WO2014148659A1 - Transducteur à ultrasons - Google Patents

Transducteur à ultrasons Download PDF

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Publication number
WO2014148659A1
WO2014148659A1 PCT/KR2013/002369 KR2013002369W WO2014148659A1 WO 2014148659 A1 WO2014148659 A1 WO 2014148659A1 KR 2013002369 W KR2013002369 W KR 2013002369W WO 2014148659 A1 WO2014148659 A1 WO 2014148659A1
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WO
WIPO (PCT)
Prior art keywords
vibrator element
angle
element assembly
ultrasonic transducer
housing
Prior art date
Application number
PCT/KR2013/002369
Other languages
English (en)
Korean (ko)
Inventor
석지원
Original Assignee
알피니언메디칼시스템 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 알피니언메디칼시스템 주식회사 filed Critical 알피니언메디칼시스템 주식회사
Publication of WO2014148659A1 publication Critical patent/WO2014148659A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/221—Arrangements for directing or focusing the acoustical waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A61B8/4455—Features of the external shape of the probe, e.g. ergonomic aspects
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4477—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device using several separate ultrasound transducers or probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
    • A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0654—Imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver

Definitions

  • This embodiment relates to an ultrasonic transducer. More specifically, two or more vibrator element assemblies having homogeneous or heterogeneous characteristics are arranged and integrated to adjust the angle between the end faces of each vibrator element assembly, thereby reducing speckle and space.
  • the present invention relates to an ultrasonic transducer that can improve resolution.
  • an ultrasonic diagnostic system is a system that irradiates ultrasonic signals from a body surface of a subject toward a target site in the body, extracts information from reflected echo signals, and acquires images of soft tissue tomography or blood flow as non-invasive.
  • ultrasound diagnostic systems are compact, inexpensive, and real-time in comparison with other imaging tools such as X-ray scanners, computerized tomography scanners, magnetic resonance image scanners, nuclear medicine scanners, etc. It is possible to use, and there is no exposure of X-rays, etc., and thus has a high safety advantage.
  • the ultrasound diagnostic system may form an ultrasound image based on tomography data continuously obtained while the ultrasound transducer moves along the surface of the living body. That is, the ultrasound diagnosis system may form an ultrasound image by combining a new tomography image and a previous tomography image. For example, by continuously acquiring a tomography image on a long subject, such as an arm or a leg, and forming the ultrasound image by spatially combining the acquired tomography images, the damaged part of the arm or leg can be easily observed. .
  • one of the basic problems with ultrasonic image processing is noise resulting from scattering, which obscures details of an image or a reflected echo signal of a target among a subject.
  • a type of noise commonly known as speckle, arises from interference and appears to be irregular spots that overlap in the image. Speckles are received from any object having dimensions smaller than the wavelength produced by the ultrasonic transducer, and simply increasing the resolution of the device does not reduce the speckles.
  • speckles come from stationary and randomly distributed objects. Since the speckle has no change in phase or amplitude over time, the speckle cannot be suppressed by averaging the video signal over time. In other words, speckles are coherent and are not reduced by time averages.
  • Spatial synthesis is known to be a valid technique for reducing noise, improving the visualization of specular reflections, and reducing shading artifacts.
  • Image processing by spatial synthesis combines many ultrasound images of a target obtained from multiple viewpoints or angles into a single composite image.
  • the ultrasonic transducer of the conventional planar or convex curved structure is structurally very inconvenient to obtain an image in the curved or convex curved portion of the living body.
  • the arms, legs or shoulders of the human body Therefore, there has been a need for an ultrasonic transducer to solve this inconvenience.
  • the present embodiment is to provide an ultrasonic transducer capable of maximizing image averaging effect and reducing high spatial resolution and speckle.
  • Another object of the present embodiment is to provide an ultrasonic transducer capable of conveniently acquiring an ultrasound image at a site having a curved or curved surface of a living body.
  • One aspect of this embodiment includes a housing; A first vibrator element assembly disposed in the housing for transmitting an ultrasonic wave to a subject and receiving an echo signal; A second vibrator element assembly disposed in the housing and separated from the first vibrator element assembly to transmit ultrasonic waves to the subject and receive an echo signal; And an angle adjusting mechanism for adjusting an angle between the first vibrator element assembly and the second vibrator element assembly.
  • the process of identifying the initial state of the ultrasonic transducer Determining whether an initial angle of each of the oscillator element assemblies is zero; Setting at least one angle of the vibrator element aggregates when the initial angle of all the vibrator element aggregates is zero; Moving the vibrator element assembly at a set angle; Obtaining an image by transmitting ultrasonic waves from each vibrator element assembly to an object under test and receiving an echo signal; And if the initial angle is not 0 provides a method of using an ultrasonic transducer comprising the step of converting to an initial state such that the angle of the vibrator element assemblies is 0.
  • two or more vibrator element assemblies having homogeneous or heterogeneous characteristics are arranged and integrated so as to adjust angles between the end faces of the vibrator element assemblies.
  • the ultrasonic transducer according to the present embodiment, it is also possible to obtain an effect of conveniently acquiring the ultrasound image at a portion where the living body is curved or curved.
