CN102266235B - Ultrasonograph, ultrasonic probe, and ultrasonic wave transmitting/receiving program - Google Patents
Ultrasonograph, ultrasonic probe, and ultrasonic wave transmitting/receiving program Download PDFInfo
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- CN102266235B CN102266235B CN201110148813.1A CN201110148813A CN102266235B CN 102266235 B CN102266235 B CN 102266235B CN 201110148813 A CN201110148813 A CN 201110148813A CN 102266235 B CN102266235 B CN 102266235B
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Abstract
An ultrasound device including a main processing unit, a probe part, an array, and an apodization unit that receives an ultrasound signal from the array, the signal having multiple channels, that determines a weight for each channel based on an apodization profile being one of ring-centered and edge-centered, and that multiplies the received ultrasound signal by the determined weight for each channel. The array includes a first area including a first plurality of elements having a first functionality, a second area including a second plurality of elements having a second functionality, and a third area including a third plurality of elements having a third functionality different from the first functionality. The second area further includes a fourth area having a number of elements that are switchable between the second and third types of functionality. The array also includes a dynamic spot including the third and fourth areas.
Description
(cross reference of related application)
The U.S. Patent application NO.12/794 formerly of the application based on submitting on April 6th, 2010,486 (corresponding to Japanese patent application 2011-106478) to require it be priority, its full content is by reference in conjunction with in this application.
Technical field
The present invention relates to a kind of diagnostic ultrasound equipment, ultrasound probe and ultrasound wave transmitting/receiving program.
Background technology
In the past, two-dimensional ultrasonic vibrating elements was formed and uses a plurality of vibrating elementss to send reception simultaneously.Two-dimensional ultrasonic vibrating elements for example moves as array oscillator simultaneously.When using a plurality of vibrating elements, essential fee of material and consumption electric power become large.U.S.Pat.No.6,783,497 (following descriptions as file 1) are for only having used the thinned array of the part that array oscillator is fully intensive to describe.Thinned array has plural independently region in order to send reception.But in file 1, because array oscillator is of a size of static state and has circular open, therefore, the thinned array of describing in file 1 does not have sufficient response.
(formerly technological document)
(patent document)
(patent document 1) United States Patent (USP) the 6th, 783,497B2 description
Summary of the invention
(problem that invention will solve)
The object of the present invention is to provide the diagnostic ultrasound equipment, ultrasound probe and the ultrasound wave transmitting/receiving program that by receiving according to hyperacoustic transmission, use Ah loudspeaker's dagger-axe hot spot to improve picture quality.
(method of dealing with problems)
The diagnostic ultrasound equipment that present embodiment relates to, it is characterized in that, comprise: ultrasound probe, a plurality of the 2nd oscillators of two-dimensional arrangements in the 2nd region of a plurality of the 1st oscillators with two-dimensional arrangements within comprising the 1st region of open centre and surrounding in above-mentioned the 1st region; Sending part, supplies with driving signal to above-mentioned the 1st oscillator and the 2nd oscillator; Acceptance division, according to by above-mentioned the 1st oscillator with and the echo-signal that produces of 2 oscillators, produce and receive signal; Transmission reception control part, execution is used for the control of an above-mentioned sending part to above-mentioned the 2nd oscillator supply driving signal and at least one control by the control of the above-mentioned acceptance division of the echo-signal generation reception signal of above-mentioned the 2nd oscillator generation for a use.
(effect of invention)
Can be by receiving and improve picture quality with Ah loudspeaker's dagger-axe hot spot according to hyperacoustic transmission.
Accompanying drawing explanation
Figure 1A receives reserved area for expression elliptical openings relevant to present embodiment, that have circular spot portion has, sends the figure of the ultrasonic array oscillator of receiving area and transmission reserved area.
Figure 1B is that expression elliptical openings relevant to present embodiment, that have circular spot portion has the figure that receives reserved area, transmission receiving area and receive the ultrasonic array oscillator of special-purpose speckle regions.
Fig. 1 C receives reserved area, sends receiving area and the figure of the ultrasonic array oscillator of out of use speckle regions in transmission reception for representing that elliptical openings relevant to present embodiment, that have circular spot portion has.
Fig. 2 A is that expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the figure that receives reserved area, transmission receiving area and send the ultrasonic array oscillator of special-purpose speckle regions.
Fig. 2 B is that expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the figure that receives reserved area, transmission receiving area and receive the ultrasonic array oscillator of special-purpose speckle regions.
Fig. 2 C is that expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the figure that receives reserved area, sends the ultrasonic array oscillator of receiving area and out of use speckle regions.
Fig. 3 A is for representing to have to dynamic speckle elliptical openings relevant, that the have dynamic speckle portion of present embodiment the figure that receives reserved area, sends the ultrasonic array oscillator in the 4th region between receiving area and out of use speckle regions, out of use speckle regions and transmission receiving area.
Fig. 3 B to be relevant to present embodiment for representing, have when sending elliptical openings portion with the dynamic speckle varying in size when receiving have receive reserved area, send receiving area and out of use speckle regions, between out of use region and transmission receiving area and can switch the figure of ultrasonic array oscillator in the 4th region of out of use state and transmission accepting state.
Fig. 3 C for relevant to present embodiment, using when sending with the curve chart that varies in size and represent as the big or small variation of the dynamic speckle of the process along with the time of dynamic speckle when the reception.
Fig. 4 A for relevant to present embodiment, using when sending with dynamic speckle when the reception vary in size and receive in the size of speckle dynamically change the curve chart representing as the big or small variation of the dynamic speckle of the process along with the time.
Fig. 4 B for relevant to present embodiment, using when sending with the varying in size and the size variation of dynamic speckle represents as the big or small variation of the dynamic speckle of the process along with the time in each switching that sends the wave beam between reception curve chart of dynamic speckle when receiving.
Fig. 5 A sends receiving area, the 2nd figure that sends receiving area and send the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have circular spot portion has the 1st.
Fig. 5 B sends receiving area, the 2nd figure that sends receiving area and receive the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have circular spot portion has the 1st.
Fig. 5 C sends for expression elliptical openings relevant to present embodiment, that have circular spot portion has the 1st the figure that receiving area, the 2nd sends the ultrasonic array oscillator of receiving area and out of use speckle regions.
Fig. 6 A sends receiving area, the 2nd transmission receiving area and the oval figure that sends the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the 1st.
Fig. 6 B sends receiving area, the 2nd transmission receiving area and the oval figure that receives the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the 1st.
Fig. 6 C sends for expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the 1st the figure that receiving area, the 2nd sends the ultrasonic array oscillator of receiving area and oval-shaped out of use speckle regions.
Fig. 7 is that expression elliptical openings relevant to present embodiment, that have dynamic speckle portion has the figure that the 1st transmission receiving area, the 2nd sends receiving area and out of use speckle regions, sends the ultrasonic array oscillator in the 4th region of reciprocally change of state between receiving area and between out of use state and the state of transmission reception in out of use speckle regions and the 2nd.
Fig. 8 is relevant with present embodiment for representing, have when sending elliptical openings portion with dynamic speckle sizes different when receiving has the 1st and sends that receiving area, the 2nd sends receiving area and out of use speckle regions, the figure of the ultrasonic array oscillator in the 4th region of reciprocally change of state between out of use speckle regions and the 2nd transmission receiving area and between out of use state and the state of transmission reception.
The figure that Fig. 9 A has transmission reserved area, sends receiving area and send the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have circular spot portion.
Fig. 9 B sends reserved area for expression elliptical openings relevant to present embodiment, that have circular spot portion has, sends the figure of the ultrasonic array oscillator of receiving area and reception reserved area.
Fig. 9 C is that expression elliptical openings relevant to present embodiment, that have circular spot portion has the figure that sends reserved area, sends the ultrasonic array oscillator of receiving area and out of use speckle regions.
