CN109431543A - Sound wave condenser lens, supersonic imaging device and method - Google Patents
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- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 claims description 4
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
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- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
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Abstract
It is simple that the embodiment of the present application discloses a kind of sound wave condenser lens, supersonic imaging device and method, sound wave focusing lens structure, comprising: multiple concentric annulus, two neighboring annulus constitute a slit；Wherein, annulus is made of rigid material, the thickness of each annulus is identical, slit in sound wave condenser lens successively narrows from inside to outside, the structure is easy to process, cheap, cooperates with plane ultrasonic transducer, the imaging of different depth object can be realized in using flexible, the frequency that sound wave is emitted by changing ultrasonic transducer.
Description
Technical field
This application involves ultrasonic imaging technique fields, fill more specifically to a kind of sound wave condenser lens, ultrasonic imaging
It sets and method.
Background technique
Ultrasonic imaging is always the research hotspot of medical domain in recent years, it mainly scans human body using ultrasonic acoustic beam,
By reception, the processing to reflection signal, to obtain the image of intracorporeal organ.
Supersonic imaging device is formed by single vibration source ultrasonic focusing energy transducer or arrayed ultrasonic focused transducer mostly
Focus ultrasonic sound field, to realize imaging effect.
However, current supersonic imaging device is only able to achieve the ultrasonic sound field of the single depth of focus, if desired changes and focus
Depth then needs replacing supersonic imaging device, makes troubles to user.
Summary of the invention
The purpose of the application is to provide a kind of sound wave condenser lens, supersonic imaging device and method, at least part of gram
Take the technical problems existing in the prior art.
To achieve the above object, this application provides following technical solutions:
A kind of sound wave condenser lens, comprising:
Multiple concentric annulus, two neighboring annulus constitute a slit；
Wherein, the annulus is made of rigid material, and the thickness of each annulus is identical, the slit in the sound wave condenser lens
Successively narrow from inside to outside.
Above-mentioned sound wave condenser lens, it is preferred that the width of the width of the annulus and the slit is according to Fresel diffraction
Formula determines.
Above-mentioned sound wave condenser lens, it is preferred that the width of the width of the annulus and the slit is true by following formula
It is fixed:
di(i=1)=r1,
di(i > 1)=ri-rj,
Wherein, rnIndicate the radius of n-th of Fresnel region；λ=c/f indicates the sound wave of plane ultrasonic transducer transmitting
Wavelength, c indicate the velocity of sound, and f indicates the centre frequency of the sound wave of plane ultrasonic transducer transmitting；F indicates default focal length；di(i=1)
Indicate the radius of center hole；di(i > 1) indicate annulus or in addition to center hole other slits width；riIt indicates comprising the
The radius of the minimum Fresnel region of i annulus or slit, rjIt indicates in the minimum Fresnel region, is less than described minimum luxuriant and rich with fragrance
The radius of the maximum Fresnel region of alunite lug areas.
Above-mentioned sound wave condenser lens, it is preferred that the thickness of the annulus is greater than in plane ultrasonic transducer transmitting sound wave
Twice of the corresponding wavelength of frequency of heart.
A kind of supersonic imaging device, comprising:
Plane ultrasonic transducer；
In front of the plane ultrasonic transducer, the sound wave for emitting the plane ultrasonic transducer is focused
Sound wave condenser lens；The sound wave condenser lens includes: multiple concentric annulus, and two neighboring annulus constitutes a slit；
Wherein, the annulus is made of rigid material, and the thickness of each annulus is identical, and the slit in the sound wave condenser lens is from inside to outside
Successively narrow；
The controller being connect with the plane ultrasonic transducer, for adjusting the transmitting sound wave of the plane ultrasonic transducer
Frequency, to change the depth of focus of the sound wave condenser lens.
Above-mentioned supersonic imaging device, it is preferred that the width of the width of the annulus and the slit is according to Fresel diffraction
Formula determines.