  • FIG. 1 is a front view illustrating an ultrasonic transducer according to a first embodiment.
  • FIG. 2 is a cross-sectional view illustrating an ultrasonic transducer according to a second embodiment.
  • FIG 3 is a cross-sectional view illustrating an ultrasonic transducer according to a third embodiment.
  • FIG. 4 is an exemplary view schematically showing an effect of improving spatial resolution of the ultrasonic transducers according to the first to third embodiments.
  • FIG. 5 is a flowchart illustrating a method of using an ultrasonic transducer according to a second embodiment or a third embodiment.
  • FIG. 6 is a flowchart illustrating a modification of a method of using the ultrasonic transducer illustrated in FIG. 5.
  • the ultrasonic transducer 100 includes a housing 110; A first vibrator element assembly 121 disposed in the housing 110 to transmit ultrasonic waves to a subject and receive an echo signal; A second vibrator element assembly 122 disposed in the housing 110 and separated from the first vibrator element assembly 121 to transmit ultrasonic waves to a subject and receive an echo signal; And an angle adjusting mechanism 130 for adjusting an angle between the first vibrator element assembly 121 and the second vibrator element assembly 122.
  • the first vibrator element assembly 121 and the second vibrator element assembly 122 transmit ultrasonic waves to a subject, receive an echo signal, and convert the ultrasonic signal into an electrical signal.
  • the first vibrator element assembly 121 and the second vibrator element assembly 122 are oscillator element assemblies having homogeneous or heterogeneous characteristics, and the front end surfaces thereof may be flat or curved surfaces.
  • the angle adjusting mechanism 130 that can adjust the angle between the first vibrator element assembly 121 and the second vibrator element assembly 122 in the ultrasonic transducer 100, In the description of the present embodiment, the angle adjusting mechanism 130 will be mainly described.
  • the angle adjustment mechanism 130 is installed on the housing 110 so as to rotate at the center of curvature of the angle scale 131 marked on one side of the housing 110, and the angle scale 131, and has an indication scale 132.
  • An angle adjusting piece 133 fixed to at least one of the first vibrator element assembly 121 or the second vibrator element assembly 122, and a fixture for fixing the angle adjusting piece 133 to a predetermined angle (not shown). ).
  • the fastener may be used in various forms, for example, located on the opposite side of the angle adjusting piece 133 with respect to the housing 110, embedded in the angle adjusting piece 133 and installed through the housing 110. It may be made of a fixing nut fastened to the bolt. In addition, between the angle adjusting piece 133 and the fixing nut, a rotary gear coupled to the reference gear fixed to the interior of the housing 110 may be additionally installed.
  • the fixture consists of a pin member or a ball member that is elastically movable in the angle adjusting piece 133, at least a part of the fixture is inserted into the hole or groove formed to correspond to the angle scale 131 in the housing 110
  • the angle adjusting piece 133 may be fixed at a predetermined angle.
  • the fastener may be configured in various forms, the present embodiment is not particularly limited. However, if only the angle between the first vibrator element assembly 121 and the second vibrator element assembly 122 can be fixed during the scan using the ultrasonic transducer 100, it may be found that any type may be used. Put it.
  • the angle adjusting mechanism 130 is mounted in pairs on both sides of the housing 110, but is not limited thereto.
  • the first vibrator element assembly 121 is fixedly installed in the housing 110 without an angle adjusting mechanism on the side of the first vibrator element assembly 121, and the angle adjusting mechanism (only on the side of the second vibrator element assembly 122) 130 may be provided.
  • the angle adjusting mechanism 130 may be installed on one or more vibrator element assemblies. .
  • the gain of the spatial resolution higher than the conventional one can be obtained by using the averaging algorithm in the overlapping region, Can be reduced.
  • 4 schematically illustrates the effect of improving the spatial resolution of the ultrasonic transducer according to the present embodiment, wherein the first image on the image plane obtained by the first vibrator element assembly 121 for the pin-shaped target, By averaging the second image on the image plane obtained by the two vibrator element assemblies 122, it is possible to finally provide a high-resolution pin-shaped image.
  • the first image obtained by the first vibrator element assembly 121 and the second image obtained by the second vibrator element assembly 122 may be distinguished and recognized.
  • An ultrasonic diagnostic system may be separately provided to each vibrator element assembly.
  • the memory is connected and stored, and the image stored in the first memory is recognized as the first image and the image stored in the second memory as the second image, or the odd-numbered image is first-numbered and even-numbered by using a sequence of each image frame.
  • the image of may be recognized as the second image.
  • a plurality of first images or a plurality of second images are mapped to manually input angle information of each vibrator element assembly used to acquire each image and stored in a memory (not shown).
  • a composite image is formed by spatially synthesizing the images stored in a memory.
  • a single composite image is formed by combining and averaging each image frame obtained in an independent direction (angle) for spatial synthesis. You can do it.
  • the ultrasonic transducer 200 includes a housing 210; A first vibrator element assembly 221 disposed in the housing 210 for transmitting an ultrasonic wave to a subject and receiving an echo signal; A second vibrator element assembly 222 disposed in the housing 210 and separated from the first vibrator element assembly 221 to transmit ultrasonic waves to a subject and receive an echo signal; And an angle adjusting mechanism 230 for adjusting an angle between the first vibrator element assembly 221 and the second vibrator element assembly 222.