The figure that Figure 10 A has transmission reserved area, sends receiving area and send the ultrasonic array oscillator of special-purpose speckle regions for expression elliptical openings relevant to present embodiment, that have elliptical spot portion.
Figure 10 B sends reserved area for expression elliptical openings relevant to present embodiment, that have elliptical spot portion has, sends the figure of the ultrasonic array oscillator of receiving area and reception reserved area.
Figure 10 C is that expression elliptical openings relevant to present embodiment, that have elliptical spot portion has the figure that sends reserved area, sends the ultrasonic array oscillator of receiving area and out of use speckle regions.
Figure 11 A for represent elliptical openings relevant to present embodiment, that there is dynamic speckle portion have send reserved area, send receiving area and out of use speckle regions, at the figure of the ultrasonic array oscillator in the 4th region of reciprocally change of state between out of use speckle regions and transmission receiving area and between out of use state and transmission accepting state.
Figure 11 B to be relevant to present embodiment for representing, have when sending elliptical openings portion with the dynamic speckle varying in size when receiving have send reserved area, transmission receiving area and out of use speckle regions, between out of use speckle regions and transmission receiving area and the figure of the ultrasonic array oscillator in the 4th region changing between out of use state and transmission accepting state.
Figure 12 is the figure that toe curve chart represents together with ultrasonic array oscillator that cuts relevant to present embodiment, that the center weight at ring is become to maximum.
Figure 13 is the figure that toe curve chart represents together with ultrasonic array oscillator that cuts relevant to present embodiment, that weight in the outer rim of speckle is become to maximum.
Figure 14 to be relevant to present embodiment for representing, can on any direction that deflection direction and elevation direction are combined, make the figure of the ultrasonic array oscillator that speckle rotates.
Figure 15 is for representing the figure of ultrasonic array oscillator relevant to present embodiment, that have polygon peristome.
Figure 16 is for representing figure relevant to present embodiment, that have the ultrasonic array oscillator of elliptical openings and polygon speckle.
Figure 17 is relevant to present embodiment for representing, basis is cut the flow chart of step that toe profile is multiplied by the processing of weight to received signal.
Figure 18 is for representing figure relevant to present embodiment, that have the diagnostic ultrasound equipment of device body, adapter, cable, handle and ultrasonic array oscillator.
Figure 19 A is for representing the figure of typical structure relevant to present embodiment, device body.
Figure 19 B is for representing the figure of typical structure relevant to present embodiment, device body.
(symbol description)
20 ultrasonic array oscillators, 21 receive vibrating elements, 22 send vibrating elements, 23 send reception vibrating elements, 24 speckles, 25 send vibrating elements, 26 receive vibrating elements, 28 out of use elements, 29 send reception vibrating elements, 32 speckles, 37 speckles, 39 from sending to the switching receiving, 40 cut toe curve chart (ring center), 41 cut toe curve chart (inner center), 42 speckles, 52 dynamic speckles, 52A minimum dimension, 52B full-size, 55 regions that can switch, 60 ultrasonic array oscillators, 62 speckles, 81 ultrasonic array oscillators, 82 adapters, 83 cables, 85 device bodies, 87 hands handles, 89 diagnostic ultrasound equipments, 171 sending parts, 172 acceptance divisions, 173 send reception control part, 1001 storage mediums, 1002 mass storage devices, 1003 memorizer portions, 1004CPU, 1005 interface portion
The specific embodiment
The diagnostic ultrasound equipment that an embodiment of the invention relate to comprises ultrasound probe, sending part, acceptance division and sends reception control part.Ultrasound probe has a plurality of the 1st oscillators of two-dimensional arrangements within comprising the 1st region of open centre and a plurality of the 2nd oscillators of two-dimensional arrangements in the 2nd region of the surrounding in above-mentioned the 1st region.Sending part is supplied with driving signal to above-mentioned the 1st oscillator and the 2nd oscillator.Acceptance division produces and receives signal according to the echo-signal being produced by above-mentioned the 1st oscillator and the 2nd oscillator.Send receiving control part carries out for only above-mentioned the 2nd oscillator being supplied with to the control of the above-mentioned sending part that drives signal and for only using the echo-signal being produced by above-mentioned the 2nd oscillator to produce at least one control of the control of the above-mentioned acceptance division that receives signal.
Below, with reference to the accompanying drawings of the ultrasonic array oscillator relating to present embodiment.Present embodiment has the ultrasonic array oscillator of two-dimentional type.Ultrasonic array oscillator has any one in the oscillator of piezoelectric vibrator, electrostatic capacitance amount type ultrasonic oscillator (Capacitive Micromachined Ultrasonic Transducer: hereinafter referred to as CMUTS), piezo-electric type micromachined ultrasonic oscillator (Piezoelectric Micromachined Ultrasonic Transducer: hereinafter referred to as PMUTS) and other suitable kind.Ultrasonic array oscillator has a plurality of vibrating elementss.
In the ultrasonic array oscillator relating in present embodiment, the bearing surface of a plurality of oscillator butt subjects or the opening of ultrasound probe about two-dimensional arrangements have speckle regions (hereinafter referred to as speckle), and this speckle regions has a plurality of vibrating elementss that become inactive state (can not use) during at least one party who carries out hyperacoustic send and receive.
One of advantage of this speckle regions is as follows.By speckle regions is set on opening, thereby the scope of received beam is narrowed down.Its result, the resolution of the transverse direction of low coverage in leaving the theatre improves, and associated picture quality improves.And the quantity of the vibrating elements of the active state being associated with the raising of resolution is compared minimizing with the sum of the vibrating elements in ultrasound probe.As the minimizing of the quantity of the vibrating elements of active state (can use), making to consume electric power reduces.And, become the requirement condition step-down of the hardware arranging in the vibrating elements of inactive state.The requirement condition of so-called hardware is the desired condition of hardware arranging in each vibrating elements.For example, about hyperacoustic transmission, receive and become the hardware arranging in the vibrating elements of active state, require to receive relevant function with hyperacoustic transmission.On the other hand, about hyperacoustic transmission, become the hardware arranging in the vibrating elements of inactive state, do not require that the function relevant with hyperacoustic transmission is (following, be called ultrasound wave sending function), and the requirement function (following, be called ultrasound wave receiving function) relevant with hyperacoustic reception.Requiring the hardware of ultrasound wave sending function is for example ultrasound wave transtation mission circuit.On the other hand, about hyperacoustic reception, become the hardware arranging in the vibrating elements of inactive state, do not require ultrasound wave sending function, and require ultrasound wave receiving function.Requiring the hardware of ultrasound wave receiving function is for example ultrasound wave receiving circuit.
And, as the minimizing of the quantity of the vibrating elements of active state, suppress relevant cost.For example, when hardware requirement ultrasound wave sending function or ultrasound wave receiving function, the circuit number of lift-launch in ultrasound probe is owing to existing the vibrating elements that ultrasound wave sending function or ultrasound wave receiving function are only set to tail off.Its result reduces the cost of ultrasound probe.And, at the vibrating elements of inactive state, when hyperacoustic transmission reception period can not be used, for the vibrating elements of this inactive state, also can omit ultrasound wave transtation mission circuit and ultrasound wave receiving circuit.
The ultrasonic array oscillator with the vibrating elements of inactive state has and improves the closely probability of the picture quality of sound field.Closely the raising of the picture quality in sound field is as the result of fresnel diffraction effect and produce.(note: fresnel diffraction is mentioned for the effect of sound field closely.And Fraunhofer diffraction is mentioned for the effect of remote sound field).
Closely the raising of the quality of the signal in sound field is similar to " Ah loudspeaker's dagger-axe hot spot " or " Poisson bright spot " effect that can see in the characteristic of optics.Be called the word of Ah loudspeaker's dagger-axe hot spot for the principle of the diffraction of optics.The principle of the diffraction in optics is mentioned for the result of situation that has the big or small opaque disk corresponding with the 1st Fresnel region and be replaced into the opening of the 1st Fresnel region.In this case, the amplitude of light becomes half (during Fresnel ring 2).But the irradiance of the central part of shadow is the irradiance identical with irradiance without territory, shadow zone.And the irradiance of the central part of shadow is compared more slightly and is converged with the situation that there is no opaque disk.