Above-mentioned supersonic imaging device, it is preferred that the width of the width of the annulus and the slit is true by following formula
It is fixed:
di(i=1)=r1,
di(i > 1)=ri-rj,
Wherein, rnIndicate the radius of n-th of Fresnel region；λ=c/f indicates the sound wave of plane ultrasonic transducer transmitting
Wavelength, c indicate the velocity of sound, and f indicates the centre frequency of the sound wave of plane ultrasonic transducer transmitting；F indicates default focal length；di(i=1)
Indicate the radius of center hole；di(i > 1) indicate annulus or in addition to center hole other slits width；riIt indicates comprising the
The radius of the minimum Fresnel region of i annulus or slit, rjIt indicates in the minimum Fresnel region, is less than described minimum luxuriant and rich with fragrance
The radius of the maximum Fresnel region of alunite lug areas.
Above-mentioned supersonic imaging device, it is preferred that the thickness of the annulus is greater than in plane ultrasonic transducer transmitting sound wave
Twice of the corresponding wavelength of frequency of heart.
A kind of ultrasonic imaging method is applied to supersonic imaging device, and the supersonic imaging device includes: plane ultrasonic transducing
Device；In front of the plane ultrasonic transducer, the sound that the sound wave for emitting the plane ultrasonic transducer is focused
Wave condenser lens；The sound wave condenser lens includes: multiple concentric annulus, and two neighboring annulus constitutes a slit；Wherein,
The annulus is made of rigid material, and the thickness of each annulus is identical, and the slit in the sound wave condenser lens is from inside to outside successively
Narrow；The described method includes:
Obtain target frequency；
The sound wave that the plane ultrasonic transducer transmitting has the target frequency is controlled, so that the sound wave condenser lens
The depth of focus it is corresponding with the target frequency, to obtain the image of the depth of focus position.
By above scheme it is found that a kind of sound wave condenser lens, supersonic imaging device and method provided by the present application, sound wave
Focusing lens structure is simple, easy to process, cheap, cooperates with plane ultrasonic transducer, using flexible, by changing ultrasound
The imaging of different depth object can be realized in the frequency of energy converter transmitting sound wave.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of sound wave condenser lens provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of supersonic imaging device provided by the embodiments of the present application.
Specification and claims and term " first " in above-mentioned attached drawing, " second ", " third " " the 4th " etc. (if
In the presence of) it is part for distinguishing similar, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that embodiments herein described herein can be in addition to illustrating herein
Sequence in addition is implemented.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of sound wave condenser lens provided by the present application.
Sound wave condenser lens provided by the present application is made of multiple concentric loops 11, and two neighboring concentric loop constitutes one
Slit 12, since annulus is concentric, constituted slit is also ring-shaped.Wherein, the circular hole at center can be considered as one it is special
Slit.
Each annulus is made of rigid material, and the thickness of each annulus is identical, the slit in the sound wave condenser lens by
In successively narrow outward.
Optionally, annulus can be silicon rounding ring, alternatively, can be metal ring, such as aluminum annulus, alternatively, steel
Annulus etc..
Optionally since sound wave condenser lens is used cooperatively with plane ultrasonic transducer, can be changed according to plane ultrasonic
Can the frequency of sound wave of device transmitting determine the material of annulus.For example, if the center frequency of the sound wave of plane ultrasonic transducer transmitting
Rate is relatively high (such as 10MHz or more), and since the volume of plane ultrasonic transducer is smaller, corresponding annulus can choose silicon wafer etc.
The material of easy processing micro-structure makes annulus, if the centre frequency of the sound wave of plane ultrasonic transducer transmitting is relatively low (such as small
In 10MHz), since the volume of plane ultrasonic transducer is bigger, metal material may be selected at this time and make annulus, certainly, at this time
Also it can choose silicon wafer to manufacture annulus.
It can be connected by support construction 13 between annulus, so that multiple concentric loops constitute an entirety.