  • the first vibrator element assembly 221 and the second vibrator element assembly 222 transmit ultrasonic waves to a subject, receive an echo signal, and convert the ultrasonic signal into an electrical signal.
  • the first vibrator element assembly 221 and the second vibrator element assembly 222 are oscillator element assemblies having the same or different characteristics.
  • At least one motor 231, the transmission means 233, 234, the rotation shaft 235, and the like are installed in the housing 210.
  • the angle adjusting mechanism 230 is a motor 231 mounted in the housing 210 and provided with a motor shaft 232, and installed in the housing 210 and being rotated by receiving rotational force from the motor shaft 232.
  • the first oscillator element assembly 221 or the second oscillator element assembly fixed to the transmission means 233, the second transmission means 234 engaged with the first transmission means 233, and the second transmission means 234.
  • a rotating shaft 235 fixed to at least one of 222.
  • the motor 231 may use a step motor which may rotate at a predetermined angle according to the input of the driving pulse, but is not necessarily limited thereto.
  • a transmission means for transmitting the rotational force output from the motor shaft 232 of the motor 231 to the rotating shaft 235 can be used a variety of devices such as friction wheels, gears, belts, chains, etc., because each device is well known
  • the present invention is not particularly limited.
  • a gear is preferable as a transmission means, and as a gear, a bevel gear or a worm and a worm gear may be employed as well as a spur gear. have.
  • the transmission means 233 in the ultrasonic transducer 200 When the motor 231 is operated according to the control command received through the signal line 251 extending from the control unit in the main body (not shown) of the ultrasonic diagnostic system, the transmission means 233 in the ultrasonic transducer 200.
  • the rotational force of the motor 231 is transmitted to the rotation shaft 235 through 234.
  • Reference numeral 252 is a power line for applying power to the motor 231.
  • the first vibrator element assembly 221 and the second vibrator element assembly 222 form a predetermined angle to provide clear ultrasonic image data. This has the advantage of being convenient and easy to obtain.
  • the housing 210 or on each of the vibrator element assemblies 221 and 222 may be provided with a sensor 240 that can determine whether the ultrasonic transducer 200 is in an initial state, such a sensor 240 is an infrared sensor Alternatively, an optical sensor such as a photocoupler, a distance sensor, a proximity sensor, a contact sensor, an angle sensor, or the like may be applied.
  • the initial state of the ultrasonic transducer 200 is determined whether the initial angle formed by the front end surface of each vibrator element assembly is horizontal, that is, zero (Zero). Alternatively, it may be determined whether the angle between the vibrator element assemblies is 180 degrees.
  • the angle adjusting mechanism 230 is mounted in pairs on both sides of the housing 210, but is not limited thereto.
  • the first vibrator element assembly 221 is fixedly installed in the housing 210 without the angle adjusting mechanism on the side of the first vibrator element assembly 221, and the angle adjusting mechanism only on the side of the second vibrator element assembly 222.
  • 230 may be provided.
  • the angle adjusting mechanism 230 may be installed in one or more vibrator element assemblies. .
  • the ultrasonic transducer 300 includes a housing 210; A first vibrator element assembly 321 having a curved shape disposed in the housing 210 to transmit ultrasonic waves to a subject and receive an echo signal; A second vibrator element assembly 322 having a curved shape disposed in the housing 210 and separated from the first vibrator element assembly 321 to transmit ultrasonic waves to a subject and receive an echo signal; And an angle adjusting mechanism 230 for adjusting an angle between the first vibrator element assembly 321 and the second vibrator element assembly 322.
  • the remaining components are the same as those of the above-described second embodiment. same.
  • the same components as the ultrasonic transducer 200 according to the second embodiment will be denoted by the same reference numerals and the detailed description of the configuration and function will be given. It will be omitted.
  • the first vibrator element assembly 321 and the second vibrator element assembly 322 are used, it is advantageous to obtain an image of a curved or curved portion of the subject.
  • the first vibrator element assembly 321 and the second vibrator element assembly 322 are curved when scanning the lower extremity veins of the human body or when scanning the synovial sac of the shoulder.
  • the tip surface may adhere to most of the subjects. Accordingly, there is an effect that the image acquisition is convenient and the clear image quality of the high resolution is obtained.
  • FIG. 5 is a flowchart illustrating a method of using an ultrasonic transducer according to a second embodiment or a third embodiment.
  • a process of confirming an initial state of the ultrasonic transducer (S520) may be provided. Determining whether the initial angle is zero (S530); setting the angle of at least one of the vibrator element aggregates when the initial angle of all the vibrator element aggregates is 0 (S540), and setting the angle of the vibrator element aggregate.
  • Process (S550) transmitting an ultrasonic wave from each vibrator element assembly to the subject, receiving an echo signal, and obtaining an image (S560), and if the initial angle is not 0, the initial angle of the vibrator element assemblies is zero.
  • a process of converting to a state is included (S570).
  • the sensor 240 may be determined in the housing 210 or on the vibrator element assemblies 221 and 222.
  • the angle of the vibrator element aggregates may be recognized as zero.
  • the user may input an appropriate setting angle to the scan area in the ultrasound diagnosis system.
  • the motor 231 is operated according to a control command received from the controller of the ultrasonic diagnostic system, that is, the set angle, and in turn, the ultrasonic transducers 200 and 300.