In the structure of present embodiment, relevant with the opaque disk that produces Ah loudspeaker's dagger-axe hot spot as the vibrating elements of the inactive state in speckle regions.The vibrating elements in inactive state in speckle regions produces the consistent wave beam of focus in sound field closely.The wave beam that focus is consistent improves picture quality.Central part by the opening at ultrasonic array oscillator is used the special-purpose vibrating elements corresponding with opaque disk, and the quantity of at least one the necessary vibrating elements in hyperacoustic send and receive is not compared minimizing with there is no the situation of special-purpose vibrating elements.The minimizing of the quantity of the vibrating elements that this is essential makes the cost for consumption electric power and electronic circuit.
Above-mentioned speckle has a lot of different shapes.As an example, be that while using probe from the two-dimentional heart of outside utilization, the shape of opening is generally rectangle.The shape of whole probe is rectangle.But the shape of speckle is circle or oval.According to optical principle, by hyperacoustic boundling that the effect of Ah loudspeaker's dagger-axe hot spot is obtained, typically by circular opening, realize.Known oval-shaped " hole " (that is, speckle) that is positioned at opening central authorities, when comparing with circular " hole ", do not change the characteristic of wave beam greatly.Oval-shaped " speckle " (from the point of the focus direction along wave beam) that is positioned at the central part of ultrasonic array oscillator seems more as circle when departing from wave beam.Therefore,, in above-mentioned condition, oval " speckle " compares the closely sound field beam pattern that generation has been assembled more with circle " speckle ".
Elliptical spot works in following situation.From ultrasound probe front, by turning to the direction (hereinafter referred to as steering direction) that is offset to observe ultrasonic beam while observing, the elliptical spot having flattened according to observation cosine of an angle moves closer to circular opening.When ultrasonic beam is offset by turning to from ultrasound probe front, prolongation by the opening not sending or the opening not receiving (speckle) makes circular speckle be extended to ellipse, thereby elliptical spot can be so that the shape of the speckle of observing from scan-line direction becomes circular mode compensates.When being formed in of the speckle of compensation carried out following turning to and produce.For example, when carrying out the turning to of the ultrasonic beam of hyperacoustic transmission in receiving and receiving, to change with the mode that sends and receive relevant direction of visual lines, from ultrasonic beam to ultrasonic beam, carry out while turning to the situation of switched scan line etc.Now, while approaching 0 ° when the center by opening and perpendicular to the direction of this opening and the angle between steering direction (hereinafter referred to as steering angle), the shape of compensatory speckle approaches circular.In addition, when steering angle becomes larger or than 0 ° hour, the shape of compensatory speckle became ellipse than 0 °.And along with steering angle approaches 45 degree or-45 degree, it is large that oval flat ratio becomes.
Following table 1 shows the function corresponding with the 1st to the 3rd region difference and the corresponding table of a plurality of embodiments.The 1st region is the region that comprises open centre.The 2nd region is for surrounding the region in the 1st region.The 3rd region is for surrounding the region in the 2nd region.
(table 1) ★ ★
(the 1st embodiment)
(circular spot)
Figure 1A is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array ticker 20 has the special-purpose transmission vibrating elements 25 of transmission, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elementss 23, have the special use of receiving in the 3rd region in the speckle 24 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.25 of transmission vibrating elementss in speckle 24 send ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function switch mutually by the transmission reception control part of the wave beam formation processing portion in device body described later.
(elliptical spot)
Fig. 2 A is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose a plurality of transmission vibrating elementss 25 of transmission, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elementss 23, have the special use of receiving in the 3rd region in the speckle 32 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject transmitting.25 of transmission vibrating elementss in speckle 32 send ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 2nd embodiment)
(circular spot)
Figure 1B is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array oscillator 20 has the special-purpose a plurality of reception vibrating elementss 26 of reception, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elementss 23, have the special use of receiving in the 3rd region in the speckle 24 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.Reception vibrating elements 26 in speckle 24 receives only from the ultrasound wave of subject reflection.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(elliptical spot)
Fig. 2 B is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose a plurality of reception vibrating elementss 26 of reception, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elementss 23, have the special use of receiving in the 3rd region in the speckle 32 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.26 of reception vibrating elementss in speckle 32 send ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 3rd embodiment)
(circular spot)
Fig. 1 C is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elements 23, have the special use of receiving in the 3rd region in the speckle 24 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.Out of use element 28 in speckle 24 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(elliptical spot)
Fig. 2 C is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elements 23, have the special use of receiving in the 3rd region in the speckle 32 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.Out of use element 28 in speckle 32 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(dynamic speckle)
Below, for dynamic speckle, describe.So-called dynamic speckle is according to hyperacoustic transmission and hyperacoustic reception, receives control part make the size of the speckle corresponding with the 1st region or the speckle that shape dynamically changes by transmission.Meanwhile, also can make the size of speckle or shape receive hyperacoustic during continuously, dynamically change.
Fig. 3 A is the figure that expression has the ultrasonic array oscillator 20 of dynamic speckle 52.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, in the 2nd region, has a plurality of reception vibrating elementss 21 that a plurality of transmissions receive vibrating elements 23, have the special use of receiving in the 3rd region in the dynamic speckle 52 as the 1st region.Receiving vibrating elements 21 receives only from the ultrasound wave of subject reflection.Out of use element 28 in dynamic speckle 52 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
In region between full-size 52B and minimum dimension 52A, configure the region that can switch 55 corresponding with the 4th region.A plurality of elements of arranging in the region 55 that can switch (following, to be called the element that can switch) have the function relevant with out of use element 28 and receive the relevant function of vibrating elements 23 with transmission.For the switching of the function of the element that can switch, by transmission described later, receiving control part carries out.Dynamic speckle 52 can be by being used the vibrating elements can switching, and expands or narrow down to full-size 52B or minimum dimension 52A.Like this, the size of dynamic speckle 52 (scope in the 1st region) can be either large or small.For example, and the shape of dynamic speckle 52 can, according to the degree of depth of the feature that ultrasound wave is converged in focus and image,, change to ellipse from circle.In addition, the control of the switching relevant with the vibrating elements 55 that can switch also can be processed by other circuit in device body or ultrasound probe.
About a plurality of elements, be made as that can to use and be made as and can not use be to determine according to making direction that ultrasound wave assembles in focus and the distance from open centre to focus (following, to be called focal length).Or, about the vibrating elements that can switch, be made as that can to use and be made as and can not use be the wave beam formation processing portion by device body described later, according to above-mentioned azimuth direction and above-mentioned focal length, determine.Like this, hand-off process is to have considered that focus that the execution by the function relevant with ultrasonic array oscillator produces and the shape of speckle 52 carry out.For example, the shape of speckle 52 and size according to circumstances, determine by distinctive other parameter in the degree of depth, transmission focus and the speckle of consideration image.And, the long distance of leaving the theatre from low coverage leave the theatre dynamically aim at wave beam focus during, the principle relevant with the processing of switching is updated gradually.Like this, the size and shape of dynamic speckle 52 is correctly controlled.Its result, during the low coverage during two-dimensional scan is left the theatre, can obtain more accurate and correct image.
(the 4th embodiment)
Fig. 3 B is for representing the figure of the ultrasonic array oscillator 20 relevant to the 4th embodiment.Ultrasonic array oscillator 20 has the dynamic speckle of different sizes in hyperacoustic transmission from receiving.Ultrasonic array oscillator 20 shown in Fig. 3 B has with the ultrasonic array oscillator of Fig. 3 A similarly constructs.As shown in Fig. 3 B (1), when ultrasonic array oscillator 20 sends ultrasound wave, receive vibrating elements 21 for inactive state.Now, send and receive vibrating elements 23 execution ultrasound wave sending functions.And the function of a plurality of elements that can switch in the region 55 that can switch receives control part by transmission described later and is set to ultrasound wave sending function.Vibrating elements in dynamic speckle 52B is out of use element 28.Dynamic speckle 52B has and the 1st size of the same size with the speckle of out of use element 28 in hyperacoustic transmission.
