CN105761229B - The Enhancement Method and device of ultrasonic puncture needle image - Google Patents
The Enhancement Method and device of ultrasonic puncture needle image Download PDFInfo
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Abstract
The present invention is suitable for medical image process field, provides the Enhancement Method and device of a kind of ultrasonic puncture needle image.The described method includes: emitting deflection angle according to preset ultrasonic wave generates launch angle sequence, the preset ultrasonic wave transmitting deflection angle is arranged according to the frequency attribute and imaging characteristics of probe；The image stream of different attribute feature is generated according to the launch angle sequence；Described image stream is performed corresponding processing respectively according to the different attribute feature of image stream；Image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.The embodiment of the present invention can also make the launch angle sequence generated more meet the attribute of probe itself without user intervention, simplify operating procedure, and can obtain the image of apparent, accurate supermarket puncture needle.
Description
Technical field
The embodiment of the present invention belongs to medical image process field more particularly to a kind of Enhancement Method of ultrasonic puncture needle image
And device.
Background technique
The basis of ultrasonic imaging is sound wave reflection, and reflected energy forms image by a series of post-processings.In puncture process
In, puncture needle or injection needle will be pierced into patient's body at an angle, this is because the sound wave of normal transmission is with vertical angle
When degree contact dial, energy is had lost in reflection, weakens the needle signal of carrying.When the angle for being pierced into patient's body gradually becomes
Greatly, depth gradually deepens, and needle signal becomes highly unstable or even disappears, and if desired accurately the ultrasound of analysis patient itself is schemed
Picture then needs to determine the needle signal in ultrasound image.In 2D ultrasonic imaging, it will usually enhance the needle signal in ultrasound image with true
The fixed corresponding pin position of needle signal.
In the prior art, the enhancement method of needle signal is usual are as follows: except normal launch angle, then in launch angle
Suitable deflection angle is added in sequence, when so that the angle for being pierced into patient's body becoming larger, the obtained needle on deflection frame image is believed
It is number also more strong.But existing ultrasound products are opened in doctor generally by the way of presetting angle and puncture enhancing
Before, the deflection angle for manual setting to emit；Either puncture supporter is installed outside probe, several are set on puncture supporter and is fixed
The track of tilt angle, puncture needle need to enter human body from some track.It is pre- that both modes can instruct probe to receive
Angle information is set, then switch the direction of the launch, but the track of the setting or constant tilt angle of either deflection angle is set
It sets, requires user intervention, it is cumbersome, and since the experience of doctor is different, increase puncture risks.
Summary of the invention
The embodiment of the invention provides the Enhancement Methods and device of a kind of ultrasonic puncture needle image, it is intended to solve existing method
It needs user intervention that deflection angle is set, leads to cumbersome problem.
The embodiments of the present invention are implemented as follows, a kind of Enhancement Method of ultrasonic puncture needle image, which comprises
Emit deflection angle according to preset ultrasonic wave and generate launch angle sequence, the preset ultrasonic wave emits deflection angle
It is arranged according to the frequency attribute of probe and imaging characteristics；
The image stream of different attribute feature is generated according to the launch angle sequence；
Described image stream is performed corresponding processing respectively according to the different attribute feature of image stream；
Image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
The another object of the embodiment of the present invention is to provide a kind of enhancement device of ultrasonic puncture needle image, described device packet
It includes:
Launch angle sequence generating unit generates launch angle sequence for emitting deflection angle according to preset ultrasonic wave,
The preset ultrasonic wave transmitting deflection angle is arranged according to the frequency attribute and imaging characteristics of probe；
Image stream generation unit, for generating the image stream of different attribute feature according to the launch angle sequence；
Image stream processing unit, it is corresponding for being carried out respectively to described image stream according to the different attribute feature of image stream
Processing；
Image stream integrated unit, for the image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
In embodiments of the present invention, special according to the frequency attribute of probe and imaging due to preset ultrasonic wave transmitting deflection angle
Point setting simplifies operation it is therefore not necessary to which user intervention can also make the launch angle sequence generated more meet the attribute of probe itself
Step, and the more crucial image stream comprising needle body can be obtained according to the image stream that the launch angle sequence generates, to packet
After image stream containing needle body carries out denoising, fusion, the enhancing image of ultrasonic puncture needle is obtained, and the enhancing of ultrasonic puncture needle
Image is apparent, accurate, and the ultrasound image for subsequent accurate analysis patient itself provides strong foundation.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the Enhancement Method for ultrasonic puncture needle image that first embodiment of the invention provides；
Fig. 2 is the puncture angle of a kind of ultrasonic wave launch angle that first embodiment of the invention provides and ultrasonic puncture needle
Schematic diagram；
Fig. 3 is first embodiment of the invention offer to A0、A1、-A13 frame images of 3 launch angles carry out fusion treatment
Schematic diagram；
Fig. 4 is a kind of structure chart of the enhancement device for ultrasonic puncture needle image that second embodiment of the invention provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the embodiment of the present invention, deflection angle is emitted according to preset ultrasonic wave and generates launch angle sequence, according to the hair
Firing angle degree series generate the image stream of different attribute feature, are flowed into respectively to described image according to the different attribute feature of image stream
Row is corresponding to be handled, the image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.Wherein, described preset super
Sound wave emits deflection angle and is arranged according to the frequency attribute and imaging characteristics of probe.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Embodiment one:
Fig. 1 shows a kind of flow chart of the Enhancement Method of ultrasonic puncture needle image of first embodiment of the invention offer,
Details are as follows:
Step S11 emits deflection angle according to preset ultrasonic wave and generates launch angle sequence, the preset ultrasonic wave hair
Deflection angle is penetrated to be arranged according to the frequency attribute and imaging characteristics of probe.
