing cost and use cost.
For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each module can be realized in the same or multiple software and or hardware when application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
It realizes by means of software and necessary general hardware platform.Based on this understanding, the technical solution essence of the application
On in other words the part that contributes to existing technology can be embodied in the form of software products, the computer software product
It can be stored in and save in medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that a computer equipment
(can be personal computer, Information Push Server or the network equipment etc.) executes each embodiment of the application or reality
Apply method described in certain parts of mode.
Device embodiments described above are only schematical, wherein the module as illustrated by the separation member
It may or may not be physically separated, the component shown as module may or may not be physics mould
Block, it can it is in one place, or may be distributed on multiple network modules.It can be selected according to the actual needs
In some or all of the modules realize the purpose of present embodiment scheme.Those of ordinary skill in the art are not paying creation
Property labour in the case where, it can understand and implement.
The application can be used in numerous general or special purpose computing system environments or configuration.Such as: personal computer, information
Push server computer, handheld device or portable device, multi-processing module system, are based on micro process mould at laptop device
The system of block, set top box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer including to take up an official post
The distributed computing environment etc. of what system or equipment.
The application can describe in the general context of computer-executable instructions executed by a computer, such as program
Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group
Part, data structure etc..The application can also be practiced in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
It is saved in medium positioned at the local and remote computer including saving equipment.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from technical spirit of the present invention.
Claims (8)
1. one kind is based on RF data ultrasonic imaging processing method, which is characterized in that the described method comprises the following steps:
S1, it receives by sending echo-signal acquired in ultrasonic signal；
S2, Beam synthesis is carried out to the echo-signal；
RF data in S3, the acquisition echo-signal；
S4, based on acquired RF data, ultrasonic imaging processing is directly carried out using CF mode treatment, to obtain target image；
The CF mode treatment specifically includes:
In conjunction with use CrossCorrelation algorithm and AutoCorrelation algorithm, to acquired RF data, directly into
Row ultrasonic imaging processing, to obtain target image；
Wherein, a rough deviant is first calculated using CrossCorrelation algorithm, phase is obtained based on rough deviant
The RF data answered, then a precision offset value is calculated with AutoCorrelation algorithm, by rough deviant and precision offset
Value addition obtains final accurate deviant, during calculating precision offset value using AutoCorrelation algorithm, it is only necessary to
RF data are carried out with interim hilbert demodulation.
2. it is according to claim 1 be based on RF data ultrasonic imaging processing method, which is characterized in that the step S3 it
Afterwards, the method also includes: acquired RF data are pre-processed, the system noise in the RF data is removed.
3. according to claim 2 be based on RF data ultrasonic imaging processing method, which is characterized in that removal system is in silence
Noise when state.
4. according to claim 3 be based on RF data ultrasonic imaging processing method, which is characterized in that the method is also wrapped
It includes: if noise RF signal data of the system in silent status is I0, ultrasonic echo RF signal obtained in actual use
Data are I, then pass through I-I0Remove the system noise in the RF data.
5. one kind is based on RF data ultrasonic imaging processing system, which is characterized in that the system comprises:
Ultrasonic probe module, for sending and receiving ultrasonic signal；
Ultrasonic echo receiving module sends echo-signal acquired in ultrasonic signal for receiving to pass through；
Beam synthesis module, for carrying out Beam synthesis to the echo-signal；
RF data transmit memory module, for obtaining the RF data in the echo-signal；
Image processing module, for directly carrying out ultrasonic imaging processing using CF mode treatment based on acquired RF data, with
Obtain target image；
Described image processing module uses the CF mode treatment to obtain target image are as follows:
In conjunction with use CrossCorrelation algorithm and AutoCorrelation algorithm, to acquired RF data, directly into
Row ultrasonic imaging processing, to obtain target image；
Wherein, a rough deviant is first calculated using CrossCorrelation algorithm, phase is obtained based on rough deviant
The RF data answered, then a precision offset value is calculated with AutoCorrelation algorithm, by rough deviant and precision offset
Value addition obtains final accurate deviant, during calculating precision offset value using AutoCorrelation algorithm, it is only necessary to
RF data are carried out with interim hilbert demodulation.
6. according to claim 5 be based on RF data ultrasonic imaging processing system, which is characterized in that the system also includes
Preprocessing module, the preprocessing module are removed in the RF data and are for pre-processing to acquired RF data
System noise.
7. according to claim 6 be based on RF data ultrasonic imaging processing system, which is characterized in that the preprocessing module
Specifically for noise of the removal system in silent status.
8. according to claim 7 be based on RF data ultrasonic imaging processing system, which is characterized in that the preprocessing module
It is also used to: if noise RF signal data of the system in silent status is I0, ultrasonic echo RF obtained in actual use
Signal data is I, then passes through I-I0Remove the system noise in the RF data.
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| WO2017146886A1 (en) * | 2016-02-23 | 2017-08-31 | Mayo Foundation For Medical Education And Research | Ultrasound blood flow imaging |
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| CN106019254B (en) * | 2016-05-20 | 2018-03-20 | 中国人民解放军第四军医大学 | A kind of UWB impacts the more human body target distances of bioradar to separation discrimination method |
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| CN1095356C (en) * | 1998-03-13 | 2002-12-04 | 清华大学 | Mutual correlation-spectrum figure method in supersonic blood current measurement |
| JP3844667B2 (en) * | 2001-07-23 | 2006-11-15 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Ultrasonic diagnostic equipment |
| US6716171B1 (en) * | 2002-09-30 | 2004-04-06 | Koninklijke Philips Electronics N.V. | System and method for interfacing an ultrasound transducer with a computing device performing beamforming processing |
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