Fig. 3 B (2) shows and receives hyperacoustic ultrasonic array oscillator 20.Now, receiving vibrating elements 21 is active state.Send and receive vibrating elements 23 execution ultrasound wave receiving functions.Vibrating elements in the region 55 that can switch receives control part by transmission described later and is set to and can not uses.Vibrating elements in speckle is out of use element 28.Like this, dynamic speckle 52A, in reception, has the 2nd size that speckle 28 and the region 55 that can switch are combined.Above-mentioned example also works in sending special-purpose situation, receive special-purpose situation and being used in the situation that sends reception in speckle regions.
Fig. 3 C is the big or small curve chart of expression across the dynamic speckle of the process of time.In Fig. 3 C, the size of the speckle during the size of the speckle during ultrasound wave sends receives than ultrasound wave is also large.As shown in Figure 3 C, the size of dynamic speckle 52 changes from sending to receiving the moment 39 of switching at ultrasonic array oscillator.The size that example shown in Fig. 3 C shows the dynamic speckle in transmission is also less than the size of the dynamic speckle in receiving.And the size of the dynamic speckle in transmission also can be also larger than the size of the dynamic speckle in receiving.And, the size of the dynamic speckle in transmission can also with receive in the equal and opposite in direction of dynamic speckle.
(the 5th embodiment)
The ultrasonic array oscillator (dynamic speckle 52, reception vibrating elements 21, transmission receive vibrating elements 23, out of use element 28) with the structure shown in Fig. 3 A for example, is used according to the curve chart shown in Fig. 4 A.Curve chart in Fig. 4 A (1) and curve chart (2) show the size along with the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in the transmission in these curve charts and reception.The size of the dynamic speckle 52 in Fig. 4 A changes in the reception of ultrasonic beam.As shown in Figure 4 A, it is opportunity that the size of dynamic speckle 52 be take the switching 39 of ultrasonic array oscillator from hyperacoustic transmission to hyperacoustic reception, receives control part change by transmission described later.The curve chart of Fig. 4 A (1) shows along with the increase that receives the time of ultrasonic beam, and the size of dynamic speckle 52 increases.The curve chart of Fig. 4 A (2) shows along with the increase that receives the time of ultrasonic beam, and the size of dynamic speckle 52 reduces.And the size of dynamic speckle 52 also can repeatedly repeat to increase and reduce or reduce and increase in the reception of ultrasonic beam.
(the 6th embodiment)
The ultrasonic array oscillator (dynamic speckle 52, reception vibrating elements 21, transmission receive vibrating elements 23, out of use element 28) with the structure shown in Fig. 3 A is used in the example shown in Fig. 4 B.Fig. 4 B is the big or small curve chart of expression along with the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in transmission and reception.And in Fig. 4 B, the size of the dynamic speckle 52 in reception receives control part by transmission described later and changes in the reception of ultrasonic beam.The size of the dynamic speckle 52 in Fig. 4 B also can change when each switching ultrasonic beam (for every scanning line).And, as shown in Figure 4 B, the size of dynamic speckle 52 also can for the 1st, the 2nd ultrasonic beam each from send to receive switching 39 time change.Fig. 4 B shows two ultrasonic beams.And the example shown in Fig. 4 B can be adapted to a plurality of ultrasonic beams.And as shown in Figure 4 B, the size of dynamic speckle 52 increases on during reception the 1st ultrasonic beam.The size of dynamic speckle 52 can also increase in the reception of the 1st ultrasonic beam, the 2nd ultrasonic beam, other ultrasonic beam, minimizing or constant.The size of dynamic speckle 52 can also, in each the relevant reception to a plurality of ultrasonic beams, be carried out and repeatedly increase and reduce or reduce and increase.Send to receive the 1st ultrasonic beam during dynamic speckle 52 size can also from send receive the 2nd ultrasonic beam during the size of dynamic speckle 52 different respectively.
(the 7th embodiment)
(circular spot)
Fig. 5 A is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array ticker 20 has the special-purpose transmission vibrating elements 25 of transmission, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 24 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.25 of the transmission vibrating elementss of the transmission special use in speckle 24 send ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by the transmission in device body described later and mutually switch.
(elliptical spot)
Fig. 6 A is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose transmission vibrating elements 25 of transmission, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 32 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function and the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.25 of the transmission vibrating elementss of the transmission special use in speckle 32 send ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 8th embodiment)
(circular spot)
Fig. 5 B is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array ticker 20 has the special-purpose reception vibrating elements 26 of reception, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 24 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.The reception vibrating elements 26 of the reception special use in speckle 24 receives only ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by the transmission in device body described later and mutually switch.
(elliptical spot)
Fig. 6 B is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose reception vibrating elements 26 of reception, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 32 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.The reception vibrating elements 26 of the reception special use in speckle 32 receives only ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 9th embodiment)
(circular spot)
Fig. 5 C is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array ticker 20 has out of use element 28, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 24 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.Out of use element 28 in speckle 24 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(elliptical spot)
Fig. 6 C is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has out of use element 28, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the speckle 32 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 29 receive and switch according to hyperacoustic transmission.Out of use element 28 in speckle 32 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 10th embodiment)
Fig. 7 is the figure that expression has the ultrasonic array oscillator 20 of dynamic speckle 52.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, has a plurality of transmissions reception vibrating elementss 23 in the 2nd region, in the 3rd region, has a plurality of transmissions reception vibrating elementss 29 in the dynamic speckle 52 as the 1st region.Send and receive vibrating elements 29 transmission reception ultrasound wave.Send reception vibrating elements 29 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function of transmission reception vibrating elements 29 or ultrasound wave receiving function receive control part by transmission and receive and switch according to hyperacoustic transmission.Out of use element 28 in dynamic speckle 52 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
Fig. 8 be illustrated in hyperacoustic transmission from receive in there is the figure of ultrasonic array oscillator 20 of the dynamic speckle of different sizes.Ultrasonic array oscillator 20 shown in Fig. 8 has with the ultrasonic array oscillator of Fig. 7 similarly constructs.As shown in Fig. 8 (1), when ultrasonic array oscillator 20 sends ultrasound wave, by transmission described later, receive control part, the function that sends reception vibrating elements 29 is set to ultrasound wave sending function, and the function that sends reception vibrating elements 23 is also set to ultrasound wave sending function.And the function of a plurality of elements that can switch in the region 55 that can switch receives control part by transmission described later and is set to ultrasound wave sending function.Vibrating elements in dynamic speckle 52B is out of use element 28.Dynamic speckle 52B, in hyperacoustic transmission, has and the 1st size of the same size with the speckle of out of use element 28.
Fig. 8 (2) shows the ultrasonic array oscillator 20 while receiving ultrasound wave.Now, the function of transmission reception vibrating elements 29 is set to ultrasound wave receiving function.The function that sends reception vibrating elements 23 is also set to ultrasound wave receiving function.Vibrating elements in the region 55 that can switch is set to and can not uses.Vibrating elements in speckle is out of use element 28.Like this, dynamic speckle 52A has the 2nd size that speckle 28 and the region 55 that can switch are combined in reception.Above-mentioned example also can work in sending special-purpose situation, receive special-purpose situation and being used in the situation that sends reception in speckle regions.As shown in Figure 3 C, dynamic speckle 52 has different size in sending reception.