When the addition deflection angle transmitting in emitting timing, in the image that is received, tissue and ultrasonic puncture needle
Performance larger difference is had according to the difference of deflection angle, cause the launch angle of these notable differences be referred to as ultrasonic wave transmitting
Deflection angle.Wherein, the puncture angle of ultrasonic wave launch angle and ultrasonic puncture needle is as shown in Figure 2.
Optionally, the preset ultrasonic wave transmitting deflection angle is arranged specific according to the frequency attribute and imaging characteristics of probe
Include:
A1, determine that ultrasonic wave emits the angular range where deflection angle according to the frequency attribute of probe.Due to variety classes
Probe possess different tranmitting frequency ranges, therefore can be determined according to the frequency attribute of probe ultrasonic wave transmitting deflection angle where
General angular range, with reduce search ultrasonic wave transmitting deflection angle workload.
A2, the image for emitting the return of the different deflection angles in the angular range is received, obtains (N+1) attribute characteristic pattern
As the information of stream, the N is more than or equal to 1.Specifically, user (staff for referring to producer) compares image stream, people in image stream
The image of body tissue and ultrasonic puncture needle can have larger difference, and to occur that (N+1) can be marked off as boundary at larger difference
Attribute characteristic image stream.
A3, (N+1) attribute characteristic image stream determines N number of angle based on the received, and N number of angle is as N number of ultrasound
Wave emits deflection angle.For example, it is assumed that image, when the angle of departure is TurPoint1, the image of tissue and ultrasonic puncture needle is sent out
Raw larger difference, and when the angle of departure is greater than the TurPoint1, image and the angle of departure of tissue and ultrasonic puncture needle are
TurPoint1 phase difference is little, then emits deflection angle for the TurPoint1 as a ultrasonic wave.
With N=2, (TurPoint1 is that the first preset ultrasonic wave emits deflection angle, and TurPoint2 is second default below
Ultrasonic wave emit deflection angle, and TurPoint2 > TurPoint1) for illustrate how determine ultrasonic wave transmitting deflection angle.Work as N
When=2, it is thus necessary to determine that 3 attribute characteristic image streams, it is assumed that launch angle Theta, in 0 < Theta < TurPoint1, if
Ultrasonic wave has preferable reaction for the needle body for the ultrasonic puncture needle that superficial punctures, and can also see needle clearly without using specially treated
Body；Tissue image will not deform substantially compared with common 0 ° of transmitting returns to image, will not lose too many brightness, carefully
Section is clear, then the image stream obtained 0 < Theta < TurPoint1 is as the first attribute characteristic image stream；TurPoint1 <
When Theta < TurPoint2, if the needle body being pierced into has preferable reaction, the sharp keen needle body that becomes clear can be seen on the image of return,
And tissue image will not deform substantially compared with common 0 ° transmitting returns to image, can retain big organization edge, but
As the increase of deflection angle can gradually lose some brightness and details, then TurPoint1 < Theta < TurPoint2 is obtained
Image stream as second of attributive character image stream；In TurPoint2 < Theta < 90, if the needle body being pierced into has preferably
Reaction, the image upper pin of return is still more bright, but needle body is extended to ribbon, tissue image and common 0 ° hair
Penetrate and return to image and compare, be badly deformed, lose most of edge and details, brightness also decline it is larger, then by TurPoint2
The image stream that < Theta < 90 obtain is as the third attributive character image stream.Finally, according to three attribute characteristic images of division
Stream determines 2 ultrasonic wave transmitting deflection angles.
