JP7178156B2 - 圧電トランシーバーを有する画像処理装置 - Google Patents
圧電トランシーバーを有する画像処理装置 Download PDFInfo
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- 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
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- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- G—PHYSICS
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- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0292—Electrostatic transducers, e.g. electret-type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0603—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a piezoelectric bender, e.g. bimorph
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
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- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
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- B81B3/00—Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
- B81B3/0018—Structures acting upon the moving or flexible element for transforming energy into mechanical movement or vice versa, i.e. actuators, sensors, generators
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- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
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- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
- G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
- G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
- G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
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- G01S7/52079—Constructional features
- G01S7/5208—Constructional features with integration of processing functions inside probe or scanhead
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- H10N30/00—Piezoelectric or electrostrictive devices
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- H10N30/302—Sensors
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- A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
- A61B2562/125—Manufacturing methods specially adapted for producing sensors for in-vivo measurements characterised by the manufacture of electrodes
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Description
Claims (25)
- 第1の互い違いに配置された複数のマイクロマシン超音波トランスデューサ(MUT)を備えている、トランスデューサアレイであって、
ここで、第1の互い違いに配列された複数のMUTは、第1および第2の行を有する2次元アレイに配置され、第1の行のMUTは、水平方向へ水平ピッチによって等間隔に配置され、第2の行のMUTは、水平方向へ水平ピッチによって等間隔に配置され、
第2の行のMUTは、第1の行のMUTに対して水平方向に沿って第1の水平距離だけ推移され、第1の行のMUTに対して垂直方向に沿って第1の垂直距離だけ推移され、
前記第1の複数のMUTの各MUTは、幅である第2の方向に沿った寸法よりも大きな高さである第1の方向に沿った寸法を有し、前記第1の複数のMUTは対称的に配置された第2の複数のMUTよりも広い帯域幅を有し、前記第2の複数のMUTの各MUTは前記第1の方向と前記第2の方向に沿った同じ寸法を有し、
ここで、前記トランスデューサアレイは、第1の複数のMUTのみを含み、第2の複数のMUTを含まない、
トランスデューサアレイ。 - 水平方向への前記第1の複数のMUTの間の中心間距離が高さ方向への前記第1の複数のMUTの間の中心間距離と異なる、請求項1に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、前記第2の複数のMUTより小さい相互インピーダンスを有する、請求項1に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、前記第2の複数のMUTに比べて1つ以上の追加の振動モードを有する、請求項1に記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各MUTが、たわみモードの作動で1つ以上の振動モードをサポートする細長い形状を有する、請求項1に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、高さである第1の方向の軸に沿った細長い形状のMUTの群を備えており、そして、前記細長い形状のMUTの群は、幅である第2の方向に互いにオフセットされるMUTの同様の群と並べられている、請求項1から5のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々の上部電極が、長方形、楕円形、または円形の形状である、請求項1から5のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTによって生成されたビームのサイドローブ振幅が、前記第2の複数のMUTによって生成されたビームのサイドローブ振幅より小さい、請求項1から5のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの帯域幅が、前記第2の複数のMUTの帯域幅より広い、請求項1から5のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各MUTが、トランスデューサアレイの軸方向に対してランダムな角度によって回転される、請求項1から5のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々が、超音波の送信および超音波の受信のうち少なくとも1つを実行する、請求項1に記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々が、対称的な振動モードおよび非対称的な振動モードの少なくとも1つで作動する、請求項1に記載のトランスデューサアレイ。
- 互い違いに配置された第1の複数のマイクロマシン超音波トランスデューサ(MUT)を備えている、トランスデューサアレイであって、
ここで、第1の互い違いに配列された複数のMUTは、第1および第2の行を有する2次元アレイに配置され、第1の行のMUTは、水平方向へ水平ピッチによって等間隔に配置され、第2の行のMUTは、水平方向へ水平ピッチによって等間隔に配置され、
第2の行のMUTは、第1の行のMUTに対して水平方向に沿って第1の水平距離だけ推移され、第1の行のMUTに対して垂直方向に沿って第1の垂直距離だけ推移され、
第1の複数のMUTは、高さである第1の方向と幅である第2の方向に沿った同じ方向を有する対称的に配置された第2の複数のMUTよりも高い正規化された指向性を有し、ここで、前記トランスデューサアレイは、第1の複数のMUTのみを含み、第2の複数のMUTを含まない、
トランスデューサアレイ。 - MUTの高さである第1の方向がMUTの幅である第2の方向より大きい、請求項13に記載のトランスデューサアレイ。
- 水平方向への前記第1の複数のMUTの間の中心間距離が高さ方向への前記第1の複数のMUTの間の中心間距離と異なる、請求項13に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、前記第2の複数のMUTより小さい相互インピーダンスを有する、請求項13に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、前記第2の複数のMUTに比べて1つ以上の追加の振動モードを有する、請求項13に記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各MUTが、たわみモードの作動で1つ以上の振動モードをサポートする細長い形状を有する、請求項13に記載のトランスデューサアレイ。
- 前記第1の複数のMUTが、高さである第1の方向の軸に沿った細長い形状のMUTの群を備えており、そして、前記細長い形状のMUTの群は、幅である第2の方向に互いにオフセットされるMUTの同様の群と並べられている、請求項14から18のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々の上部電極が、長方形、楕円形、または円形の形状である、請求項14から18のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTによって生成されたビームのサイドローブ振幅が、前記第2の複数のMUTによって生成されたビームのサイドローブ振幅より小さい、請求項14から18のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの帯域幅が、前記第2の複数のMUTの帯域幅より広い、請求項14から18のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各MUTが、トランスデューサアレイの軸方向に対してランダムな角度によって回転される、請求項14から18のいずれか1つに記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々が、超音波の送信および超音波の受信のうち少なくとも1つを実行する、請求項13に記載のトランスデューサアレイ。
- 前記第1の複数のMUTの各々が、対称的な振動モードおよび非対称的な振動モードの少なくとも1つで作動する、請求項13に記載のトランスデューサアレイ。
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JP2021203505A JP7384448B2 (ja) | 2018-04-11 | 2021-12-15 | 圧電トランシーバーを有する画像処理装置 |
JP2023143351A JP2023166501A (ja) | 2018-04-11 | 2023-09-05 | 圧電トランシーバーを有する画像処理装置 |
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US15/951,118 | 2018-04-11 | ||
US15/951,118 US10656007B2 (en) | 2018-04-11 | 2018-04-11 | Asymmetrical ultrasound transducer array |
PCT/US2019/021515 WO2019199398A1 (en) | 2018-04-11 | 2019-03-10 | Imaging devices having piezoelectric transceivers |
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WO2011033887A1 (ja) | 2009-09-17 | 2011-03-24 | 株式会社日立メディコ | 超音波探触子及び超音波撮像装置 |
US20170209121A1 (en) | 2016-01-27 | 2017-07-27 | Henry A. DAVIS, SR. | Ultrasound imaging with sparse array probes |
US10656007B2 (en) | 2018-04-11 | 2020-05-19 | Exo Imaging Inc. | Asymmetrical ultrasound transducer array |
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