(the 11st embodiment)
The ultrasonic array oscillator (dynamic speckle 52, transmission receive vibrating elements 29, send reception vibrating elements 23, out of use element 28) with the structure shown in Fig. 7 for example, is used according to the curve chart shown in Fig. 4 A.Curve chart in Fig. 4 A (1) and curve chart (2) show the size across the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in the transmission in these curve charts and reception.In Fig. 4 A, the size of the dynamic speckle 52 in reception receives control part by transmission described later and dynamically changes in the reception of ultrasonic beam.The size of the dynamic speckle 52 shown in Fig. 7 in transmission from receiving, be different size.And the size of dynamic speckle 52A also can change in reception.
(the 12nd embodiment)
The ultrasonic array oscillator (dynamic speckle 52, transmission receive vibrating elements 29, send reception vibrating elements 23, out of use element 28) with the structure shown in Fig. 7 is used in the example shown in Fig. 4 B.Fig. 4 B is the big or small curve chart of expression across the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in transmission and reception.And in Fig. 4 B, the size of the dynamic speckle 52 in reception receives control part by transmission described later and changes in the reception of ultrasonic beam.The size of the dynamic speckle 52 in Fig. 4 B also can change when each switching ultrasonic beam (for every scanning line).Like this, the size of the dynamic speckle shown in Fig. 7 52 has different sizes in transmission from receiving.The size of dynamic speckle 52 also can change in reception.And the size of dynamic speckle 52 can also change when each switching ultrasonic beam (for every scanning line).
(the 13rd embodiment)
(circular spot)
Fig. 9 A is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array ticker 20 has the special-purpose transmission vibrating elements 25 of transmission, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elementss 23, have the special use of sending in the 3rd region in the speckle 24 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Transmission vibrating elements 25 in speckle 24 also only sends ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function switch mutually by the transmission reception control part of the wave beam formation processing portion in device body described later.
(elliptical spot)
Figure 10 A is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose a plurality of transmission vibrating elementss 25 of transmission, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elementss 23, have the special use of sending in the 3rd region in the speckle 32 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Transmission vibrating elements 25 in speckle 24 also only sends ultrasound wave.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 14th embodiment)
(circular spot)
Fig. 9 B is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array oscillator 20 has the special-purpose reception vibrating elements 26 of reception, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elementss 23, have the special use of sending in the 3rd region in the speckle 24 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Reception vibrating elements 26 in speckle 24 receives only from the ultrasound wave of subject reflection.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(elliptical spot)
Figure 10 B is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has the special-purpose a plurality of reception vibrating elementss 26 of transmission, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elementss 23, have the special use of sending in the 3rd region in the speckle 32 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Reception vibrating elements 26 in speckle 24 receives only from the ultrasound wave of subject reflection.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 15th embodiment)
(circular spot)
Fig. 9 C is the figure that expression has the ultrasonic array oscillator 20 of circular spot 24.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elements 23, have the special use of sending in the 3rd region in the speckle 24 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Out of use element 28 in speckle 24 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(elliptical spot)
Figure 10 C is the figure that expression has the ultrasonic array oscillator 20 of elliptical spot 32.Ultrasonic array oscillator 20 has a plurality of out of use elements 28, in the 2nd region, has a plurality of transmission vibrating elementss 22 that a plurality of transmissions receive vibrating elements 23, have the special use of sending in the 3rd region in the speckle 32 as the 1st region.Send 22 of vibrating elementss and send ultrasound wave.Out of use element 28 in speckle 32 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.Ultrasound wave sending function and ultrasound wave receiving function receive control part by transmission described later and mutually switch.
(the 16th embodiment)
Figure 11 A is the figure that expression has the ultrasonic array oscillator 20 of dynamic speckle 52.Ultrasonic array oscillator 20 has a plurality of out of use elements 28 in the dynamic speckle 52 as the 1st region, in the 2nd region, have that a plurality of transmissions receive vibrating elementss 23, a plurality of transmission vibrating elementss 22 in the 3rd region.Send 22 of vibrating elementss and send ultrasound wave.Out of use element 28 in dynamic speckle 52 is to send or to receive hyperacoustic element.Send and receive vibrating elements 23 transmission reception ultrasound wave.Send reception vibrating elements 23 and there is ultrasound wave sending function and ultrasound wave receiving function.The ultrasound wave sending function or the ultrasound wave receiving function that send reception vibrating elements 23 are received and switch according to hyperacoustic transmission by transmission reception control part described later.
Figure 11 B be show have in hyperacoustic transmission from receive in there is the figure of ultrasonic array oscillator 20 of the dynamic speckle of different sizes.Ultrasonic array oscillator 20 shown in Figure 11 B has with the ultrasonic array oscillator of Figure 11 A similarly constructs.As shown in Figure 11 A (1), when ultrasonic array oscillator 20 sends ultrasound wave, send vibrating elements 22 and send ultrasound wave, the function that sends reception vibrating elements 23 receives control part by transmission described later and is set to ultrasound wave sending function.And the function of a plurality of elements that can switch in the region 55 that can switch receives control part by transmission described later and is set to ultrasound wave sending function.Vibrating elements in dynamic speckle 52B is out of use element 28.Dynamic speckle 52B, in hyperacoustic transmission, has and the 1st size of the same size with the speckle of out of use element 28.
Figure 11 B (2) shows the ultrasonic array oscillator 20 while receiving ultrasound wave.Now, send vibrating elements 22 for inactive state.The function that sends reception vibrating elements 23 is set to ultrasound wave receiving function.Vibrating elements in the region 55 that can switch receives control part by transmission described later and is set to and can not uses.Vibrating elements in speckle is out of use element 28.Like this, dynamic speckle 52A has the 2nd size that speckle 28 and the region 55 that can switch are combined in reception.Above-mentioned example also can work in sending special-purpose situation, receive special-purpose situation and being used in the situation that sends reception in speckle regions.As shown in Figure 3 C, dynamic speckle 52 is of different sizes in sending reception.
(the 17th embodiment)
The ultrasonic array oscillator (dynamic speckle 52, transmission vibrating elements 22, transmission receive vibrating elements 23, out of use element 28) with the structure shown in Figure 11 A is used according to example curve chart as shown in Figure 4 A.Curve chart in Fig. 4 A (1) and curve chart (2) show the size across the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in the transmission in these curve charts and reception.In Fig. 4 A, the size of the dynamic speckle 52 in reception dynamically changes in the reception of ultrasonic beam.The size of the dynamic speckle 52 shown in Figure 11 A in transmission from receiving, be different sizes.And the size of dynamic speckle 52A also can change in reception.
(the 18th embodiment)
The ultrasonic array oscillator (dynamic speckle 52, transmission vibrating elements 22, transmission receive vibrating elements 23, out of use element 28) with the structure shown in Figure 11 A is used in the example shown in Fig. 4 B.Fig. 4 B is the big or small curve chart of expression along with the dynamic speckle of the process of time.Varying in size of speckle in the size of the speckle in transmission and reception.And in Fig. 4 B, the size of the dynamic speckle 52 in reception receives control part by transmission described later and changes in the reception of ultrasonic beam.And the size of the dynamic speckle 52 in Fig. 4 B also can change when each switching ultrasonic beam (for every scanning line).Like this, the size of the dynamic speckle shown in Figure 11 A 52 has different sizes in transmission from receiving.The size of dynamic speckle 52 also can change in reception.And the size of dynamic speckle 52 can also change when each switching ultrasonic beam (every scanning line).
Figure 12 is the figure relevant with cutting toe with Figure 13.Cut toe generally for the center at array oscillator produces maximum reception signal, be applied to one-dimensional array oscillator and two-dimensional array oscillator.Cut toe in order to produce minimum signal in the element of central part that leaves farthest mouth, be applied to one-dimensional array oscillator and two-dimensional array oscillator.By the weighting of cutting toe generation, by Hamming function, Hanning function, raised cosine etc., defined.