Optionally, described to be specifically included according to preset ultrasonic wave transmitting deflection angle generation launch angle sequence:
B1, predetermined angle difference threshold value.Wherein, preset differential seat angle threshold value is greater than 0 less than 10 °.
B2, deflection angle and preset differential seat angle threshold value are emitted according to preset ultrasonic wave, generates launch angle sequence, it is raw
At the differential seat angle of two neighboring launch angle be less than preset differential seat angle threshold value, preset ultrasonic wave transmitting deflection angle and its phase
The differential seat angle of the launch angle of adjacent generation is less than preset differential seat angle threshold value.Specifically, two preset ultrasonic wave transmittings turn
One or more launch angles would generally be generated between dog-ear, at this point, a preset ultrasonic wave transmitting deflection angle will be with one
The angle of departure is adjacent, also, this preset ultrasonic wave emits the differential seat angle of the launch angle of deflection angle generation adjacent thereto
Less than preset differential seat angle threshold value；Alternatively, adjacent two for generating one or more groups of two adjacent angles of departure, also, generating
The differential seat angle of a angle of departure is less than preset differential seat angle threshold value.
Optionally, described specific according to preset ultrasonic wave transmitting deflection angle generation launch angle sequence when N is equal to 2
Include:
C1, the corresponding launch angle A of the first attributive character image stream is determined0=0 and A1=TurPoint1- Δθ1, 0 <
Δθ1< 4, the TurPoint1 are that the first preset ultrasonic wave emits deflection angle.Wherein, Δθ1First angle offset is represented,
Unit is degree.Optionally, in order to promote fused picture quality, the first described corresponding angle of departure of attributive character image stream
Degree further includes-A1。
C2, the corresponding launch angle A of second of attributive character image stream is determined2=(A1+TurPoint1)/2。
C3, the corresponding launch angle A of the third attributive character image stream is determined3=TurPoint2+ Δθ1, A4=A3+
Δθ2, A5=A4+Δθ2, A6=A5+Δθ2, TurPoint2 is that the second preset ultrasonic wave emits deflection angle, Δθ2Represent second jiao
Spend offset, TurPoint2 > TurPoint1, Δθ2=(ALimit-A3+ 1)/4,0 < ALimit<50.Wherein, Δθ2It can be with Δθ1Phase
Together, it can also be different, it should be noted that ALimitFor ultrasonic wave launch angle upper limit value, i.e. ultrasonic wave transmitting deflection angle maximum
No more than 50 degree.
The A0、A1、A2、A3、A4、A5、A6Cyclic sequence be launch angle sequence.
Step S12 generates the image stream of different attribute feature according to the launch angle sequence.
Specifically, ultrasonic wave, and then the corresponding figure of the different launch angles of generation are emitted according to determining launch angle sequence
Picture.
Step S13 respectively performs corresponding processing described image stream according to the different attribute feature of image stream.
In the step, according to edge, morphological properties or the patient tissue of ultrasonic puncture needle in every attribute characteristic image
Edge, metaplasia degree, corresponding sharpening processing, dividing processing are carried out to image stream.
Wherein, it is described to described image stream carry out processing specifically include:
D1, the image stream that the image stream of different attribute feature is divided into 3 attribute features.It specifically, can as N=2
Mark off the image stream of 3 attribute features；When N is greater than 2, for convenience of calculation, the figure of 3 attribute features can be equally marked off
As stream.
D2, to the first attributive character image stream, corresponding image is obtained according to launch angle, and to the image of acquisition into
Row fusion treatment, so that fused image is apparent.Specifically, it is assumed that the first attributive character image stream has A0、A1Two hairs
Firing angle degree, then with A0、A1Two launch angles obtain two field pictures, it is assumed that the first attributive character image stream has A0、A1、-A13
Launch angle, then with A0、A1、-A13 launch angles obtain 3 frame images, and carry out fusion treatment to the image of acquisition, so as to melt
Image after conjunction is apparent.As only A0、A1When two launch angles, the corresponding two field pictures of the two launch angles are obtained, and
Fusion treatment is carried out to this two field pictures；When there is A0、A1、-A1When 3 launch angles, this corresponding 3 frame of 3 launch angles is obtained
Image, and to A0、A1After the corresponding two field pictures of two launch angles carry out Single cell fusion processing, then Single cell fusion will be passed through
Treated image and-A1The corresponding image of this launch angle carries out secondary fusion treatment, as shown in Figure 3.