  • the rotational force of the motor 231 is transmitted to the rotation shaft 235 through the transmission means 233, 234 within the first oscillator element assembly 221, 321 or the second connected integrally with the rotation shaft 235.
  • At least one of the vibrator element assemblies 222 and 322 may be rotated about the housing 210 about the rotation axis 235 to adjust an angle between both vibrator element assemblies.
  • step (S550) of moving the vibrator element assembly at a set angle is not limited to the above-described embodiment, but through the angle adjusting piece 133 provided in the ultrasonic transducer 100 according to the first embodiment. At least one of the vibrator element assemblies 121 and 122 may be manually rotated by a predetermined angle.
  • the first image obtained by the first vibrator element assemblies 221 and 321 and the second image obtained by the second vibrator element assemblies 222 and 322 may be distinguished and recognized, and the ultrasound diagnosis system may recognize each vibrator element.
  • a separate memory is connected to the aggregate and stored, and the image stored in the first memory is recognized as the second image or the image stored in the second memory, or the odd numbered image is first displayed using a sequence of each image frame. The image and the even numbered image may be recognized as the second image.
  • a plurality of first images or a plurality of second images are mapped to set angle information of each vibrator element assembly used to acquire each image and stored in a memory (not shown).
  • a composite image is formed by spatially synthesizing the images stored in the memory. The spatial combinations combine and average each image frame obtained in an independent direction (angle) as shown in FIG. 4. By doing so, one composite image can be formed.
  • the step (S570) of converting the vibrator element assemblies to an initial state such that the angles of the vibrator element assemblies are set to 0 is a case where the set angle is 0 in the process of moving the corresponding vibrator element assembly to the set angle.
  • Both the first vibrator element assemblies 221 and 321 and the second vibrator element assemblies 222 and 322 are rotated to the initial angle position.
  • the vibrator The device assemblies may also include the step of automatically setting each initial angle to zero.
  • a process of checking a corresponding angle according to the area to be scanned by registering a patient in the ultrasound diagnosis system may be additionally included (S510).
  • FIG. 6 is a flowchart illustrating a modification of the method of using the ultrasonic transducer illustrated in FIG. 5.
  • a process of confirming an initial state of the ultrasonic transducer (S520) may be performed. Determining whether the angle is 0 (S530), if the initial angle of all the vibrator element assemblies is 0 (S540) to set the angle of at least one of the vibrator element assemblies (S540), the process of moving the vibrator element assembly to a set angle ( S550), the process of transmitting an ultrasonic wave from each vibrator element assembly to the subject and receiving an echo signal to obtain an image (S560); The process (S570) is included.
  • the angle set in the step of setting a change value of the desired angle for at least one of the vibrator element assemblies by selecting the angle change mode (S610), the angle set in the step (S540) of the change value of the vibrator element assembly set Checking whether it is larger or smaller (S620), if the change value is large, moving the vibrator element assembly at an angle increased by the difference between the change value and the set angle (S630). And a step (S640) of moving at an angle reduced by a difference between the set angles, and a step (S650) of transmitting ultrasonic waves from each vibrator element assembly to receive an echo signal and receiving an echo signal.
  • the process of storing the set angle or the final angle may be included.
  • the initial state of the vibrator element assemblies is zero if the initial angles of all the vibrator element assemblies are not zero. There may be inconveniences that need to be converted to.
  • an angle change mode is added to sequentially set a desired angle change value and the change value is already set. After comparing with the angle, the oscillator element assembly is characterized by moving the angle of the change value by the difference.
  • the motor 231 is operated by the control command received from the control unit of the ultrasonic diagnostic system, that is, the difference between the reset value and the preset angle, and in turn the ultrasonic transformer.
  • the first oscillator element assembly 221 integrally connected with the rotation shaft 235 while the rotational force of the motor 231 is transmitted to the rotation shaft 235 through the transmission means 233, 234 in the producers 200, 300.
  • At least one of the second vibrator element assemblies 222 and 322 may be rotated about the housing 210 about the rotation axis 235 without having to return to the initial angle. You can modify the angle. Accordingly, the time required for resetting and correcting the angles of the vibrator element assemblies may be reduced, thereby improving the speed of operation and user convenience.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Gynecology & Obstetrics (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Le présent mode de réalisation concerne un transducteur à ultrasons, comprenant : un logement ; un premier ensemble élément oscillateur disposé dans le logement pour transmettre les ondes ultrasonores à un sujet en cours d'examen et recevoir des signaux d'écho ; un second ensemble élément oscillateur disposé dans le logement et séparé du premier ensemble élément oscillateur pour transmettre les ondes ultrasonores à un sujet en cours d'examen et recevoir des signaux d'écho ; et un organe de commande d'angle pour contrôler l'angle entre le premier ensemble élément oscillateur et le second ensemble élément oscillateur, les granularités pouvant être réduites et la résolution spatiale pouvant être améliorée, fournissant ainsi une grande qualité de résolution d'image.
PCT/KR2013/002369 2013-03-21 2013-03-21 Transducteur à ultrasons WO2014148659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20130030547A KR20140115678A (ko) 2013-03-21 2013-03-21 초음파 트랜스듀서
KR10-2013-0030547 2013-03-21