The Fresnel Lenses principle of standard is expressed as follows.For example, by a plurality of Fresnel rings of crosscut each SIN function weighting cut toe profile expectation focus on correctly gather energy.Particularly, the toe (following, to be called anxious toe in ring) of cutting that makes to be multiplied by the weight maximum of the echo-signal being produced by a plurality of oscillators (hereinafter referred to as ring center) of mid point that are positioned at the radius vector of opening or the driving signal that is supplied to this oscillator in the opening except speckle is similar to above-mentioned optical principle.In ring, anxious toe, as the cutting as shown in toe curve Figure 40 of Figure 12 as cutting an example of toe profile, improves and is utilized in order to improve into image focus.For example, and anxious toe is used (, approaching field or middle distance field etc.) for a position in image in ring.Figure 13 make to be multiplied by the echo-signal being produced by the oscillator that is positioned at the outer edge of speckle or the driving signal that is supplied to this oscillator weight maximum cut toe (following, to be called anxious toe in the inner).In the inner anxious toe therefrom distance field to long distance, leave the theatre, in order to obtain the most highly sensitive sensitivity, use.In long distance is left the theatre, interior smoothedization of end-grain cutting toe.According to Figure 13 cut toe curve Figure 41, be appreciated that the end that is centered close to speckle 24 of cutting toe.Like this, in ring, anxious toe works in a lot of embodiments.For the optimization of the parameter except parameter in focus and change cut toe profile when Optimization for Ultrasonic Wave image, from memorizer described later portion, read.
And different types of toe of cutting also can be used diagnostic ultrasound equipment by transmission reception control part described later.Especially, the transmission of certain kind is cut toe by carrying out sending the energy weighting of waveform.For example, send and to cut toe by the amplitude variations of each waveform on the vibrating elements of ultrasonic array oscillator is realized.And, for example, send cut toe also can be by utilizing the modulation of pulse amplitude, the quantitative change of the energy that can utilize in pulse is realized.The raising that toe provides the performance of image conversion is cut in transmission.Reception is cut toe and is applicable to the weight for channel to be multiplied by from the echo-signal of this channel output.About analog systems, receive and cut toe by controlling to realize with each relevant gain of a plurality of channels.Digital display circuit, before cutting toe processing, is carried out analog digital conversion.Reception is cut toe by utilizing wave beam formation processing described later portion to realize to cut the weight of toe digital signal times.
In addition, the subarray that the weighting based on cutting toe also goes for that a plurality of oscillator groupings in ultrasonic array oscillator 20 are formed forms the situation of 1 channel.Weighting based on cutting toe is applicable to the reception signal of a plurality of vibrating elementss that comprise from subarray (following, to be called subarray element) output to add up to the signal obtaining.When utilizing subarray element, from the signal of each subarray element output, before toe is cut in enforcement reception, after directly or relatively postponing, adding up to.
Figure 14 is for having configured an example of speckle 42 in the direction deflection direction and elevation direction are combined.The example of above-mentioned ultrasonic array oscillator 20 shows the speckle 42 in certain configuration.And as shown in figure 14, the configuration of speckle can receive control part by transmission described later and be set as circle, oval, other shape in any direction.And speckle 42 and the central authorities that are configured in ultrasonic array oscillator 20 similarly, also can be configured in off-centered place.And speckle 42 is used in the time of also can using the ultrasonic beam being diverted the opening both sides of the opening for sending and reception.And speckle 42 also can be configured to have best the ultrasonic beam being diverted in the direction that deflection direction and elevation direction are combined.
And the dynamic change of the speckle 42 relevant with receiving opening also can produce according to the degree of depth of focus (focal length).For example, speckle 42 is dynamically updated according to the degree of depth receiving.Use the same method, for example, the transmission in wave beam formation processing described later portion receives control part and shoals along with receiving the degree of depth of focus, by the size of speckle 42 dynamically with new for less.Now, the size that receives opening becomes large, receives opening and has more channel.
In addition, present embodiment also can replace having the ultrasonic array oscillator of oval profile, is applicable to have the ultrasonic array oscillator of polygonal profile.Polygonal ultrasonic array oscillator 60 shown in Figure 15 has the reception of transmission vibrating elements 21 and speckle 62.Polygonal ultrasonic array oscillator 60 also can be applicable to above-mentioned arbitrary embodiment.
In addition, the shape of speckle or the shape of dynamic speckle also can have polygonal shape.And these shapes can be also irregular polygons for example.Figure 16 is for representing to have the figure of an example of the speckle of polygonal shape.
Figure 17 to be relevant to present embodiment for representing, by cutting the flow chart of step of the processing of toe execution.Reception is from the ultrasound wave (step S1) of subject reflection.If there is subarray (step S2), calculate from the echo-signal sum (step S3) of each the subarray element output relevant with radio frequency channel.When not there is not subarray (step S2) or after the processing of step S3, according to anxious toe in anxious toe or the inner in ring etc. cut toe profile, determine to distinguish corresponding weight (step S4) with a plurality of channels in ultrasonic array oscillator.The weighting determining for each channel is multiplied by from the reception signal (step S5) of each channel output.In addition, above-mentioned treatment step also can be carried out with analogue signal or digital signal.And above-mentioned treatment step also can be carried out by analog circuit or the digital computer carrying on diagnostic ultrasound equipment.
(the 19th embodiment)
Figure 18 is for representing the figure of typical diagnostic ultrasound equipment 89.Diagnostic ultrasound equipment 89 has device body 85, adapter 82, cable 83, handle 87.In addition, diagnostic ultrasound equipment 89 also can be connected to several input/output units.Below, handle 87 and ultrasonic array oscillator 81 are collectively referred to as to ultrasound probe.Cable 83 is connected with device body 85 via adapter 82.Cable 83 is connected with ultrasonic array oscillator 81 via handle 87.End at handle 87 arranges ultrasonic array oscillator 81.On the opening of ultrasonic array oscillator 81, arrange the 1st to illustrated speckle in the 18th embodiment.The relevant necessary processing of the execution of processing with image conversion of this diagnostic ultrasound equipment 89 is carried out by device body 85 completely or partially.And the relevant necessary processing of the execution of processing with image conversion of this diagnostic ultrasound equipment 89 also can partly be carried out in the handle 87 of ultrasound probe.A part for the processing of above-mentioned necessity is carried out by the wave beam formation processing portion of the handle 87 interior settings of for example ultrasound probe.And ultrasound wave transtation mission circuit and ultrasound wave receiving circuit that a part for the processing of above-mentioned necessity also can be connected by the channel with ultrasonic array oscillator 81 are carried out.For example, the transmission that the needed processing of out of use element in the speckle regions of dynamic speckle 52 arranges in device body 85 or probe receives under the control of control part, by sending part or acceptance division, carries out.
Figure 19 A and Figure 19 B are that representation case is as the structure chart of the structure of the device body relevant to present embodiment 85.Device body 85 shown in Figure 19 A and Figure 19 B is except wave beam formation processing portion 1007 is arranged at the state in device body 85 in Figure 19 B, all identical.In the present embodiment shown in Figure 19 A, wave beam formation processing portion 1007 is not present in device body.But wave beam formation processing portion 1007 is arranged in the handle 87 of ultrasound probe.
Wave beam formation processing portion 1007 has sending part 171, acceptance division 172 and sends reception control part 173.Sending part 171 offers each of each the 1st a plurality of oscillators to the 3rd region by the driving signal that the transmission lag relevant with sending directivity is provided to each oscillator.Sending part 171 can also, according to receive the indication of control part 173 from transmission described later, not offer a plurality of the 1st oscillators by the driving signal of generation.When driving signal not supply with the 1st oscillator in the 1st region, the ultrasound wave being sent out (following, to be called and to send ultrasound wave) does not send to subject using the 1st region as sound opening.Sending part 171 also can receive according to transmission described later the indication of control part 173, carries out to send cut toe for each the driving signal that is supplied to a plurality of the 2nd oscillators.Transmission is cut toe for for example toe of cutting shown in toe curve Figure 41 of cutting of cutting toe curve Figure 40 and Figure 13 of Figure 12.