D3, to second of attributive character image stream, corresponding image is obtained according to launch angle, and pass through side between maximum kind
Poor method determines the S curve corner position of the image obtained, divides described image according to the S curve corner position, to be suffered from
The organization edge of person, or, obtaining the organization edge of ultrasonic puncture needle and patient.Specifically, it is assumed that second of attributive character image
Stream has 1 launch angle (A2), then with A2Launch angle obtains 1 frame image, and determines described image by maximum variance between clusters
S curve corner position, according to the S curve corner position divide described image, to obtain the organization edge of patient, or, obtaining
Obtain the organization edge of ultrasonic puncture needle and patient.In second of attributive character image stream, the needle body and human body of ultrasonic puncture needle
Highlighted state is all presented in organization edge, and tissue image outline is complete, has no obvious deformation, and in such cases, figure can be used
As partitioning algorithm is partitioned into body sections and other highlighted organization edge parts.Specifically, it is mapped using S curve and increases image pair
Than degree, biggish edge, guide image segmentation then are extracted using certain binaryzation mode.S curve inflection point design then by
Maximum between-cluster variance (OTSU) method determines, optionally, is usually determined by OTSU method twice: first time OTSU segmentation: will be darker
Noise and background are set as 0；Second of OTSU segmentation: it carries out an OTSU again according to the result of previous step, obtains threshold value T.Its
In, OTSU is a kind of image segmentation algorithm based on histogram, can automatically analyze the segmentation threshold point of image, divide the image into two
Part.The normalizing equation of one discrete probability density function is as follows:
Wherein, n is the sum of all pixels in image, nqBe gray level be rqNumber of pixels, L is all possible in image
Number of greyscale levels.Assuming that we have had selected threshold value a k, C now0It is the pixel that one group of gray level is [0,1 .., k-1], C1
It is the pixel that one group of gray level is [k, k+1 .., L-1], OTSU method choice maximizes inter-class varianceThreshold value k, side between class
Difference is defined as:
Wherein,
Piece image is taken, his histogram is calculated, finds maximizationThreshold value k, as the threshold value T of segmentation, according to T value
Two parts can be divided the image into.
Wherein, the function of S curve are as follows:
Wherein, Tur represents curve break, Tur=T, and Img represents normalized image pixel, and it is oblique that a represents curve
Rate, can be according to specific probe imaging contexts setting.It is thin when imaging for example, settable a is smaller when the details of imaging is less
It saves more, then it is larger that a is set.After mapping by S curve, the highlight regions in image are enhanced, at binaryzation
After reason, template is obtained, is not 0 position only in template, the image pixel of second of attributive character just reports, on the contrary then be set as
0.When having needle body in the image of two attribute characteristic image streams, this processing method can obtain the biggish tissue of needle body and part
Edge；When not having needle body, the biggish organization edge in part can be obtained.
D4, described image is calculated separately according to launch angle acquisition corresponding image to the third attributive character image stream
Full figure gradient, obtain the gradient map of described image, according to the gradient map extract ultrasonic puncture needle edge.Specifically, false
If the third attributive character image stream includes A3、A4、A5、A6This 4 launch angles, then with A3、A4、A5、A6Launch angle obtains 4
Frame image calculates separately the full figure gradient of the 4 frame image, obtains the gradient map of the 4 frame image, is mentioned according to the gradient map
Take the edge of ultrasonic puncture needle.
In the image of the third attributive character image stream, since tissue profile is badly deformed, edge blurry, needle body
Edge it is comparatively strong, therefore, in obtaining third after the image of attributive character image stream, calculate according to the following formula first complete
Figure gradient:
Wherein,It indicates to seek the gradient on the direction x.By using the vector modulus value of gradient, gradient map is obtained, then
Reasonable threshold value is set by gradient map binaryzation, retains body sections, removes other parts.As template, only in template
It is not 0 position, the image pixel of the third attributive character image stream just retains, on the contrary then be set as 0.