In an optional embodiment, the width of annulus 11 and the width of slit 12 are determined according to means of Fresnel diffraction
's.As shown in Figure 1:
Slit a (i.e. the circular hole at sound wave condenser lens center) constitutes a Fresnel region；
Slit a and annulus b constitutes a Fresnel region；
Slit a, annulus b and slit c constitute a Fresnel region；
Slit a, annulus b, slit c and annulus d constitute a Fresnel region；
Slit a, annulus b, slit c, annulus d and slit e constitute a Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e and annulus f constitute a Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e, annulus f and slit g constitute a Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e, annulus f, slit g and annulus h constitute a Fresnel region.
For convenient for narration, Fresnel region is 1,2,3 according to the ascending number consecutively of radius by the application ... ..., N.
Then in example shown in Fig. 1,
Slit a constitutes the 1st Fresnel region；
Slit a and annulus b constitutes the 2nd Fresnel region；
Slit a, annulus b and slit c constitute the 3rd Fresnel region；
Slit a, annulus b, slit c and annulus d constitute the 4th Fresnel region；
Slit a, annulus b, slit c, annulus d and slit e constitute the 5th Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e and annulus f constitute the 6th Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e, annulus f and slit g constitute the 7th Fresnel region；
Slit a, annulus b, slit c, annulus d, slit e, annulus f, slit g and annulus h constitute the 8th Fresnel region.
Specifically, the width of annulus 11 and the width of slit 12 are determining according to the following formula:
di(i=1)=r1,
di(i > 1)=ri-rj,
Wherein, rnIndicate the radius of n-th (n=1,2,3 ... ..., N) a Fresnel region；λ=c/f indicates plane ultrasonic
The wavelength of the sound wave of energy converter transmitting, c indicate the velocity of sound, and f indicates the centre frequency of the sound wave of plane ultrasonic transducer transmitting；F table
Show default focal length；di(i=1) radius of center hole is indicated；di(i > 1) indicates annulus or other slits in addition to center hole
Width；riIndicate the radius of the minimum Fresnel region comprising i-th of annulus or slit, rjIndicate above-mentioned minimum Fresnel region
In domain, less than the radius of the maximum Fresnel region of above-mentioned minimum Fresnel region.Plane ultrasonic transducer mentioned herein
Refer to the plane ultrasonic transducer that needs and sound wave condenser lens are used cooperatively.
For example, the width of annulus b is that the radius of the 2nd Fresnel region subtracts the radius of the 1st Fresnel region.
The width of slit c is that the radius of the 3rd Fresnel region subtracts the radius of the 2nd Fresnel region.
The width of annulus d is that the radius of the 4th Fresnel region subtracts the radius of the 3rd Fresnel region.
The width of slit e is that the radius of the 5th Fresnel region subtracts the radius of the 4th Fresnel region.
The width of annulus f is that the radius of the 6th Fresnel region subtracts the radius of the 5th Fresnel region.
The width of slit g is that the radius of the 7th Fresnel region subtracts the radius of the 6th Fresnel region.
The width of annulus h is that the radius of the 8th Fresnel region subtracts the radius of the 7th Fresnel region.
The width for the annulus 11 being calculated by the above method and the width of slit 12, so that sound wave condenser lens can be with
Realize the focused beam with accurate focal length, it can also (the larger frequency range be changed greater than plane ultrasonic in larger frequency range
Can device itself operating frequency range) in adjust frequency, to adjust focal length and focal spot longitudinal width accordingly.Wherein, when flat
When the frequency of the sound wave of face ultrasonic transducer transmitting is center frequency, the focal length of sound wave condenser lens is exactly F, when plane ultrasonic changes
When the frequency shift of the sound wave of energy device transmitting, the focal length of sound wave condenser lens is also just changed correspondingly.
In an optional embodiment, the thickness of annulus is greater than twice of wave length of sound.The wave length of sound refers to that plane is super
The corresponding wavelength of centre frequency of sonic transducer transmitting sound wave.That is, the plane ultrasonic transducing of cooperation different center frequency
The thickness of device, sound wave condenser lens is different.With this configuration, it is possible to reduce the influence that solid material resonates to sound field reduces burnt
Occurs the probability of secondary lobe phenomenon around point.