The echo-signal of each generation of 172 pairs of the acceptance divisions a plurality of oscillators in ultrasonic array oscillator 81 provides the receive delay relevant with receiving directivity.Acceptance division 172 provides the echo-signal of receive delay by additional calculation, produce and receive signal.Acceptance division 172 can, according to receive the indication of control part 173 from transmission described later, not be supplied to the echo-signal of each generation of a plurality of the 1st oscillators by the 1st region rear class and process (such as receive delay, additional calculation etc.) yet.Now, the ultrasound wave being reflected by subject (following, to be called reflection supersonic wave) receives the 2nd, the 3rd region or the 2nd region as sound opening.Acceptance division 172 also can receive according to transmission described later the control of control part 173, carries out to receive cut toe to the signal from a plurality of the 2nd oscillator outputs or from the signal of a plurality of the 2nd, the 3rd oscillator outputs.Reception is cut toe for for example toe of cutting shown in toe curve Figure 41 of cutting of cutting toe curve Figure 40 and Figure 13 of Figure 12.According to above-mentioned transmission directivity and the comprehensive directivity (according to this directivity, determining so-called " ultrasonic scanning line ") that receives directivity decision ultrasound wave transmission reception.
Send and receive control part 173 according to sending hyperacoustic focus (degree of depth) and steering angle, determine the size and shape in the 1st region.Send and receive control part 173 according to the size and shape control sending part 71 in the 1st region determining, so that a plurality of the 1st oscillators in the 1st region are not supplied with and driven signal.Particularly, for example, transmission reception control part 173 cut-out sending parts are connected with a plurality of the 1st oscillators.In addition, sending reception control part 173 also can be not to supply with and to drive the mode of signals control sending part 171 to a plurality of the 1st oscillators from sending part 171.Sending reception control part 173 outputs to the indication for driving signal execution transmission to cut toe in sending part 171.
Send and receive control part 173 according to the focal depth relevant with hyperacoustic reception and the hyperacoustic steering angle of transmission, determine the size and shape in the 1st region.Send and receive control part 173 according to the size and shape in the 1st region determining, the signal of a plurality of the 1st oscillator outputs in the 1st region is not supplied to rear class and processes (for example, postponing additional calculation processing etc.).Particularly, send to receive control part 173 and cut off being connected of acceptance divisions and a plurality of the 1st oscillators.And, send to receive in the echo-signal of each generation of a plurality of oscillators that control part 173 also can be from ultrasonic array oscillator 81 and remove the echo-signal by each generation of a plurality of the 1st oscillators.Send receiving control part 173 also can carry out and receive the indication of cutting toe and output in acceptance division 172 by the echo-signal of each generation for by a plurality of the 2nd oscillators or by the echo-signal of each generation of a plurality of the 2nd, the 3rd oscillator.
Send reception control part 173 and mutually switch ultrasound wave sending function and ultrasound wave receiving function for sending reception vibrating elements.Sending reception control part 173 also can, during transmission is hyperacoustic, is made as reception vibrating elements can not use.Send reception control part 173 also can (following, to be called reception period) be made as transmission vibrating elements can not use during reception is hyperacoustic.Send to receive control part 173 at reception period, from being positioned at the function of the element that the element that can switch of the outer rim of minimum dimension 52A can switch successively to the element that can switch of inner side that is positioned at the outer rim of full-size 52B, from out of use function, change to ultrasound wave receiving function.By this change, the size of speckle dynamically changes to full-size 52B from minimum dimension 52A.
In addition, device body 85 also can have the logical device for specific purposes, the logical device that can set, CPLD (Complex Programmable Logic Devices:CPLDs), scale programmable logic device etc.For the logical device of specific purposes, be for example for the IC (Application Specific Integrated Circuits:ASICs) of special-purpose.The logical device that can set is for example simple programmable logical device (Simple Programmable Logic Devices:SPLDs).Scale programmable logic device is for example field programmable gate array (Field Programmable Gate Arrays:FPGAs).
In addition, device body 85 also can have the not shown display control unit being connected with bus B.Display control unit, in order to show information to operator, is controlled the display as Brown tube (Cathode raytube:CRT).Device body 85 has not shown input equipment.Input equipment outputs to the information of being inputted by operator in device body 85.Input equipment is such as key board unit and positioner etc.Positioner is such as mouse, trace ball or points to rod etc.Positioner for example outputs to the selection of the information of direction and instruction in device body 85.Positioner is controlled the movement of the cursor on display.And, on device body 85, also can connect at least one the printer of catalog etc. in the data of data that printshop produces and storage.
And device body 85, according to the response from CPU1004, is carried out at least a portion of the relevant treatment step of present embodiment.CPU1004 carries out a series of order of storing in the storage device as memorizer portion 1003.Mentioned order also can from mass storage device 1002 or if such other readable storage medium 1001 of storage medium of pulling down read in memorizer portion 1003.In memorizer portion 1003, the above-mentioned a series of order of storage also can be carried out by can process the device of a plurality of programs simultaneously.In addition, as modified embodiment of the present embodiment, circuit structure and order (program) interlock of software that above-mentioned a series of order also can be connected up and be connected by use, or the command execution of replacement software.Like this, present embodiment is not limited to the specific combination of hardware circuit and software.
As mentioned above, device body 85, in order to keep command information corresponding to program relevant with present embodiment, has at least one storage medium that can read by computer 1001 or memorizer portion 1003.Storage medium 1001 or memorizer portion 1003 store data structures, form, record or other data of describing in this manual.The example of the storage medium 1001 that can read by computer is compact disk, hard disk, floppy disk (registered trade mark), tape, photomagneto disk, PROMs (EPROM, EEPROM, flash EPROM), DRAM, SRAM, the storage medium of SDRAM or other magnetizing mediums compact disk (for example, CD-ROM etc.), the regulation that can read by computer.
For the software (program) of control device body 85, for the software (program) of the various devices of driving device body 85, for carry out present embodiment software (program), for making device, this 85 can be saved in the software (program) of operator's dialogue the storage medium that can read by computer or the combination of above-mentioned storage medium.Above-mentioned software is device driver, operating system, developing instrument and application software etc., but is not limited to this.And, at the storage medium that can read by above-mentioned computer, comprise for carrying out a part or the whole computer program of the processing of present embodiment.
The coding mechanism of the computer code element relevant with present embodiment (for example program) of storing in storage medium for translating into machine language or can carry out.The program that the coding mechanism that can translate into machine language or can carry out has script, the program that can translate into machine language, dynamic link library (Dynamic Linked Library:DLLs), JAVA (registered trade mark) classification and can carry out completely, but be not limited to this.And a part for the processing relevant with present embodiment also can be for more excellent performance, reliability or cost, via storage medium or net distribution.
The word that is called " storage medium that can read by computer " of recording in this description with for fill order, to CPU1004, provide the relevant all storage mediums of indication to be associated.The storage medium that can read by computer is not limited to non-volatile media and Volatile media, can be many modes.For example, non-volatile media comprises CD, disk and the photomagneto disk as mass storage device 1002 or removable storage medium 1001.Volatile media comprises the dynamic memory as memorizer portion 1003.
The variety of way relevant with the storage medium that can read by computer comprises to CPU1004 and sends a series of order.For example, order is transferred in the disk of remote computer first.The input being connected with bus B can receive data.The data that receive are configured in bus B.Bus B by data transfer to memorizer portion 1003.CPU1004 reads and fill order from memorizer portion 1003.The order receiving by memorizer portion 1003 is at random kept in mass storage device 1002 after carrying out by CPU1004 or before carrying out.
Network, by more than one network, is supplied with other data equipment by communication data.For example, network (for example, LAN) or the device being operated by service provider, provides connection to other computer by LAN.Provider provides communication service by communication network.In LAN and communication network, for example, make the signal of electricity consumption, electromagnetism or optics.Above-mentioned signal for example, is carried via digit data stream and the Physical layer (, CAT5 cable, coaxial cable, optical fibers etc.) that is associated.And network provides the mobile device as personal digital assistant (Personal Digital Assistant:PDA) and portable computer or the connection of mobile phone.