Step S14, the image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
Wherein, the image stream after the fusion treatment is specifically included with obtaining the enhancing image of ultrasonic puncture needle:
E1, the weight for determining treated different genera characteristic image stream.Specifically, it is assumed that have 3 kinds of different attribute spies
Image stream is levied, then weight is all determined for each frame image of 3 attribute characteristic image streams, for example, if the first attributive character figure
As stream only has a frame I1, second of attributive character image stream only have a frame I2, the third attributive character image stream has 4 frame I31,I32,
I33,I34, then the weight of the image of the first attributive character image stream is maximum, other are successively reduced, such as, it is assumed that I1Weight be
1, then I2Weight can be set to 0.95 etc., the step-length of reduction is not required to too big.
E2, according to determining weight fusion different genera characteristic image stream, to obtain the enhancing image of ultrasonic puncture needle.
It specifically, is piece image output by each frame image co-registration according to the weight of every frame image.In fused image, needle body part
Get enhancing well, and does not introduce obvious noise.Also, transmitting is generated due to emitting deflection angle according to preset ultrasonic wave
Angle sequence allows ultrasonic puncture needle in ALimitIt is freely pierced into angular range, allows larger paracentesis depth.
In first embodiment of the invention, deflection angle is emitted according to preset ultrasonic wave and generates launch angle sequence, it is described pre-
If ultrasonic wave transmitting deflection angle according to the frequency attribute and imaging characteristics of probe be arranged, according to the launch angle sequence generate
The image stream of different attribute feature respectively performs corresponding processing described image stream according to the different attribute feature of image stream,
Image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.Due to preset ultrasonic wave transmitting deflection angle according to
The frequency attribute and imaging characteristics of probe are arranged, it is therefore not necessary to which user intervention can also be such that the launch angle sequence generated more meets
It pops one's head in attribute itself, simplifies operating procedure, and can be obtained according to the image stream that the launch angle sequence generates more crucial
Image stream comprising needle body obtains the enhancing of ultrasonic puncture needle after carrying out denoising, fusion to the image stream comprising needle body
Image, and the enhancing image of ultrasonic puncture needle is apparent, accurate, the ultrasound image for subsequent accurate analysis patient itself is provided with
Power foundation.
It should be understood that in embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to the elder generation of execution sequence
Afterwards, the execution sequence of each process should be determined by its function and internal logic, the implementation process structure without coping with the embodiment of the present invention
At any restriction.
Embodiment two:
Fig. 4 shows a kind of structure chart of the enhancement device of ultrasonic puncture needle image of second embodiment of the invention offer,
For ease of description, only parts related to embodiments of the present invention are shown.
The enhancement device of the ultrasonic puncture needle image includes: launch angle sequence generating unit 41, image stream generation unit
42, image stream processing unit 43, image stream integrated unit 44.Wherein:
Launch angle sequence generating unit 41 generates launch angle sequence for emitting deflection angle according to preset ultrasonic wave
Column, the preset ultrasonic wave transmitting deflection angle are arranged according to the frequency attribute and imaging characteristics of probe.
Optionally, the preset ultrasonic wave transmitting deflection angle is arranged specific according to the frequency attribute and imaging characteristics of probe
Include:
The angular range where ultrasonic wave transmitting deflection angle is determined according to the frequency attribute of probe；It receives and emits the angle
The image that different deflection angles in range return, obtains the information of (N+1) attribute characteristic image stream, and the N is more than or equal to 1；
(N+1) attribute characteristic image stream determines N number of angle based on the received, and N number of angle emits as N number of ultrasonic wave transfers
Angle.
Optionally, the launch angle sequence generating unit 41 includes:
Differential seat angle threshold value preset module is used for predetermined angle difference threshold value.Wherein, preset differential seat angle threshold value is greater than 0 and is less than
10°。
Adjacent transmission differential seat angle determining module, for emitting deflection angle and preset differential seat angle according to preset ultrasonic wave
Threshold value, generates launch angle sequence, and the differential seat angle of the two neighboring launch angle of generation is less than preset differential seat angle threshold value, presets
The differential seat angle of launch angle of ultrasonic wave transmitting deflection angle generation adjacent thereto be less than preset differential seat angle threshold value.
Optionally, when N is equal to 2, the launch angle sequence generating unit includes:
First ultrasonic wave emits deflection angle determining module, for determining the first corresponding angle of departure of attributive character image stream
Spend A0=0 and A1=TurPoint1- Δθ1, 0 < Δθ1< 4, the TurPoint1 are that the first preset ultrasonic wave emits deflection angle.