Based on above-mentioned sound wave condenser lens, the application also provides a kind of supersonic imaging device, and the one of the supersonic imaging device
Kind structural schematic diagram is as shown in Fig. 2, may include:
Plane ultrasonic transducer 21, sound wave condenser lens 22 and controller 23；Wherein,
Sound wave condenser lens 22 is located at 21 front of plane ultrasonic transducer, that is, is located at plane ultrasonic transducer 21 and emits sound wave
Direction on, the sound wave for emitting plane ultrasonic transducer 21 is focused；Wherein, the structure of sound wave condenser lens 22 is such as
Preceding described, which is not described herein again.
Controller 23 is electrically connected with plane ultrasonic transducer 21, for adjusting the transmitting sound wave of plane ultrasonic transducer 21
Frequency, to change the depth of focus of sound wave condenser lens 22.
In the application, the frequency for the sound wave that plane ultrasonic transducer 21 emits is different, and sound wave condenser lens 22 is super to plane
The depth of the focusing for the sound wave that sonic transducer 21 emits is different, so as to the sound emitted by changing plane ultrasonic transducer 21
The frequency of wave regulates and controls the depth of focus, realizes the different depth region progress to act on object (human or animal with disease)
Imaging.
Optionally, plane ultrasonic transducer 21 can be single vibration source ultrasonic focusing energy transducer, be also possible to arrayed ultrasonic
Focused transducer.
The application also provides a kind of ultrasonic imaging method applied to above-mentioned supersonic imaging device, which can
To include:
Obtain target frequency.The target frequency is provided in interactive interface in supersonic imaging device by user and is selected or input.
The sound wave that plane ultrasonic transducer transmitting has above-mentioned target frequency is controlled, so that the focusing of sound wave condenser lens is deep
Degree is corresponding with target frequency, to obtain the image of above-mentioned depth of focus position.
It passes through by sound wave condenser lens after being reflected by the focused beam that sound wave condenser lens obtains by object under test by plane
Ultrasonic transducer receives, to realize ultrasonic imaging.
Sound wave condenser lens provided by the present application, structure is simple, easy to process, cheap, with plane ultrasonic transducer
The imaging of different depth object can be realized in cooperation, using flexible, the frequency that sound wave is emitted by changing ultrasonic transducer.
It should be noted that sound wave condenser lens provided by the present application, other than the focusing that can be used for high frequency sound wave,
It can be used for the focusing of the sound wave of other frequencies, for example, can be used for the focusing of low-frequency sound wave, it can with transmitting low-frequency sound wave
Ultrasonic transducer be used cooperatively, again may be by change ultrasonic transducer transmitting sound wave frequency different depth can be realized
The imaging of object.
In addition, sound wave condenser lens provided by the present application can be applicable to it other than it can be applied to ultrasonic imaging
The relevant application of its supersonic sounding, for example, ultrasonic therapy, ultrasonic surgery etc..
In the application, the use environment of supersonic imaging device can be water (such as couplant), be also possible to air.
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.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can
To be the indirect coupling or communication connection of device or unit through some interfaces, it 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 should be appreciated that can be combined with each other combination in the embodiment of the present application from power, each embodiment, feature, can realize
Solve aforementioned technical problem.
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 foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of sound wave condenser lens characterized by comprising
Multiple concentric annulus, two neighboring annulus constitute a slit；
Wherein, the annulus is made of rigid material, and the thickness of each annulus is identical, and the slit in the sound wave condenser lens is by inner
Successively narrow outward.
2. sound wave condenser lens according to claim 1, which is characterized in that the width of the width of the annulus and the slit
Degree is determined according to means of Fresnel diffraction.