And the several advantages in present embodiment also can provide according to application program.First advantage is the electric power reducing for two-dimensional ultrasonic array oscillator necessity.The reduction of electric power is because can not use the vibrating elements in speckle at least one party in hyperacoustic send and receive.The 2nd advantage is the response for the ultrasonic beam figure with in the past identical, can be the few parts number of parts number than in the past.This is owing to having used the out of use speckle of vibrating elements.The 3rd advantage is the cost that can reduce the money of ultrasonic array oscillator.The minimizing of cost be due to: special-purpose by use sending in ultrasonic array oscillator, receive the professional components such as special-purpose, speckle is special-purpose, for the component using in the ultrasound wave transtation mission circuit of channel and the circuit number of ultrasound wave receiving circuit and circuit, reduce.The 4th advantage is the requirement condition that can reduce for electrofocusing.This is owing to changing the size of speckle according to focal position.The 5th advantage is according to the shape of speckle, for example, for the desired steering angle of ultrasonographyization (, 0 °～45 °) is upper, to produce the ultrasonic beam that more uniform low coverage is left the theatre.This is because according to the shape of steering angle change speckle.The 6th advantage is to obtain larger opening with vibrating elements number as in the past, obtains the focus characteristics better than this result.This is because the vibrating elements being positioned on speckle can not be used.
Although understand several embodiments of the present invention, but these embodiments all propose as an example, are not used for limiting scope of the present invention.These new embodiments can be implemented with other variety of way, in the scope of main design that does not depart from invention, can carry out various omissions, rewriting, change.These embodiments and distortion thereof are included in scope of invention and main design, and are included in the invention of claims record and the scope of equivalence thereof.
Claims (14)
1. a diagnostic ultrasound equipment, is characterized in that, comprising:
Ultrasound probe, has a plurality of the 1st oscillators of two-dimensional arrangements within comprising the 1st region of open centre and a plurality of the 2nd oscillators of two-dimensional arrangements in the 2nd region of the surrounding in above-mentioned the 1st region;
Sending part, supplies with driving signal to above-mentioned the 1st oscillator and the 2nd oscillator;
Acceptance division, according to the echo-signal being produced by above-mentioned the 1st oscillator and the 2nd oscillator, produces and receives signal; And
Transmission reception control part, execution is used for the control of an above-mentioned sending part to above-mentioned the 2nd oscillator supply driving signal and at least one control by the control of the above-mentioned acceptance division of the echo-signal generation reception signal of above-mentioned the 2nd oscillator generation for a use.
2. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part
Cut off being connected of above-mentioned the 1st oscillator and above-mentioned sending part,
Control above-mentioned acceptance division, make to produce and receive signal according to the echo-signal being produced by above-mentioned the 1st oscillator and the 2nd oscillator.
3. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part
Control above-mentioned sending part, make to supply with above-mentioned driving signal to above-mentioned the 1st oscillator and above-mentioned the 2nd oscillator,
The echo-signal being produced by above-mentioned the 1st oscillator in the echo-signal that removal is produced by above-mentioned the 1st oscillator and the 2nd oscillator.
4. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part
Control above-mentioned sending part, make to supply with above-mentioned driving signal to above-mentioned the 1st oscillator and above-mentioned the 2nd oscillator,
Cut off being connected of above-mentioned the 1st oscillator and above-mentioned acceptance division.
5. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part
Cut off being connected of above-mentioned the 1st oscillator and above-mentioned sending part,
Cut off being connected of above-mentioned the 2nd oscillator and above-mentioned acceptance division.
6. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part
Cut off being connected of above-mentioned the 1st oscillator and above-mentioned sending part, remove the echo-signal being produced by above-mentioned the 1st oscillator in the echo-signal being produced by above-mentioned the 1st oscillator and the 2nd oscillator.
7. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls at least one party in above-mentioned sending part and above-mentioned acceptance division, so that the dimension modifying in above-mentioned the 1st region is the size corresponding with focal length.
8. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls at least one party in above-mentioned sending part and above-mentioned acceptance division, so that the size in above-mentioned the 1st region dynamically changes to the size of regulation.
9. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls at least one party in above-mentioned sending part and above-mentioned acceptance division, so that above-mentioned the 1st region deformation is the shape corresponding with hyperacoustic sending direction.
10. diagnostic ultrasound equipment according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls above-mentioned sending part, makes to change the size in above-mentioned the 1st region by each hyperacoustic sending direction.
11. diagnostic ultrasound equipments according to claim 1, is characterized in that:
Above-mentioned opening has oval or polygonal shape.
12. diagnostic ultrasound equipments according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls above-mentioned sending part, makes driving signal times to being supplied to each above-mentioned the 2nd oscillator with regulation weight corresponding to the position of each above-mentioned the 2nd oscillator with on above-mentioned opening.
13. diagnostic ultrasound equipments according to claim 1, is characterized in that:
Above-mentioned transmission receives control part and controls above-mentioned acceptance division, makes echo-signal to being produced by each above-mentioned the 2nd oscillator be multiplied by the regulation weight corresponding with the position of each above-mentioned the 2nd oscillator on above-mentioned opening.
14. 1 kinds of ultrasound probes, is characterized in that, comprising:
A plurality of the 1st oscillators, two-dimensional arrangements within comprising the 1st region of open centre;
A plurality of the 2nd oscillators, two-dimensional arrangements in the 2nd region of the surrounding in above-mentioned the 1st region;
Sending part, supplies with driving signal to above-mentioned the 1st oscillator and above-mentioned the 2nd oscillator;
Acceptance division, the echo-signal according to being produced by above-mentioned the 1st oscillator and above-mentioned the 2nd oscillator, produces and receives signal; And
Send to receive control part, carry out for only to above-mentioned the 2nd oscillator supply with above-mentioned driving signal above-mentioned sending part control and for only using the echo-signal being produced by above-mentioned the 2nd oscillator to produce at least one control of the control of the above-mentioned acceptance division that receives signal.
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| US12/794,486 | 2010-06-04 | ||
| US12/794,486 US9066703B2 (en) | 2010-06-04 | 2010-06-04 | Medical ultrasound 2-D transducer array architecture: spot of arago |
| JP2011106478A JP5868023B2 (en) | 2010-06-04 | 2011-05-11 | Ultrasonic diagnostic device, ultrasonic probe, and ultrasonic transmission / reception program |
| JP2011-106478 | 2011-05-11 |
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| TW201325556A (en) * | 2011-12-28 | 2013-07-01 | Ind Tech Res Inst | Ultrasound transducer and ultrasound image system and image method |
| CN103654857A (en) * | 2013-12-04 | 2014-03-26 | 江南大学 | Fetal heart signal acquisition device |
| CN104757998B (en) * | 2015-03-23 | 2018-02-02 | 深圳市理邦精密仪器股份有限公司 | A kind of method and device of reduction power consumption for ultrasonic system |
| US10028662B2 (en) * | 2015-05-14 | 2018-07-24 | Endra Life Sciences Inc. | Systems and methods for imaging biological tissue structures |
| US10898166B2 (en) * | 2015-05-14 | 2021-01-26 | Endra Life Sciences Inc. | Systems and methods for imaging biological tissue structures |
| JP7008549B2 (en) * | 2018-03-16 | 2022-01-25 | 富士フイルムヘルスケア株式会社 | Ultrasound diagnostic device |
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| US6783497B2 (en) * | 2002-05-23 | 2004-08-31 | Volumetrics Medical Imaging, Inc. | Two-dimensional ultrasonic array with asymmetric apertures |
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| US6783497B2 (en) * | 2002-05-23 | 2004-08-31 | Volumetrics Medical Imaging, Inc. | Two-dimensional ultrasonic array with asymmetric apertures |
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