Wherein, Δθ1First angle offset is represented, unit is degree.Optionally, in order to promote fused picture quality, described first
The corresponding launch angle of attribute characteristic image stream further includes-A1。
Second ultrasonic wave emits deflection angle determining module, for determining the corresponding angle of departure of second of attributive character image stream
Spend A2=(A1+TurPoint1)/2。
Third ultrasonic wave emits deflection angle determining module, for determining the third corresponding angle of departure of attributive character image stream
Spend A3=TurPoint2+ Δθ1, A4=A3+Δθ2, A5=A4+Δθ2, A6=A5+Δθ2, TurPoint2 is the second preset ultrasound
Wave emits deflection angle, Δθ2Represent second angle offset, TurPoint2 > TurPoint1, Δθ2=(ALimit-A3/ 4,0+1) <
ALimit<50.It should be noted that ALimitFor ultrasonic wave launch angle upper limit value, i.e. ultrasonic wave transmitting deflection angle maximum is no more than
50 degree.
The A0、A1、A2、A3、A4、A5、A6Cyclic sequence be launch angle sequence.
Image stream generation unit 42, for generating the image stream of different attribute feature according to the launch angle sequence.
Image stream processing unit 43, it is corresponding for being carried out respectively to described image stream according to the different attribute feature of image stream
Processing.
Specifically, according to the edge of ultrasonic puncture needle in every attribute characteristic image, morphological properties or patient tissue
Edge, metaplasia degree carry out corresponding sharpening processing, dividing processing to image stream.
Optionally, described image stream processing unit 43 includes:
Image stream division module, for the image stream of different attribute feature to be divided into the image stream of 3 attribute features.
The first attributive character image stream processing module, for obtaining corresponding image according to launch angle, and to acquisition
Image carry out fusion treatment so that fused image is apparent.Specifically, it is assumed that the first attributive character image stream has
A0、A1Two launch angles, then with A0、A1Two launch angles obtain two field pictures, it is assumed that the first attributive character image stream has
A0、A1、-A13 launch angles, then with A0、A1、-A13 launch angles obtain 3 frame images, and merge to the image of acquisition
Processing, so that fused image is apparent.As only A0、A1When two launch angles, it is corresponding to obtain the two launch angles
Two field pictures, and fusion treatment is carried out to this two field pictures；When there is A0、A1、-A1When 3 launch angles, this 3 angles of departure are obtained
Corresponding 3 frame image is spent, and to A0、A1After the corresponding two field pictures of two launch angles carry out Single cell fusion processing, then will be through
Cross Single cell fusion treated image and-A1The corresponding image of this launch angle carries out secondary fusion treatment.
Second of attributive character image stream processing module is used for second of attributive character image stream, according to launch angle
Corresponding image is obtained, and determines the S curve corner position of the image obtained by maximum variance between clusters, it is bent according to the S
Line corner position divides described image, to obtain the organization edge of patient, or, obtaining the group selvedge of ultrasonic puncture needle and patient
Edge.Specifically, it is assumed that second of attributive character image stream has 1 launch angle (A2), then with A2Launch angle obtains 1 frame image,
And the S curve corner position of described image is determined by maximum variance between clusters, according to S curve corner position segmentation
Image, to obtain the organization edge of patient, or, obtaining the organization edge of ultrasonic puncture needle and patient.In second of attributive character
In image stream, highlighted state is all presented in the needle body and tissue edge of ultrasonic puncture needle, and tissue image outline is complete,
It has no obvious deformation, in such cases, usable image segmentation algorithm is partitioned into body sections and other highlighted organization edge parts.
The third attributive character image stream processing module is used for the third attributive character image stream, according to launch angle
Corresponding image is obtained, the full figure gradient of described image is calculated separately, obtains the gradient map of described image, according to the gradient map
Extract the edge of ultrasonic puncture needle.Specifically, it is assumed that the third attributive character image stream includes A3、A4、A5、A6This 4 angles of departure
Degree, then with A3、A4、A5、A6Launch angle obtains 4 frame images, calculates separately the full figure gradient of the 4 frame image, obtains described 4
The gradient map of frame image extracts the edge of ultrasonic puncture needle according to the gradient map.In the figure of the third attributive character image stream
As in, since tissue profile is badly deformed, the edge of edge blurry, needle body is comparatively strong, therefore, is obtaining third
After the image of middle attributive character image stream, full figure gradient is calculated according to the following formula first, by using the vector modulus value of gradient, obtain
Gradient map, then reasonable threshold value is set by gradient map binaryzation, retain body sections, removes other parts.