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WO2014148659A1 true WO2014148659A1 (fr) 2014-09-25

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PCT/KR2013/002369 WO2014148659A1 (fr) 2013-03-21 2013-03-21 Transducteur à ultrasons

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109725062A (zh) * 2017-10-27 2019-05-07 奥林巴斯科技美国公司 具有可变顶角的双超声探针

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07299067A (ja) * 1994-05-10 1995-11-14 Aloka Co Ltd 超音波診断装置
JP2004167092A (ja) * 2002-11-21 2004-06-17 Aloka Co Ltd 超音波診断装置
JP2005087637A (ja) * 2003-09-19 2005-04-07 Matsushita Electric Ind Co Ltd 超音波診断装置
JP2008278932A (ja) * 2007-05-08 2008-11-20 Aloka Co Ltd 超音波プローブおよび超音波診断装置
JP2009082583A (ja) * 2007-10-02 2009-04-23 Aloka Co Ltd 超音波探触子

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07299067A (ja) * 1994-05-10 1995-11-14 Aloka Co Ltd 超音波診断装置
JP2004167092A (ja) * 2002-11-21 2004-06-17 Aloka Co Ltd 超音波診断装置
JP2005087637A (ja) * 2003-09-19 2005-04-07 Matsushita Electric Ind Co Ltd 超音波診断装置
JP2008278932A (ja) * 2007-05-08 2008-11-20 Aloka Co Ltd 超音波プローブおよび超音波診断装置
JP2009082583A (ja) * 2007-10-02 2009-04-23 Aloka Co Ltd 超音波探触子

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109725062A (zh) * 2017-10-27 2019-05-07 奥林巴斯科技美国公司 具有可变顶角的双超声探针
US11035829B2 (en) 2017-10-27 2021-06-15 Olympus America Inc. Dual ultrasonic probe with variable roof angle
CN109725062B (zh) * 2017-10-27 2022-07-08 奥林巴斯科技美国公司 具有可变顶角的双超声探针

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