3. sound wave condenser lens according to claim 2, which is characterized in that the width of the width of the annulus and the slit
Degree is determined by following formula:
di(i=1)=r1,
di(i > 1)=ri-rj,
Wherein, rnIndicate the radius of n-th of Fresnel region；λ=c/f indicates the wavelength of the sound wave of plane ultrasonic transducer transmitting,
C indicates the velocity of sound, and f indicates the centre frequency of the sound wave of plane ultrasonic transducer transmitting；F indicates default focal length；di(i=1) it indicates
The radius of center hole；di(i > 1) indicate annulus or in addition to center hole other slits width；riIndicate to include i-th
The radius of the minimum Fresnel region of annulus or slit, rjIt indicates in the minimum Fresnel region, is less than the minimum luxuriant and rich with fragrance alunite
The radius of the maximum Fresnel region of lug areas.
4. sound wave condenser lens according to claim 1, which is characterized in that the thickness of the annulus is changed greater than plane ultrasonic
Twice of the corresponding wavelength of centre frequency of energy device transmitting sound wave.
5. a kind of supersonic imaging device characterized by comprising
Plane ultrasonic transducer；
In front of the plane ultrasonic transducer, the sound that the sound wave for emitting the plane ultrasonic transducer is focused
Wave condenser lens；The sound wave condenser lens includes: multiple concentric annulus, and two neighboring annulus constitutes a slit；Wherein,
The annulus is made of rigid material, and the thickness of each annulus is identical, and the slit in the sound wave condenser lens is from inside to outside successively
Narrow；
The controller being connect with the plane ultrasonic transducer, the frequency of the transmitting sound wave for adjusting the plane ultrasonic transducer
Rate, to change the depth of focus of the sound wave condenser lens.
6. supersonic imaging device according to claim 5, which is characterized in that the width of the width of the annulus and the slit
Degree is determined according to means of Fresnel diffraction.
7. supersonic imaging device according to claim 6, which is characterized in that the width of the width of the annulus and the slit
Degree is determined by following formula:
di(i=1)=r1,
di(i > 1)=ri-rj,
Wherein, rnIndicate the radius of n-th of Fresnel region；λ=c/f indicates the wavelength of the sound wave of plane ultrasonic transducer transmitting,
C indicates the velocity of sound, and f indicates the centre frequency of the sound wave of plane ultrasonic transducer transmitting；F indicates default focal length；di(i=1) it indicates
The radius of center hole；di(i > 1) indicate annulus or in addition to center hole other slits width；riIndicate to include i-th
The radius of the minimum Fresnel region of annulus or slit, rjIt indicates in the minimum Fresnel region, is less than the minimum luxuriant and rich with fragrance alunite
The radius of the maximum Fresnel region of lug areas.
8. supersonic imaging device according to claim 5, which is characterized in that the thickness of the annulus is changed greater than plane ultrasonic
Twice of the corresponding wavelength of centre frequency of energy device transmitting sound wave.
9. a kind of ultrasonic imaging method is applied to supersonic imaging device, which is characterized in that the supersonic imaging device includes: flat
Face ultrasonic transducer；In front of the plane ultrasonic transducer, sound wave for emitting the plane ultrasonic transducer into
The sound wave condenser lens of line focusing；The sound wave condenser lens includes: multiple concentric annulus, and two neighboring annulus constitutes one
Slit；Wherein, the annulus is made of rigid material, and the thickness of each annulus is identical, the slit in the sound wave condenser lens by
In successively narrow outward；The described method includes:
Obtain target frequency；
The sound wave that the plane ultrasonic transducer transmitting has the target frequency is controlled, so that the sound wave condenser lens is poly-
Depth of focus degree is corresponding with the target frequency, to obtain the image of the depth of focus position.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110478632A (en) * | 2019-08-30 | 2019-11-22 | 深圳先进技术研究院 | Ultrasonic acupuncture device |
| CN110584713A (en) * | 2019-09-29 | 2019-12-20 | 深圳先进技术研究院 | Super-resolution ultrasonic microscope |
| CN110721066A (en) * | 2019-09-05 | 2020-01-24 | 深圳先进技术研究院 | Ultrasonic pedicure device |
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