Image stream integrated unit 44, for the image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
Optionally, described image stream integrated unit 44 includes:
Weight determination module, for determining the weight of treated different genera characteristic image stream.For example, if the first
Attributive character image stream only has a frame I1, second of attributive character image stream only have a frame I2, the third attributive character image stream has
4 frame I31,I32,I33,I34, then the weight of the image of the first attributive character image stream is maximum, other are successively reduced, such as, it is assumed that
I1Weight be 1, then I2Weight can be set to 0.95 etc., the step-length of reduction is not required to too big.
The enhancing image collection module of ultrasonic puncture needle, for according to determining weight fusion different genera characteristic image
Stream, to obtain the enhancing image of ultrasonic puncture needle.It specifically, is a width by each frame image co-registration according to the weight of every frame image
Image output.In fused image, body sections are enhanced well, and do not introduce obvious noise.Also, due to basis
Preset ultrasonic wave transmitting deflection angle generates launch angle sequence, allows ultrasonic puncture needle in ALimitIt is freely pierced in angular range
Enter, allows larger paracentesis depth.
Frequency attribute and imaging in second embodiment of the invention, due to preset ultrasonic wave transmitting deflection angle according to probe
Feature setting simplifies behaviour it is therefore not necessary to which user intervention can also make the launch angle sequence generated more meet the attribute of probe itself
Make step, and the more crucial image stream comprising needle body can be obtained according to the image stream that the launch angle sequence generates, right
After image stream comprising needle body carries out denoising, fusion, the enhancing image of ultrasonic puncture needle is obtained, and the increasing of ultrasonic puncture needle
Strong image is apparent, accurate, and the ultrasound image for subsequent accurate analysis patient itself provides strong foundation.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of Enhancement Method of ultrasonic puncture needle image, which is characterized in that the described method includes:
Emit deflection angle according to preset ultrasonic wave and generate launch angle sequence, the preset ultrasonic wave transmitting deflection angle according to
The frequency attribute and imaging characteristics of probe are arranged；
The image stream of different attribute feature is generated according to the launch angle sequence；
Described image stream is performed corresponding processing respectively according to the different attribute feature of image stream, wherein
To the first attributive character image stream, corresponding image is obtained according to launch angle, and merge to the image of acquisition
Processing, so that fused image is apparent；
To second of attributive character image stream, corresponding image is obtained according to launch angle, and true by maximum variance between clusters
Surely the S curve corner position of the image obtained divides described image according to the S curve corner position, to obtain the group of patient
Selvedge edge, or, obtaining the organization edge of ultrasonic puncture needle and patient；
To the third attributive character image stream, corresponding image is obtained according to launch angle, calculates separately the full figure of described image
Gradient obtains the gradient map of described image, and the edge of ultrasonic puncture needle is extracted according to the gradient map；
Image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
2. the method according to claim 1, wherein described emit deflection angle generation hair according to preset ultrasonic wave
Firing angle degree series specifically include:
Predetermined angle difference threshold value；
Emit deflection angle and preset differential seat angle threshold value according to preset ultrasonic wave, generates launch angle sequence, the phase of generation
The differential seat angle of adjacent two launch angles is less than preset differential seat angle threshold value, the life adjacent thereto of preset ultrasonic wave transmitting deflection angle
At launch angle differential seat angle be less than preset differential seat angle threshold value.
3. being equal to 2 in N the method according to claim 1, wherein N is the number that ultrasonic wave emits deflection angle
When, it is described to be specifically included according to preset ultrasonic wave transmitting deflection angle generation launch angle sequence:
Determine the corresponding launch angle A of the first attributive character image stream0=0 and A1=TurPoint1- Δθ1, 0 < Δθ1< 4, institute
Stating TurPoint1 is that the first preset ultrasonic wave emits deflection angle, Δθ1Represent first angle offset；
Determine the corresponding launch angle A of second of attributive character image stream2=(A1+TurPoint1)/2；
Determine the corresponding launch angle A of the third attributive character image stream3=TurPoint2+ Δθ1, A4=A3+Δθ2, A5=A4+
Δθ2, A6=A5+Δθ2, TurPoint2 is that the second preset ultrasonic wave emits deflection angle, Δθ2Second angle offset is represented,
TurPoint2 > TurPoint1, Δθ2=(ALimit-A3+ 1)/4,0 < ALimit<50；
The A0、A1、A2、A3、A4、A5、A6Cyclic sequence be launch angle sequence, ALimitFor the ultrasonic wave launch angle upper limit
Value.
4. according to the method described in claim 3, it is characterized in that, the first described corresponding angle of departure of attributive character image stream
Degree further includes-A1。
5. a kind of enhancement device of ultrasonic puncture needle image, which is characterized in that described device includes:
Launch angle sequence generating unit generates launch angle sequence for emitting deflection angle according to preset ultrasonic wave, described
Preset ultrasonic wave transmitting deflection angle is arranged according to the frequency attribute and imaging characteristics of probe；
Image stream generation unit, for generating the image stream of different attribute feature according to the launch angle sequence；
Image stream processing unit, for being located accordingly to described image stream respectively according to the different attribute feature of image stream
Reason；
Wherein, described image stream processing unit includes:
The first attributive character image stream processing module, for obtaining corresponding image according to launch angle, and to the figure of acquisition
As carrying out fusion treatment, so that fused image is apparent；
Second of attributive character image stream processing module, for being obtained according to launch angle to second of attributive character image stream
Corresponding image, and by the S curve corner position of the determining image obtained of maximum variance between clusters, it is turned according to the S curve
Described image is divided in point position, to obtain the organization edge of patient, or, obtaining the organization edge of ultrasonic puncture needle and patient；
The third attributive character image stream processing module, for being obtained according to launch angle to the third attributive character image stream
Corresponding image calculates separately the full figure gradient of described image, obtains the gradient map of described image, is extracted according to the gradient map
The edge of ultrasonic puncture needle；
Image stream integrated unit, for the image stream after fusion treatment, to obtain the enhancing image of ultrasonic puncture needle.
6. device according to claim 5, which is characterized in that the launch angle sequence generating unit includes:
Differential seat angle threshold value preset module is used for predetermined angle difference threshold value；
Adjacent transmission differential seat angle determining module, for emitting deflection angle and preset differential seat angle threshold according to preset ultrasonic wave
Value generates launch angle sequence, and the differential seat angle of the two neighboring launch angle of generation is less than preset differential seat angle threshold value, preset
The differential seat angle that ultrasonic wave emits the launch angle of deflection angle generation adjacent thereto is less than preset differential seat angle threshold value.
7. device according to claim 5, which is characterized in that N is the number that ultrasonic wave emits deflection angle, is equal to 2 in N
When, the launch angle sequence generating unit includes:
First ultrasonic wave emits deflection angle determining module, for determining the corresponding launch angle A of the first attributive character image stream0
=0 and A1=TurPoint1- Δθ1, 0 < Δθ1< 4, the TurPoint1 are that the first preset ultrasonic wave emits deflection angle, Δθ1
Represent first angle offset；
Second ultrasonic wave emits deflection angle determining module, for determining the corresponding launch angle A of second of attributive character image stream2
=(A1+TurPoint1)/2；
Third ultrasonic wave emits deflection angle determining module, for determining the corresponding launch angle A of the third attributive character image stream3
=TurPoint2+ Δθ1, A4=A3+Δθ2, A5=A4+Δθ2, A6=A5+Δθ2, TurPoint2 is the second preset ultrasonic wave hair
Penetrate deflection angle, Δθ2Represent second angle offset, TurPoint2 > TurPoint1, Δθ2=(ALimit-A3/ 4,0+1) <
ALimit<50；
The A0、A1、A2、A3、A4、A5、A6Cyclic sequence be launch angle sequence, ALimitFor the ultrasonic wave launch angle upper limit
Value.
8. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as Claims 1-4 of realization the method.
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| CN109069100B (en) | 2016-11-09 | 2022-10-21 | 深圳市理邦精密仪器股份有限公司 | Ultrasound imaging system and method thereof |
| CN109330669A (en) * | 2018-09-27 | 2019-02-15 | 迟惠清 | A kind of ultrasound guided puncture image processing system and method based on virtual reality |
| CN109431584B (en) * | 2018-11-27 | 2020-09-01 | 深圳蓝韵医学影像有限公司 | Method and system for ultrasonic imaging |
| CN109949254B (en) * | 2019-03-19 | 2021-03-19 | 青岛海信医疗设备股份有限公司 | Puncture needle ultrasonic image enhancement method and device |
| CN111513823B (en) * | 2020-04-30 | 2023-06-23 | 成都思多科医疗科技有限公司 | Puncture needle positioning system based on multitasking neural network and deflection scanning |
| CN111476790A (en) * | 2020-05-14 | 2020-07-31 | 武汉中旗生物医疗电子有限公司 | Method and device for enhancing display of puncture needle in ultrasonic puncture |
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